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Edit File : media.php \| Size : 215.12 KB
<?php /** * WordPress API for media display. * * @package WordPress * @subpackage Media / // Don't load directly. if ( ! defined( 'ABSPATH' ) ) { die( '-1' ); } /* * Retrieves additional image sizes. * * @since 4.7.0 * * @global array $_wp_additional_image_sizes * * @return array Additional images size data. / function wp_get_additional_image_sizes() { global $_wp_additional_image_sizes; if ( ! $_wp_additional_image_sizes ) { $_wp_additional_image_sizes = array(); } return $_wp_additional_image_sizes; } /* * Scales down the default size of an image. * * This is so that the image is a better fit for the editor and theme. * * The `$size` parameter accepts either an array or a string. The supported string * values are 'thumb' or 'thumbnail' for the given thumbnail size or defaults at * 128 width and 96 height in pixels. Also supported for the string value is * 'medium', 'medium_large' and 'full'. The 'full' isn't actually supported, but any value other * than the supported will result in the content_width size or 500 if that is * not set. * * Finally, there is a filter named {@see 'editor_max_image_size'}, that will be * called on the calculated array for width and height, respectively. * * @since 2.5.0 * * @global int $content_width * * @param int $width Width of the image in pixels. * @param int $height Height of the image in pixels. * @param string\|int[] $size Optional. Image size. Accepts any registered image size name, or an array * of width and height values in pixels (in that order). Default 'medium'. * @param string $context Optional. Could be 'display' (like in a theme) or 'edit' * (like inserting into an editor). Default null. * @return int[] { * An array of width and height values. * * @type int $0 The maximum width in pixels. * @type int $1 The maximum height in pixels. * } / function image_constrain_size_for_editor( $width, $height, $size = 'medium', $context = null ) { global $content_width; $_wp_additional_image_sizes = wp_get_additional_image_sizes(); if ( ! $context ) { $context = is_admin() ? 'edit' : 'display'; } if ( is_array( $size ) ) { $max_width = $size[0]; $max_height = $size[1]; } elseif ( 'thumb' === $size \|\| 'thumbnail' === $size ) { $max_width = (int) get_option( 'thumbnail_size_w' ); $max_height = (int) get_option( 'thumbnail_size_h' ); // Last chance thumbnail size defaults. if ( ! $max_width && ! $max_height ) { $max_width = 128; $max_height = 96; } } elseif ( 'medium' === $size ) { $max_width = (int) get_option( 'medium_size_w' ); $max_height = (int) get_option( 'medium_size_h' ); } elseif ( 'medium_large' === $size ) { $max_width = (int) get_option( 'medium_large_size_w' ); $max_height = (int) get_option( 'medium_large_size_h' ); if ( (int) $content_width > 0 ) { $max_width = min( (int) $content_width, $max_width ); } } elseif ( 'large' === $size ) { / * We're inserting a large size image into the editor. If it's a really * big image we'll scale it down to fit reasonably within the editor * itself, and within the theme's content width if it's known. The user * can resize it in the editor if they wish. / $max_width = (int) get_option( 'large_size_w' ); $max_height = (int) get_option( 'large_size_h' ); if ( (int) $content_width > 0 ) { $max_width = min( (int) $content_width, $max_width ); } } elseif ( ! empty( $_wp_additional_image_sizes ) && in_array( $size, array_keys( $_wp_additional_image_sizes ), true ) ) { $max_width = (int) $_wp_additional_image_sizes[ $size ]['width']; $max_height = (int) $_wp_additional_image_sizes[ $size ]['height']; // Only in admin. Assume that theme authors know what they're doing. if ( (int) $content_width > 0 && 'edit' === $context ) { $max_width = min( (int) $content_width, $max_width ); } } else { // $size === 'full' has no constraint. $max_width = $width; $max_height = $height; } /* * Filters the maximum image size dimensions for the editor. * * @since 2.5.0 * * @param int[] $max_image_size { * An array of width and height values. * * @type int $0 The maximum width in pixels. * @type int $1 The maximum height in pixels. * } * @param string\|int[] $size Requested image size. Can be any registered image size name, or * an array of width and height values in pixels (in that order). * @param string $context The context the image is being resized for. * Possible values are 'display' (like in a theme) * or 'edit' (like inserting into an editor). / list( $max_width, $max_height ) = apply_filters( 'editor_max_image_size', array( $max_width, $max_height ), $size, $context ); return wp_constrain_dimensions( $width, $height, $max_width, $max_height ); } /* * Retrieves width and height attributes using given width and height values. * * Both attributes are required in the sense that both parameters must have a * value, but are optional in that if you set them to false or null, then they * will not be added to the returned string. * * You can set the value using a string, but it will only take numeric values. * If you wish to put 'px' after the numbers, then it will be stripped out of * the return. * * @since 2.5.0 * * @param int\|string $width Image width in pixels. * @param int\|string $height Image height in pixels. * @return string HTML attributes for width and, or height. / function image_hwstring( $width, $height ) { $out = ''; if ( $width ) { $out .= 'width="' . (int) $width . '" '; } if ( $height ) { $out .= 'height="' . (int) $height . '" '; } return $out; } /* * Scales an image to fit a particular size (such as 'thumb' or 'medium'). * * The URL might be the original image, or it might be a resized version. This * function won't create a new resized copy, it will just return an already * resized one if it exists. * * A plugin may use the {@see 'image_downsize'} filter to hook into and offer image * resizing services for images. The hook must return an array with the same * elements that are normally returned from the function. * * @since 2.5.0 * * @param int $id Attachment ID for image. * @param string\|int[] $size Optional. Image size. Accepts any registered image size name, or an array * of width and height values in pixels (in that order). Default 'medium'. * @return array\|false { * Array of image data, or boolean false if no image is available. * * @type string $0 Image source URL. * @type int $1 Image width in pixels. * @type int $2 Image height in pixels. * @type bool $3 Whether the image is a resized image. * } / function image_downsize( $id, $size = 'medium' ) { $is_image = wp_attachment_is_image( $id ); /* * Filters whether to preempt the output of image_downsize(). * * Returning a truthy value from the filter will effectively short-circuit * down-sizing the image, returning that value instead. * * @since 2.5.0 * * @param bool\|array $downsize Whether to short-circuit the image downsize. * @param int $id Attachment ID for image. * @param string\|int[] $size Requested image size. Can be any registered image size name, or * an array of width and height values in pixels (in that order). / $out = apply_filters( 'image_downsize', false, $id, $size ); if ( $out ) { return $out; } $img_url = wp_get_attachment_url( $id ); $meta = wp_get_attachment_metadata( $id ); $width = 0; $height = 0; $is_intermediate = false; $img_url_basename = wp_basename( $img_url ); / * If the file isn't an image, attempt to replace its URL with a rendered image from its meta. * Otherwise, a non-image type could be returned. / if ( ! $is_image ) { if ( ! empty( $meta['sizes']['full'] ) ) { $img_url = str_replace( $img_url_basename, $meta['sizes']['full']['file'], $img_url ); $img_url_basename = $meta['sizes']['full']['file']; $width = $meta['sizes']['full']['width']; $height = $meta['sizes']['full']['height']; } else { return false; } } // Try for a new style intermediate size. $intermediate = image_get_intermediate_size( $id, $size ); if ( $intermediate ) { $img_url = str_replace( $img_url_basename, $intermediate['file'], $img_url ); $width = $intermediate['width']; $height = $intermediate['height']; $is_intermediate = true; } elseif ( 'thumbnail' === $size && ! empty( $meta['thumb'] ) && is_string( $meta['thumb'] ) ) { // Fall back to the old thumbnail. $imagefile = get_attached_file( $id ); $thumbfile = str_replace( wp_basename( $imagefile ), wp_basename( $meta['thumb'] ), $imagefile ); if ( file_exists( $thumbfile ) ) { $info = wp_getimagesize( $thumbfile ); if ( $info ) { $img_url = str_replace( $img_url_basename, wp_basename( $thumbfile ), $img_url ); $width = $info[0]; $height = $info[1]; $is_intermediate = true; } } } if ( ! $width && ! $height && isset( $meta['width'], $meta['height'] ) ) { // Any other type: use the real image. $width = $meta['width']; $height = $meta['height']; } if ( $img_url ) { // We have the actual image size, but might need to further constrain it if content_width is narrower. list( $width, $height ) = image_constrain_size_for_editor( $width, $height, $size ); return array( $img_url, $width, $height, $is_intermediate ); } return false; } /* * Registers a new image size. * * @since 2.9.0 * * @global array $_wp_additional_image_sizes Associative array of additional image sizes. * * @param string $name Image size identifier. * @param int $width Optional. Image width in pixels. Default 0. * @param int $height Optional. Image height in pixels. Default 0. * @param bool\|array $crop { * Optional. Image cropping behavior. If false, the image will be scaled (default). * If true, image will be cropped to the specified dimensions using center positions. * If an array, the image will be cropped using the array to specify the crop location: * * @type string $0 The x crop position. Accepts 'left', 'center', or 'right'. * @type string $1 The y crop position. Accepts 'top', 'center', or 'bottom'. * } / function add_image_size( $name, $width = 0, $height = 0, $crop = false ) { global $_wp_additional_image_sizes; $_wp_additional_image_sizes[ $name ] = array( 'width' => absint( $width ), 'height' => absint( $height ), 'crop' => $crop, ); } /* * Checks if an image size exists. * * @since 3.9.0 * * @param string $name The image size to check. * @return bool True if the image size exists, false if not. / function has_image_size( $name ) { $sizes = wp_get_additional_image_sizes(); return isset( $sizes[ $name ] ); } /* * Removes a new image size. * * @since 3.9.0 * * @global array $_wp_additional_image_sizes * * @param string $name The image size to remove. * @return bool True if the image size was successfully removed, false on failure. / function remove_image_size( $name ) { global $_wp_additional_image_sizes; if ( isset( $_wp_additional_image_sizes[ $name ] ) ) { unset( $_wp_additional_image_sizes[ $name ] ); return true; } return false; } /* * Registers an image size for the post thumbnail. * * @since 2.9.0 * * @see add_image_size() for details on cropping behavior. * * @param int $width Image width in pixels. * @param int $height Image height in pixels. * @param bool\|array $crop { * Optional. Image cropping behavior. If false, the image will be scaled (default). * If true, image will be cropped to the specified dimensions using center positions. * If an array, the image will be cropped using the array to specify the crop location: * * @type string $0 The x crop position. Accepts 'left', 'center', or 'right'. * @type string $1 The y crop position. Accepts 'top', 'center', or 'bottom'. * } / function set_post_thumbnail_size( $width = 0, $height = 0, $crop = false ) { add_image_size( 'post-thumbnail', $width, $height, $crop ); } /* * Gets an img tag for an image attachment, scaling it down if requested. * * The {@see 'get_image_tag_class'} filter allows for changing the class name for the * image without having to use regular expressions on the HTML content. The * parameters are: what WordPress will use for the class, the Attachment ID, * image align value, and the size the image should be. * * The second filter, {@see 'get_image_tag'}, has the HTML content, which can then be * further manipulated by a plugin to change all attribute values and even HTML * content. * * @since 2.5.0 * * @param int $id Attachment ID. * @param string $alt Image description for the alt attribute. * @param string $title Image description for the title attribute. * @param string $align Part of the class name for aligning the image. * @param string\|int[] $size Optional. Image size. Accepts any registered image size name, or an array of * width and height values in pixels (in that order). Default 'medium'. * @return string HTML IMG element for given image attachment. / function get_image_tag( $id, $alt, $title, $align, $size = 'medium' ) { list( $img_src, $width, $height ) = image_downsize( $id, $size ); $hwstring = image_hwstring( $width, $height ); $title = $title ? 'title="' . esc_attr( $title ) . '" ' : ''; $size_class = is_array( $size ) ? implode( 'x', $size ) : $size; $class = 'align' . esc_attr( $align ) . ' size-' . esc_attr( $size_class ) . ' wp-image-' . $id; /* * Filters the value of the attachment's image tag class attribute. * * @since 2.6.0 * * @param string $class CSS class name or space-separated list of classes. * @param int $id Attachment ID. * @param string $align Part of the class name for aligning the image. * @param string\|int[] $size Requested image size. Can be any registered image size name, or * an array of width and height values in pixels (in that order). / $class = apply_filters( 'get_image_tag_class', $class, $id, $align, $size ); $html = '<img src="' . esc_url( $img_src ) . '" alt="' . esc_attr( $alt ) . '" ' . $title . $hwstring . 'class="' . $class . '" />'; /* * Filters the HTML content for the image tag. * * @since 2.6.0 * * @param string $html HTML content for the image. * @param int $id Attachment ID. * @param string $alt Image description for the alt attribute. * @param string $title Image description for the title attribute. * @param string $align Part of the class name for aligning the image. * @param string\|int[] $size Requested image size. Can be any registered image size name, or * an array of width and height values in pixels (in that order). / return apply_filters( 'get_image_tag', $html, $id, $alt, $title, $align, $size ); } /* * Calculates the new dimensions for a down-sampled image. * * If either width or height are empty, no constraint is applied on * that dimension. * * @since 2.5.0 * * @param int $current_width Current width of the image. * @param int $current_height Current height of the image. * @param int $max_width Optional. Max width in pixels to constrain to. Default 0. * @param int $max_height Optional. Max height in pixels to constrain to. Default 0. * @return int[] { * An array of width and height values. * * @type int $0 The width in pixels. * @type int $1 The height in pixels. * } / function wp_constrain_dimensions( $current_width, $current_height, $max_width = 0, $max_height = 0 ) { if ( ! $max_width && ! $max_height ) { return array( $current_width, $current_height ); } $width_ratio = 1.0; $height_ratio = 1.0; $did_width = false; $did_height = false; if ( $max_width > 0 && $current_width > 0 && $current_width > $max_width ) { $width_ratio = $max_width / $current_width; $did_width = true; } if ( $max_height > 0 && $current_height > 0 && $current_height > $max_height ) { $height_ratio = $max_height / $current_height; $did_height = true; } // Calculate the larger/smaller ratios. $smaller_ratio = min( $width_ratio, $height_ratio ); $larger_ratio = max( $width_ratio, $height_ratio ); if ( (int) round( $current_width $larger_ratio ) > $max_width \|\| (int) round( $current_height * $larger_ratio ) > $max_height ) { // The larger ratio is too big. It would result in an overflow. $ratio = $smaller_ratio; } else { // The larger ratio fits, and is likely to be a more "snug" fit. $ratio = $larger_ratio; } // Very small dimensions may result in 0, 1 should be the minimum. $w = max( 1, (int) round( $current_width * $ratio ) ); $h = max( 1, (int) round( $current_height * $ratio ) ); /* * Sometimes, due to rounding, we'll end up with a result like this: * 465x700 in a 177x177 box is 117x176... a pixel short. * We also have issues with recursive calls resulting in an ever-changing result. * Constraining to the result of a constraint should yield the original result. * Thus we look for dimensions that are one pixel shy of the max value and bump them up. / // Note: $did_width means it is possible $smaller_ratio == $width_ratio. if ( $did_width && $w === $max_width - 1 ) { $w = $max_width; // Round it up. } // Note: $did_height means it is possible $smaller_ratio == $height_ratio. if ( $did_height && $h === $max_height - 1 ) { $h = $max_height; // Round it up. } /* * Filters dimensions to constrain down-sampled images to. * * @since 4.1.0 * * @param int[] $dimensions { * An array of width and height values. * * @type int $0 The width in pixels. * @type int $1 The height in pixels. * } * @param int $current_width The current width of the image. * @param int $current_height The current height of the image. * @param int $max_width The maximum width permitted. * @param int $max_height The maximum height permitted. / return apply_filters( 'wp_constrain_dimensions', array( $w, $h ), $current_width, $current_height, $max_width, $max_height ); } /* * Retrieves calculated resize dimensions for use in WP_Image_Editor. * * Calculates dimensions and coordinates for a resized image that fits * within a specified width and height. * * @since 2.5.0 * * @param int $orig_w Original width in pixels. * @param int $orig_h Original height in pixels. * @param int $dest_w New width in pixels. * @param int $dest_h New height in pixels. * @param bool\|array $crop { * Optional. Image cropping behavior. If false, the image will be scaled (default). * If true, image will be cropped to the specified dimensions using center positions. * If an array, the image will be cropped using the array to specify the crop location: * * @type string $0 The x crop position. Accepts 'left', 'center', or 'right'. * @type string $1 The y crop position. Accepts 'top', 'center', or 'bottom'. * } * @return array\|false Returned array matches parameters for `imagecopyresampled()`. False on failure. / function image_resize_dimensions( $orig_w, $orig_h, $dest_w, $dest_h, $crop = false ) { if ( $orig_w <= 0 \|\| $orig_h <= 0 ) { return false; } // At least one of $dest_w or $dest_h must be specific. if ( $dest_w <= 0 && $dest_h <= 0 ) { return false; } /* * Filters whether to preempt calculating the image resize dimensions. * * Returning a non-null value from the filter will effectively short-circuit * image_resize_dimensions(), returning that value instead. * * @since 3.4.0 * * @param null\|mixed $null Whether to preempt output of the resize dimensions. * @param int $orig_w Original width in pixels. * @param int $orig_h Original height in pixels. * @param int $dest_w New width in pixels. * @param int $dest_h New height in pixels. * @param bool\|array $crop Whether to crop image to specified width and height or resize. * An array can specify positioning of the crop area. Default false. / $output = apply_filters( 'image_resize_dimensions', null, $orig_w, $orig_h, $dest_w, $dest_h, $crop ); if ( null !== $output ) { return $output; } // Stop if the destination size is larger than the original image dimensions. if ( empty( $dest_h ) ) { if ( $orig_w < $dest_w ) { return false; } } elseif ( empty( $dest_w ) ) { if ( $orig_h < $dest_h ) { return false; } } else { if ( $orig_w < $dest_w && $orig_h < $dest_h ) { return false; } } if ( $crop ) { / * Crop the largest possible portion of the original image that we can size to $dest_w x $dest_h. * Note that the requested crop dimensions are used as a maximum bounding box for the original image. * If the original image's width or height is less than the requested width or height * only the greater one will be cropped. * For example when the original image is 600x300, and the requested crop dimensions are 400x400, * the resulting image will be 400x300. / $aspect_ratio = $orig_w / $orig_h; $new_w = min( $dest_w, $orig_w ); $new_h = min( $dest_h, $orig_h ); if ( ! $new_w ) { $new_w = (int) round( $new_h $aspect_ratio ); } if ( ! $new_h ) { $new_h = (int) round( $new_w / $aspect_ratio ); } $size_ratio = max( $new_w / $orig_w, $new_h / $orig_h ); $crop_w = round( $new_w / $size_ratio ); $crop_h = round( $new_h / $size_ratio ); if ( ! is_array( $crop ) \|\| count( $crop ) !== 2 ) { $crop = array( 'center', 'center' ); } list( $x, $y ) = $crop; if ( 'left' === $x ) { $s_x = 0; } elseif ( 'right' === $x ) { $s_x = $orig_w - $crop_w; } else { $s_x = floor( ( $orig_w - $crop_w ) / 2 ); } if ( 'top' === $y ) { $s_y = 0; } elseif ( 'bottom' === $y ) { $s_y = $orig_h - $crop_h; } else { $s_y = floor( ( $orig_h - $crop_h ) / 2 ); } } else { // Resize using $dest_w x $dest_h as a maximum bounding box. $crop_w = $orig_w; $crop_h = $orig_h; $s_x = 0; $s_y = 0; list( $new_w, $new_h ) = wp_constrain_dimensions( $orig_w, $orig_h, $dest_w, $dest_h ); } if ( wp_fuzzy_number_match( $new_w, $orig_w ) && wp_fuzzy_number_match( $new_h, $orig_h ) ) { // The new size has virtually the same dimensions as the original image. /** * Filters whether to proceed with making an image sub-size with identical dimensions * with the original/source image. Differences of 1px may be due to rounding and are ignored. * * @since 5.3.0 * * @param bool $proceed The filtered value. * @param int $orig_w Original image width. * @param int $orig_h Original image height. / $proceed = (bool) apply_filters( 'wp_image_resize_identical_dimensions', false, $orig_w, $orig_h ); if ( ! $proceed ) { return false; } } / * The return array matches the parameters to imagecopyresampled(). * int dst_x, int dst_y, int src_x, int src_y, int dst_w, int dst_h, int src_w, int src_h / return array( 0, 0, (int) $s_x, (int) $s_y, (int) $new_w, (int) $new_h, (int) $crop_w, (int) $crop_h ); } /* * Resizes an image to make a thumbnail or intermediate size. * * The returned array has the file size, the image width, and image height. The * {@see 'image_make_intermediate_size'} filter can be used to hook in and change the * values of the returned array. The only parameter is the resized file path. * * @since 2.5.0 * * @param string $file File path. * @param int $width Image width. * @param int $height Image height. * @param bool\|array $crop { * Optional. Image cropping behavior. If false, the image will be scaled (default). * If true, image will be cropped to the specified dimensions using center positions. * If an array, the image will be cropped using the array to specify the crop location: * * @type string $0 The x crop position. Accepts 'left', 'center', or 'right'. * @type string $1 The y crop position. Accepts 'top', 'center', or 'bottom'. * } * @return array\|false Metadata array on success. False if no image was created. / function image_make_intermediate_size( $file, $width, $height, $crop = false ) { if ( $width \|\| $height ) { $editor = wp_get_image_editor( $file ); if ( is_wp_error( $editor ) \|\| is_wp_error( $editor->resize( $width, $height, $crop ) ) ) { return false; } $resized_file = $editor->save(); if ( ! is_wp_error( $resized_file ) && $resized_file ) { unset( $resized_file['path'] ); return $resized_file; } } return false; } /* * Helper function to test if aspect ratios for two images match. * * @since 4.6.0 * * @param int $source_width Width of the first image in pixels. * @param int $source_height Height of the first image in pixels. * @param int $target_width Width of the second image in pixels. * @param int $target_height Height of the second image in pixels. * @return bool True if aspect ratios match within 1px. False if not. / function wp_image_matches_ratio( $source_width, $source_height, $target_width, $target_height ) { / * To test for varying crops, we constrain the dimensions of the larger image * to the dimensions of the smaller image and see if they match. / if ( $source_width > $target_width ) { $constrained_size = wp_constrain_dimensions( $source_width, $source_height, $target_width ); $expected_size = array( $target_width, $target_height ); } else { $constrained_size = wp_constrain_dimensions( $target_width, $target_height, $source_width ); $expected_size = array( $source_width, $source_height ); } // If the image dimensions are within 1px of the expected size, we consider it a match. $matched = ( wp_fuzzy_number_match( $constrained_size[0], $expected_size[0] ) && wp_fuzzy_number_match( $constrained_size[1], $expected_size[1] ) ); return $matched; } /* * Retrieves the image's intermediate size (resized) path, width, and height. * * The $size parameter can be an array with the width and height respectively. * If the size matches the 'sizes' metadata array for width and height, then it * will be used. If there is no direct match, then the nearest image size larger * than the specified size will be used. If nothing is found, then the function * will break out and return false. * * The metadata 'sizes' is used for compatible sizes that can be used for the * parameter $size value. * * The url path will be given, when the $size parameter is a string. * * If you are passing an array for the $size, you should consider using * add_image_size() so that a cropped version is generated. It's much more * efficient than having to find the closest-sized image and then having the * browser scale down the image. * * @since 2.5.0 * * @param int $post_id Attachment ID. * @param string\|int[] $size Optional. Image size. Accepts any registered image size name, or an array * of width and height values in pixels (in that order). Default 'thumbnail'. * @return array\|false { * Array of file relative path, width, and height on success. Additionally includes absolute * path and URL if registered size is passed to `$size` parameter. False on failure. * * @type string $file Filename of image. * @type int $width Width of image in pixels. * @type int $height Height of image in pixels. * @type string $path Path of image relative to uploads directory. * @type string $url URL of image. * } / function image_get_intermediate_size( $post_id, $size = 'thumbnail' ) { $imagedata = wp_get_attachment_metadata( $post_id ); if ( ! $size \|\| ! is_array( $imagedata ) \|\| empty( $imagedata['sizes'] ) ) { return false; } $data = array(); // Find the best match when '$size' is an array. if ( is_array( $size ) ) { $candidates = array(); if ( ! isset( $imagedata['file'] ) && isset( $imagedata['sizes']['full'] ) ) { $imagedata['height'] = $imagedata['sizes']['full']['height']; $imagedata['width'] = $imagedata['sizes']['full']['width']; } foreach ( $imagedata['sizes'] as $_size => $data ) { // If there's an exact match to an existing image size, short circuit. if ( (int) $data['width'] === (int) $size[0] && (int) $data['height'] === (int) $size[1] ) { $candidates[ $data['width'] $data['height'] ] = $data; break; } // If it's not an exact match, consider larger sizes with the same aspect ratio. if ( $data['width'] >= $size[0] && $data['height'] >= $size[1] ) { // If '0' is passed to either size, we test ratios against the original file. if ( 0 === $size[0] \|\| 0 === $size[1] ) { $same_ratio = wp_image_matches_ratio( $data['width'], $data['height'], $imagedata['width'], $imagedata['height'] ); } else { $same_ratio = wp_image_matches_ratio( $data['width'], $data['height'], $size[0], $size[1] ); } if ( $same_ratio ) { $candidates[ $data['width'] * $data['height'] ] = $data; } } } if ( ! empty( $candidates ) ) { // Sort the array by size if we have more than one candidate. if ( 1 < count( $candidates ) ) { ksort( $candidates ); } $data = array_shift( $candidates ); /* * When the size requested is smaller than the thumbnail dimensions, we * fall back to the thumbnail size to maintain backward compatibility with * pre 4.6 versions of WordPress. / } elseif ( ! empty( $imagedata['sizes']['thumbnail'] ) && $imagedata['sizes']['thumbnail']['width'] >= $size[0] && $imagedata['sizes']['thumbnail']['width'] >= $size[1] ) { $data = $imagedata['sizes']['thumbnail']; } else { return false; } // Constrain the width and height attributes to the requested values. list( $data['width'], $data['height'] ) = image_constrain_size_for_editor( $data['width'], $data['height'], $size ); } elseif ( ! empty( $imagedata['sizes'][ $size ] ) ) { $data = $imagedata['sizes'][ $size ]; } // If we still don't have a match at this point, return false. if ( empty( $data ) ) { return false; } // Include the full filesystem path of the intermediate file. if ( empty( $data['path'] ) && ! empty( $data['file'] ) && ! empty( $imagedata['file'] ) ) { $file_url = wp_get_attachment_url( $post_id ); $data['path'] = path_join( dirname( $imagedata['file'] ), $data['file'] ); $data['url'] = path_join( dirname( $file_url ), $data['file'] ); } /* * Filters the output of image_get_intermediate_size() * * @since 4.4.0 * * @see image_get_intermediate_size() * * @param array $data Array of file relative path, width, and height on success. May also include * file absolute path and URL. * @param int $post_id The ID of the image attachment. * @param string\|int[] $size Requested image size. Can be any registered image size name, or * an array of width and height values in pixels (in that order). / return apply_filters( 'image_get_intermediate_size', $data, $post_id, $size ); } /* * Gets the available intermediate image size names. * * @since 3.0.0 * * @return string[] An array of image size names. / function get_intermediate_image_sizes() { $default_sizes = array( 'thumbnail', 'medium', 'medium_large', 'large' ); $additional_sizes = wp_get_additional_image_sizes(); if ( ! empty( $additional_sizes ) ) { $default_sizes = array_merge( $default_sizes, array_keys( $additional_sizes ) ); } /* * Filters the list of intermediate image sizes. * * @since 2.5.0 * * @param string[] $default_sizes An array of intermediate image size names. Defaults * are 'thumbnail', 'medium', 'medium_large', 'large'. / return apply_filters( 'intermediate_image_sizes', $default_sizes ); } /* * Returns a normalized list of all currently registered image sub-sizes. * * @since 5.3.0 * @uses wp_get_additional_image_sizes() * @uses get_intermediate_image_sizes() * * @return array[] Associative array of arrays of image sub-size information, * keyed by image size name. / function wp_get_registered_image_subsizes() { $additional_sizes = wp_get_additional_image_sizes(); $all_sizes = array(); foreach ( get_intermediate_image_sizes() as $size_name ) { $size_data = array( 'width' => 0, 'height' => 0, 'crop' => false, ); if ( isset( $additional_sizes[ $size_name ]['width'] ) ) { // For sizes added by plugins and themes. $size_data['width'] = (int) $additional_sizes[ $size_name ]['width']; } else { // For default sizes set in options. $size_data['width'] = (int) get_option( "{$size_name}_size_w" ); } if ( isset( $additional_sizes[ $size_name ]['height'] ) ) { $size_data['height'] = (int) $additional_sizes[ $size_name ]['height']; } else { $size_data['height'] = (int) get_option( "{$size_name}_size_h" ); } if ( empty( $size_data['width'] ) && empty( $size_data['height'] ) ) { // This size isn't set. continue; } if ( isset( $additional_sizes[ $size_name ]['crop'] ) ) { $size_data['crop'] = $additional_sizes[ $size_name ]['crop']; } else { $size_data['crop'] = get_option( "{$size_name}_crop" ); } if ( ! is_array( $size_data['crop'] ) \|\| empty( $size_data['crop'] ) ) { $size_data['crop'] = (bool) $size_data['crop']; } $all_sizes[ $size_name ] = $size_data; } return $all_sizes; } /* * Retrieves an image to represent an attachment. * * @since 2.5.0 * * @param int $attachment_id Image attachment ID. * @param string\|int[] $size Optional. Image size. Accepts any registered image size name, or an array of * width and height values in pixels (in that order). Default 'thumbnail'. * @param bool $icon Optional. Whether the image should fall back to a mime type icon. Default false. * @return array\|false { * Array of image data, or boolean false if no image is available. * * @type string $0 Image source URL. * @type int $1 Image width in pixels. * @type int $2 Image height in pixels. * @type bool $3 Whether the image is a resized image. * } / function wp_get_attachment_image_src( $attachment_id, $size = 'thumbnail', $icon = false ) { // Get a thumbnail or intermediate image if there is one. $image = image_downsize( $attachment_id, $size ); if ( ! $image ) { $src = false; if ( $icon ) { $src = wp_mime_type_icon( $attachment_id, '.svg' ); if ( $src ) { /* This filter is documented in wp-includes/post.php / $icon_dir = apply_filters( 'icon_dir', ABSPATH . WPINC . '/images/media' ); $src_file = $icon_dir . '/' . wp_basename( $src ); list( $width, $height ) = wp_getimagesize( $src_file ); $ext = strtolower( substr( $src_file, -4 ) ); if ( '.svg' === $ext ) { // SVG does not have true dimensions, so this assigns width and height directly. $width = 48; $height = 64; } else { list( $width, $height ) = wp_getimagesize( $src_file ); } } } if ( $src && $width && $height ) { $image = array( $src, $width, $height, false ); } } /* * Filters the attachment image source result. * * @since 4.3.0 * * @param array\|false $image { * Array of image data, or boolean false if no image is available. * * @type string $0 Image source URL. * @type int $1 Image width in pixels. * @type int $2 Image height in pixels. * @type bool $3 Whether the image is a resized image. * } * @param int $attachment_id Image attachment ID. * @param string\|int[] $size Requested image size. Can be any registered image size name, or * an array of width and height values in pixels (in that order). * @param bool $icon Whether the image should be treated as an icon. / return apply_filters( 'wp_get_attachment_image_src', $image, $attachment_id, $size, $icon ); } /* * Gets an HTML img element representing an image attachment. * * While `$size` will accept an array, it is better to register a size with * add_image_size() so that a cropped version is generated. It's much more * efficient than having to find the closest-sized image and then having the * browser scale down the image. * * @since 2.5.0 * @since 4.4.0 The `$srcset` and `$sizes` attributes were added. * @since 5.5.0 The `$loading` attribute was added. * @since 6.1.0 The `$decoding` attribute was added. * * @param int $attachment_id Image attachment ID. * @param string\|int[] $size Optional. Image size. Accepts any registered image size name, or an array * of width and height values in pixels (in that order). Default 'thumbnail'. * @param bool $icon Optional. Whether the image should be treated as an icon. Default false. * @param string\|array $attr { * Optional. Attributes for the image markup. * * @type string $src Image attachment URL. * @type string $class CSS class name or space-separated list of classes. * Default `attachment-$size_class size-$size_class`, * where `$size_class` is the image size being requested. * @type string $alt Image description for the alt attribute. * @type string $srcset The 'srcset' attribute value. * @type string $sizes The 'sizes' attribute value. * @type string\|false $loading The 'loading' attribute value. Passing a value of false * will result in the attribute being omitted for the image. * Default determined by {@see wp_get_loading_optimization_attributes()}. * @type string $decoding The 'decoding' attribute value. Possible values are * 'async' (default), 'sync', or 'auto'. Passing false or an empty * string will result in the attribute being omitted. * @type string $fetchpriority The 'fetchpriority' attribute value, whether `high`, `low`, or `auto`. * Default determined by {@see wp_get_loading_optimization_attributes()}. * } * @return string HTML img element or empty string on failure. / function wp_get_attachment_image( $attachment_id, $size = 'thumbnail', $icon = false, $attr = '' ) { $html = ''; $image = wp_get_attachment_image_src( $attachment_id, $size, $icon ); if ( $image ) { list( $src, $width, $height ) = $image; $attachment = get_post( $attachment_id ); $hwstring = image_hwstring( $width, $height ); $size_class = $size; if ( is_array( $size_class ) ) { $size_class = implode( 'x', $size_class ); } $default_attr = array( 'src' => $src, 'class' => "attachment-$size_class size-$size_class", 'alt' => trim( strip_tags( get_post_meta( $attachment_id, '_wp_attachment_image_alt', true ) ) ), ); /* * Filters the context in which wp_get_attachment_image() is used. * * @since 6.3.0 * * @param string $context The context. Default 'wp_get_attachment_image'. / $context = apply_filters( 'wp_get_attachment_image_context', 'wp_get_attachment_image' ); $attr = wp_parse_args( $attr, $default_attr ); $loading_attr = $attr; $loading_attr['width'] = $width; $loading_attr['height'] = $height; $loading_optimization_attr = wp_get_loading_optimization_attributes( 'img', $loading_attr, $context ); // Add loading optimization attributes if not available. $attr = array_merge( $attr, $loading_optimization_attr ); // Omit the `decoding` attribute if the value is invalid according to the spec. if ( empty( $attr['decoding'] ) \|\| ! in_array( $attr['decoding'], array( 'async', 'sync', 'auto' ), true ) ) { unset( $attr['decoding'] ); } / * If the default value of `lazy` for the `loading` attribute is overridden * to omit the attribute for this image, ensure it is not included. / if ( isset( $attr['loading'] ) && ! $attr['loading'] ) { unset( $attr['loading'] ); } // If the `fetchpriority` attribute is overridden and set to false or an empty string. if ( isset( $attr['fetchpriority'] ) && ! $attr['fetchpriority'] ) { unset( $attr['fetchpriority'] ); } // Generate 'srcset' and 'sizes' if not already present. if ( empty( $attr['srcset'] ) ) { $image_meta = wp_get_attachment_metadata( $attachment_id ); if ( is_array( $image_meta ) ) { $size_array = array( absint( $width ), absint( $height ) ); $srcset = wp_calculate_image_srcset( $size_array, $src, $image_meta, $attachment_id ); $sizes = wp_calculate_image_sizes( $size_array, $src, $image_meta, $attachment_id ); if ( $srcset && ( $sizes \|\| ! empty( $attr['sizes'] ) ) ) { $attr['srcset'] = $srcset; if ( empty( $attr['sizes'] ) ) { $attr['sizes'] = $sizes; } } } } /* This filter is documented in wp-includes/media.php / $add_auto_sizes = apply_filters( 'wp_img_tag_add_auto_sizes', true ); // Adds 'auto' to the sizes attribute if applicable. if ( $add_auto_sizes && isset( $attr['loading'] ) && 'lazy' === $attr['loading'] && isset( $attr['sizes'] ) && ! wp_sizes_attribute_includes_valid_auto( $attr['sizes'] ) ) { $attr['sizes'] = 'auto, ' . $attr['sizes']; } /* * Filters the list of attachment image attributes. * * @since 2.8.0 * * @param string[] $attr Array of attribute values for the image markup, keyed by attribute name. * See wp_get_attachment_image(). * @param WP_Post $attachment Image attachment post. * @param string\|int[] $size Requested image size. Can be any registered image size name, or * an array of width and height values in pixels (in that order). / $attr = apply_filters( 'wp_get_attachment_image_attributes', $attr, $attachment, $size ); $attr = array_map( 'esc_attr', $attr ); $html = rtrim( "<img $hwstring" ); foreach ( $attr as $name => $value ) { $html .= " $name=" . '"' . $value . '"'; } $html .= ' />'; } /* * Filters the HTML img element representing an image attachment. * * @since 5.6.0 * * @param string $html HTML img element or empty string on failure. * @param int $attachment_id Image attachment ID. * @param string\|int[] $size Requested image size. Can be any registered image size name, or * an array of width and height values in pixels (in that order). * @param bool $icon Whether the image should be treated as an icon. * @param string[] $attr Array of attribute values for the image markup, keyed by attribute name. * See wp_get_attachment_image(). / return apply_filters( 'wp_get_attachment_image', $html, $attachment_id, $size, $icon, $attr ); } /* * Gets the URL of an image attachment. * * @since 4.4.0 * * @param int $attachment_id Image attachment ID. * @param string\|int[] $size Optional. Image size. Accepts any registered image size name, or an array of * width and height values in pixels (in that order). Default 'thumbnail'. * @param bool $icon Optional. Whether the image should be treated as an icon. Default false. * @return string\|false Attachment URL or false if no image is available. If `$size` does not match * any registered image size, the original image URL will be returned. / function wp_get_attachment_image_url( $attachment_id, $size = 'thumbnail', $icon = false ) { $image = wp_get_attachment_image_src( $attachment_id, $size, $icon ); return isset( $image[0] ) ? $image[0] : false; } /* * Gets the attachment path relative to the upload directory. * * @since 4.4.1 * @access private * * @param string $file Attachment file name. * @return string Attachment path relative to the upload directory. / function _wp_get_attachment_relative_path( $file ) { $dirname = dirname( $file ); if ( '.' === $dirname ) { return ''; } if ( str_contains( $dirname, 'wp-content/uploads' ) ) { // Get the directory name relative to the upload directory (back compat for pre-2.7 uploads). $dirname = substr( $dirname, strpos( $dirname, 'wp-content/uploads' ) + 18 ); $dirname = ltrim( $dirname, '/' ); } return $dirname; } /* * Gets the image size as array from its meta data. * * Used for responsive images. * * @since 4.4.0 * @access private * * @param string $size_name Image size. Accepts any registered image size name. * @param array $image_meta The image meta data. * @return array\|false { * Array of width and height or false if the size isn't present in the meta data. * * @type int $0 Image width. * @type int $1 Image height. * } / function _wp_get_image_size_from_meta( $size_name, $image_meta ) { if ( 'full' === $size_name ) { return array( absint( $image_meta['width'] ), absint( $image_meta['height'] ), ); } elseif ( ! empty( $image_meta['sizes'][ $size_name ] ) ) { return array( absint( $image_meta['sizes'][ $size_name ]['width'] ), absint( $image_meta['sizes'][ $size_name ]['height'] ), ); } return false; } /* * Retrieves the value for an image attachment's 'srcset' attribute. * * @since 4.4.0 * * @see wp_calculate_image_srcset() * * @param int $attachment_id Image attachment ID. * @param string\|int[] $size Optional. Image size. Accepts any registered image size name, or an array of * width and height values in pixels (in that order). Default 'medium'. * @param array\|null $image_meta Optional. The image meta data as returned by 'wp_get_attachment_metadata()'. * Default null. * @return string\|false A 'srcset' value string or false. / function wp_get_attachment_image_srcset( $attachment_id, $size = 'medium', $image_meta = null ) { $image = wp_get_attachment_image_src( $attachment_id, $size ); if ( ! $image ) { return false; } if ( ! is_array( $image_meta ) ) { $image_meta = wp_get_attachment_metadata( $attachment_id ); } $image_src = $image[0]; $size_array = array( absint( $image[1] ), absint( $image[2] ), ); return wp_calculate_image_srcset( $size_array, $image_src, $image_meta, $attachment_id ); } /* * A helper function to calculate the image sources to include in a 'srcset' attribute. * * @since 4.4.0 * * @param int[] $size_array { * An array of width and height values. * * @type int $0 The width in pixels. * @type int $1 The height in pixels. * } * @param string $image_src The 'src' of the image. * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'. * @param int $attachment_id Optional. The image attachment ID. Default 0. * @return string\|false The 'srcset' attribute value. False on error or when only one source exists. / function wp_calculate_image_srcset( $size_array, $image_src, $image_meta, $attachment_id = 0 ) { /* * Pre-filters the image meta to be able to fix inconsistencies in the stored data. * * @since 4.5.0 * * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'. * @param int[] $size_array { * An array of requested width and height values. * * @type int $0 The width in pixels. * @type int $1 The height in pixels. * } * @param string $image_src The 'src' of the image. * @param int $attachment_id The image attachment ID or 0 if not supplied. / $image_meta = apply_filters( 'wp_calculate_image_srcset_meta', $image_meta, $size_array, $image_src, $attachment_id ); if ( empty( $image_meta['sizes'] ) \|\| ! isset( $image_meta['file'] ) \|\| strlen( $image_meta['file'] ) < 4 ) { return false; } $image_sizes = $image_meta['sizes']; // Get the width and height of the image. $image_width = (int) $size_array[0]; $image_height = (int) $size_array[1]; // Bail early if error/no width. if ( $image_width < 1 ) { return false; } $image_basename = wp_basename( $image_meta['file'] ); / * WordPress flattens animated GIFs into one frame when generating intermediate sizes. * To avoid hiding animation in user content, if src is a full size GIF, a srcset attribute is not generated. * If src is an intermediate size GIF, the full size is excluded from srcset to keep a flattened GIF from becoming animated. / if ( ! isset( $image_sizes['thumbnail']['mime-type'] ) \|\| 'image/gif' !== $image_sizes['thumbnail']['mime-type'] ) { $image_sizes[] = array( 'width' => $image_meta['width'], 'height' => $image_meta['height'], 'file' => $image_basename, ); } elseif ( str_contains( $image_src, $image_meta['file'] ) ) { return false; } // Retrieve the uploads sub-directory from the full size image. $dirname = _wp_get_attachment_relative_path( $image_meta['file'] ); if ( $dirname ) { $dirname = trailingslashit( $dirname ); } $upload_dir = wp_get_upload_dir(); $image_baseurl = trailingslashit( $upload_dir['baseurl'] ) . $dirname; / * If currently on HTTPS, prefer HTTPS URLs when we know they're supported by the domain * (which is to say, when they share the domain name of the current request). / if ( is_ssl() && ! str_starts_with( $image_baseurl, 'https' ) ) { / * Since the `Host:` header might contain a port, it should * be compared against the image URL using the same port. / $parsed = parse_url( $image_baseurl ); $domain = isset( $parsed['host'] ) ? $parsed['host'] : ''; if ( isset( $parsed['port'] ) ) { $domain .= ':' . $parsed['port']; } if ( $_SERVER['HTTP_HOST'] === $domain ) { $image_baseurl = set_url_scheme( $image_baseurl, 'https' ); } } / * Images that have been edited in WordPress after being uploaded will * contain a unique hash. Look for that hash and use it later to filter * out images that are leftovers from previous versions. / $image_edited = preg_match( '/-e[0-9]{13}/', wp_basename( $image_src ), $image_edit_hash ); /* * Filters the maximum image width to be included in a 'srcset' attribute. * * @since 4.4.0 * * @param int $max_width The maximum image width to be included in the 'srcset'. Default '2048'. * @param int[] $size_array { * An array of requested width and height values. * * @type int $0 The width in pixels. * @type int $1 The height in pixels. * } / $max_srcset_image_width = apply_filters( 'max_srcset_image_width', 2048, $size_array ); // Array to hold URL candidates. $sources = array(); /* * To make sure the ID matches our image src, we will check to see if any sizes in our attachment * meta match our $image_src. If no matches are found we don't return a srcset to avoid serving * an incorrect image. See #35045. / $src_matched = false; / * Loop through available images. Only use images that are resized * versions of the same edit. / foreach ( $image_sizes as $image ) { $is_src = false; // Check if image meta isn't corrupted. if ( ! is_array( $image ) ) { continue; } // If the file name is part of the `src`, we've confirmed a match. if ( ! $src_matched && str_contains( $image_src, $dirname . $image['file'] ) ) { $src_matched = true; $is_src = true; } // Filter out images that are from previous edits. if ( $image_edited && ! strpos( $image['file'], $image_edit_hash[0] ) ) { continue; } / * Filters out images that are wider than '$max_srcset_image_width' unless * that file is in the 'src' attribute. / if ( $max_srcset_image_width && $image['width'] > $max_srcset_image_width && ! $is_src ) { continue; } // If the image dimensions are within 1px of the expected size, use it. if ( wp_image_matches_ratio( $image_width, $image_height, $image['width'], $image['height'] ) ) { // Add the URL, descriptor, and value to the sources array to be returned. $source = array( 'url' => $image_baseurl . $image['file'], 'descriptor' => 'w', 'value' => $image['width'], ); // The 'src' image has to be the first in the 'srcset', because of a bug in iOS8. See #35030. if ( $is_src ) { $sources = array( $image['width'] => $source ) + $sources; } else { $sources[ $image['width'] ] = $source; } } } /* * Filters an image's 'srcset' sources. * * @since 4.4.0 * * @param array $sources { * One or more arrays of source data to include in the 'srcset'. * * @type array $width { * @type string $url The URL of an image source. * @type string $descriptor The descriptor type used in the image candidate string, * either 'w' or 'x'. * @type int $value The source width if paired with a 'w' descriptor, or a * pixel density value if paired with an 'x' descriptor. * } * } * @param array $size_array { * An array of requested width and height values. * * @type int $0 The width in pixels. * @type int $1 The height in pixels. * } * @param string $image_src The 'src' of the image. * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'. * @param int $attachment_id Image attachment ID or 0. / $sources = apply_filters( 'wp_calculate_image_srcset', $sources, $size_array, $image_src, $image_meta, $attachment_id ); // Only return a 'srcset' value if there is more than one source. if ( ! $src_matched \|\| ! is_array( $sources ) \|\| count( $sources ) < 2 ) { return false; } $srcset = ''; foreach ( $sources as $source ) { $srcset .= str_replace( ' ', '%20', $source['url'] ) . ' ' . $source['value'] . $source['descriptor'] . ', '; } return rtrim( $srcset, ', ' ); } /* * Retrieves the value for an image attachment's 'sizes' attribute. * * @since 4.4.0 * * @see wp_calculate_image_sizes() * * @param int $attachment_id Image attachment ID. * @param string\|int[] $size Optional. Image size. Accepts any registered image size name, or an array of * width and height values in pixels (in that order). Default 'medium'. * @param array\|null $image_meta Optional. The image meta data as returned by 'wp_get_attachment_metadata()'. * Default null. * @return string\|false A valid source size value for use in a 'sizes' attribute or false. / function wp_get_attachment_image_sizes( $attachment_id, $size = 'medium', $image_meta = null ) { $image = wp_get_attachment_image_src( $attachment_id, $size ); if ( ! $image ) { return false; } if ( ! is_array( $image_meta ) ) { $image_meta = wp_get_attachment_metadata( $attachment_id ); } $image_src = $image[0]; $size_array = array( absint( $image[1] ), absint( $image[2] ), ); return wp_calculate_image_sizes( $size_array, $image_src, $image_meta, $attachment_id ); } /* * Creates a 'sizes' attribute value for an image. * * @since 4.4.0 * * @param string\|int[] $size Image size. Accepts any registered image size name, or an array of * width and height values in pixels (in that order). * @param string\|null $image_src Optional. The URL to the image file. Default null. * @param array\|null $image_meta Optional. The image meta data as returned by 'wp_get_attachment_metadata()'. * Default null. * @param int $attachment_id Optional. Image attachment ID. Either `$image_meta` or `$attachment_id` * is needed when using the image size name as argument for `$size`. Default 0. * @return string\|false A valid source size value for use in a 'sizes' attribute or false. / function wp_calculate_image_sizes( $size, $image_src = null, $image_meta = null, $attachment_id = 0 ) { $width = 0; if ( is_array( $size ) ) { $width = absint( $size[0] ); } elseif ( is_string( $size ) ) { if ( ! $image_meta && $attachment_id ) { $image_meta = wp_get_attachment_metadata( $attachment_id ); } if ( is_array( $image_meta ) ) { $size_array = _wp_get_image_size_from_meta( $size, $image_meta ); if ( $size_array ) { $width = absint( $size_array[0] ); } } } if ( ! $width ) { return false; } // Setup the default 'sizes' attribute. $sizes = sprintf( '(max-width: %1$dpx) 100vw, %1$dpx', $width ); /* * Filters the output of 'wp_calculate_image_sizes()'. * * @since 4.4.0 * * @param string $sizes A source size value for use in a 'sizes' attribute. * @param string\|int[] $size Requested image size. Can be any registered image size name, or * an array of width and height values in pixels (in that order). * @param string\|null $image_src The URL to the image file or null. * @param array\|null $image_meta The image meta data as returned by wp_get_attachment_metadata() or null. * @param int $attachment_id Image attachment ID of the original image or 0. / return apply_filters( 'wp_calculate_image_sizes', $sizes, $size, $image_src, $image_meta, $attachment_id ); } /* * Determines if the image meta data is for the image source file. * * The image meta data is retrieved by attachment post ID. In some cases the post IDs may change. * For example when the website is exported and imported at another website. Then the * attachment post IDs that are in post_content for the exported website may not match * the same attachments at the new website. * * @since 5.5.0 * * @param string $image_location The full path or URI to the image file. * @param array $image_meta The attachment meta data as returned by 'wp_get_attachment_metadata()'. * @param int $attachment_id Optional. The image attachment ID. Default 0. * @return bool Whether the image meta is for this image file. / function wp_image_file_matches_image_meta( $image_location, $image_meta, $attachment_id = 0 ) { $match = false; // Ensure the $image_meta is valid. if ( isset( $image_meta['file'] ) && strlen( $image_meta['file'] ) > 4 ) { // Remove query args in image URI. list( $image_location ) = explode( '?', $image_location ); // Check if the relative image path from the image meta is at the end of $image_location. if ( strrpos( $image_location, $image_meta['file'] ) === strlen( $image_location ) - strlen( $image_meta['file'] ) ) { $match = true; } else { // Retrieve the uploads sub-directory from the full size image. $dirname = _wp_get_attachment_relative_path( $image_meta['file'] ); if ( $dirname ) { $dirname = trailingslashit( $dirname ); } if ( ! empty( $image_meta['original_image'] ) ) { $relative_path = $dirname . $image_meta['original_image']; if ( strrpos( $image_location, $relative_path ) === strlen( $image_location ) - strlen( $relative_path ) ) { $match = true; } } if ( ! $match && ! empty( $image_meta['sizes'] ) ) { foreach ( $image_meta['sizes'] as $image_size_data ) { $relative_path = $dirname . $image_size_data['file']; if ( strrpos( $image_location, $relative_path ) === strlen( $image_location ) - strlen( $relative_path ) ) { $match = true; break; } } } } } /* * Filters whether an image path or URI matches image meta. * * @since 5.5.0 * * @param bool $match Whether the image relative path from the image meta * matches the end of the URI or path to the image file. * @param string $image_location Full path or URI to the tested image file. * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'. * @param int $attachment_id The image attachment ID or 0 if not supplied. / return apply_filters( 'wp_image_file_matches_image_meta', $match, $image_location, $image_meta, $attachment_id ); } /* * Determines an image's width and height dimensions based on the source file. * * @since 5.5.0 * * @param string $image_src The image source file. * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'. * @param int $attachment_id Optional. The image attachment ID. Default 0. * @return array\|false Array with first element being the width and second element being the height, * or false if dimensions cannot be determined. / function wp_image_src_get_dimensions( $image_src, $image_meta, $attachment_id = 0 ) { $dimensions = false; // Is it a full size image? if ( isset( $image_meta['file'] ) && str_contains( $image_src, wp_basename( $image_meta['file'] ) ) ) { $dimensions = array( (int) $image_meta['width'], (int) $image_meta['height'], ); } if ( ! $dimensions && ! empty( $image_meta['sizes'] ) ) { $src_filename = wp_basename( $image_src ); foreach ( $image_meta['sizes'] as $image_size_data ) { if ( $src_filename === $image_size_data['file'] ) { $dimensions = array( (int) $image_size_data['width'], (int) $image_size_data['height'], ); break; } } } /* * Filters the 'wp_image_src_get_dimensions' value. * * @since 5.7.0 * * @param array\|false $dimensions Array with first element being the width * and second element being the height, or * false if dimensions could not be determined. * @param string $image_src The image source file. * @param array $image_meta The image meta data as returned by * 'wp_get_attachment_metadata()'. * @param int $attachment_id The image attachment ID. Default 0. / return apply_filters( 'wp_image_src_get_dimensions', $dimensions, $image_src, $image_meta, $attachment_id ); } /* * Adds 'srcset' and 'sizes' attributes to an existing 'img' element. * * @since 4.4.0 * * @see wp_calculate_image_srcset() * @see wp_calculate_image_sizes() * * @param string $image An HTML 'img' element to be filtered. * @param array $image_meta The image meta data as returned by 'wp_get_attachment_metadata()'. * @param int $attachment_id Image attachment ID. * @return string Converted 'img' element with 'srcset' and 'sizes' attributes added. / function wp_image_add_srcset_and_sizes( $image, $image_meta, $attachment_id ) { // Ensure the image meta exists. if ( empty( $image_meta['sizes'] ) ) { return $image; } $image_src = preg_match( '/src="([^"]+)"/', $image, $match_src ) ? $match_src[1] : ''; list( $image_src ) = explode( '?', $image_src ); // Return early if we couldn't get the image source. if ( ! $image_src ) { return $image; } // Bail early if an image has been inserted and later edited. if ( preg_match( '/-e[0-9]{13}/', $image_meta['file'], $img_edit_hash ) && ! str_contains( wp_basename( $image_src ), $img_edit_hash[0] ) ) { return $image; } $width = preg_match( '/ width="([0-9]+)"/', $image, $match_width ) ? (int) $match_width[1] : 0; $height = preg_match( '/ height="([0-9]+)"/', $image, $match_height ) ? (int) $match_height[1] : 0; if ( $width && $height ) { $size_array = array( $width, $height ); } else { $size_array = wp_image_src_get_dimensions( $image_src, $image_meta, $attachment_id ); if ( ! $size_array ) { return $image; } } $srcset = wp_calculate_image_srcset( $size_array, $image_src, $image_meta, $attachment_id ); if ( $srcset ) { // Check if there is already a 'sizes' attribute. $sizes = strpos( $image, ' sizes=' ); if ( ! $sizes ) { $sizes = wp_calculate_image_sizes( $size_array, $image_src, $image_meta, $attachment_id ); } } if ( $srcset && $sizes ) { // Format the 'srcset' and 'sizes' string and escape attributes. $attr = sprintf( ' srcset="%s"', esc_attr( $srcset ) ); if ( is_string( $sizes ) ) { $attr .= sprintf( ' sizes="%s"', esc_attr( $sizes ) ); } // Add the srcset and sizes attributes to the image markup. return preg_replace( '/<img ([^>]+?)[\/ ]>/', '<img $1' . $attr . ' />', $image ); } return $image; } /** * Determines whether to add the `loading` attribute to the specified tag in the specified context. * * @since 5.5.0 * @since 5.7.0 Now returns `true` by default for `iframe` tags. * * @param string $tag_name The tag name. * @param string $context Additional context, like the current filter name * or the function name from where this was called. * @return bool Whether to add the attribute. / function wp_lazy_loading_enabled( $tag_name, $context ) { / * By default add to all 'img' and 'iframe' tags. * See https://html.spec.whatwg.org/multipage/embedded-content.html#attr-img-loading * See https://html.spec.whatwg.org/multipage/iframe-embed-object.html#attr-iframe-loading / $default = ( 'img' === $tag_name \|\| 'iframe' === $tag_name ); /* * Filters whether to add the `loading` attribute to the specified tag in the specified context. * * @since 5.5.0 * * @param bool $default Default value. * @param string $tag_name The tag name. * @param string $context Additional context, like the current filter name * or the function name from where this was called. / return (bool) apply_filters( 'wp_lazy_loading_enabled', $default, $tag_name, $context ); } /* * Filters specific tags in post content and modifies their markup. * * Modifies HTML tags in post content to include new browser and HTML technologies * that may not have existed at the time of post creation. These modifications currently * include adding `srcset`, `sizes`, and `loading` attributes to `img` HTML tags, as well * as adding `loading` attributes to `iframe` HTML tags. * Future similar optimizations should be added/expected here. * * @since 5.5.0 * @since 5.7.0 Now supports adding `loading` attributes to `iframe` tags. * * @see wp_img_tag_add_width_and_height_attr() * @see wp_img_tag_add_srcset_and_sizes_attr() * @see wp_img_tag_add_loading_optimization_attrs() * @see wp_iframe_tag_add_loading_attr() * * @param string $content The HTML content to be filtered. * @param string $context Optional. Additional context to pass to the filters. * Defaults to `current_filter()` when not set. * @return string Converted content with images modified. / function wp_filter_content_tags( $content, $context = null ) { if ( null === $context ) { $context = current_filter(); } $add_iframe_loading_attr = wp_lazy_loading_enabled( 'iframe', $context ); if ( ! preg_match_all( '/<(img\|iframe)\s[^>]+>/', $content, $matches, PREG_SET_ORDER ) ) { return $content; } // List of the unique `img` tags found in $content. $images = array(); // List of the unique `iframe` tags found in $content. $iframes = array(); foreach ( $matches as $match ) { list( $tag, $tag_name ) = $match; switch ( $tag_name ) { case 'img': if ( preg_match( '/wp-image-([0-9]+)/i', $tag, $class_id ) ) { $attachment_id = absint( $class_id[1] ); if ( $attachment_id ) { / * If exactly the same image tag is used more than once, overwrite it. * All identical tags will be replaced later with 'str_replace()'. / $images[ $tag ] = $attachment_id; break; } } $images[ $tag ] = 0; break; case 'iframe': $iframes[ $tag ] = 0; break; } } // Reduce the array to unique attachment IDs. $attachment_ids = array_unique( array_filter( array_values( $images ) ) ); if ( count( $attachment_ids ) > 1 ) { / * Warm the object cache with post and meta information for all found * images to avoid making individual database calls. / _prime_post_caches( $attachment_ids, false, true ); } // Iterate through the matches in order of occurrence as it is relevant for whether or not to lazy-load. foreach ( $matches as $match ) { // Filter an image match. if ( isset( $images[ $match[0] ] ) ) { $filtered_image = $match[0]; $attachment_id = $images[ $match[0] ]; // Add 'width' and 'height' attributes if applicable. if ( $attachment_id > 0 && ! str_contains( $filtered_image, ' width=' ) && ! str_contains( $filtered_image, ' height=' ) ) { $filtered_image = wp_img_tag_add_width_and_height_attr( $filtered_image, $context, $attachment_id ); } // Add 'srcset' and 'sizes' attributes if applicable. if ( $attachment_id > 0 && ! str_contains( $filtered_image, ' srcset=' ) ) { $filtered_image = wp_img_tag_add_srcset_and_sizes_attr( $filtered_image, $context, $attachment_id ); } // Add loading optimization attributes if applicable. $filtered_image = wp_img_tag_add_loading_optimization_attrs( $filtered_image, $context ); // Adds 'auto' to the sizes attribute if applicable. $filtered_image = wp_img_tag_add_auto_sizes( $filtered_image ); /* * Filters an img tag within the content for a given context. * * @since 6.0.0 * * @param string $filtered_image Full img tag with attributes that will replace the source img tag. * @param string $context Additional context, like the current filter name or the function name from where this was called. * @param int $attachment_id The image attachment ID. May be 0 in case the image is not an attachment. / $filtered_image = apply_filters( 'wp_content_img_tag', $filtered_image, $context, $attachment_id ); if ( $filtered_image !== $match[0] ) { $content = str_replace( $match[0], $filtered_image, $content ); } / * Unset image lookup to not run the same logic again unnecessarily if the same image tag is used more than * once in the same blob of content. / unset( $images[ $match[0] ] ); } // Filter an iframe match. if ( isset( $iframes[ $match[0] ] ) ) { $filtered_iframe = $match[0]; // Add 'loading' attribute if applicable. if ( $add_iframe_loading_attr && ! str_contains( $filtered_iframe, ' loading=' ) ) { $filtered_iframe = wp_iframe_tag_add_loading_attr( $filtered_iframe, $context ); } if ( $filtered_iframe !== $match[0] ) { $content = str_replace( $match[0], $filtered_iframe, $content ); } / * Unset iframe lookup to not run the same logic again unnecessarily if the same iframe tag is used more * than once in the same blob of content. / unset( $iframes[ $match[0] ] ); } } return $content; } /* * Adds 'auto' to the sizes attribute to the image, if the image is lazy loaded and does not already include it. * * @since 6.7.0 * * @param string $image The image tag markup being filtered. * @return string The filtered image tag markup. / function wp_img_tag_add_auto_sizes( string $image ): string { /* * Filters whether auto-sizes for lazy loaded images is enabled. * * @since 6.7.1 * * @param boolean $enabled Whether auto-sizes for lazy loaded images is enabled. / if ( ! apply_filters( 'wp_img_tag_add_auto_sizes', true ) ) { return $image; } $processor = new WP_HTML_Tag_Processor( $image ); // Bail if there is no IMG tag. if ( ! $processor->next_tag( array( 'tag_name' => 'IMG' ) ) ) { return $image; } // Bail early if the image is not lazy-loaded. $loading = $processor->get_attribute( 'loading' ); if ( ! is_string( $loading ) \|\| 'lazy' !== strtolower( trim( $loading, " \t\f\r\n" ) ) ) { return $image; } / * Bail early if the image doesn't have a width attribute. * Per WordPress Core itself, lazy-loaded images should always have a width attribute. * However, it is possible that lazy-loading could be added by a plugin, where we don't have that guarantee. * As such, it still makes sense to ensure presence of a width attribute here in order to use `sizes=auto`. / $width = $processor->get_attribute( 'width' ); if ( ! is_string( $width ) \|\| '' === $width ) { return $image; } $sizes = $processor->get_attribute( 'sizes' ); // Bail early if the image is not responsive. if ( ! is_string( $sizes ) ) { return $image; } // Don't add 'auto' to the sizes attribute if it already exists. if ( wp_sizes_attribute_includes_valid_auto( $sizes ) ) { return $image; } $processor->set_attribute( 'sizes', "auto, $sizes" ); return $processor->get_updated_html(); } /* * Checks whether the given 'sizes' attribute includes the 'auto' keyword as the first item in the list. * * Per the HTML spec, if present it must be the first entry. * * @since 6.7.0 * * @param string $sizes_attr The 'sizes' attribute value. * @return bool True if the 'auto' keyword is present, false otherwise. / function wp_sizes_attribute_includes_valid_auto( string $sizes_attr ): bool { list( $first_size ) = explode( ',', $sizes_attr, 2 ); return 'auto' === strtolower( trim( $first_size, " \t\f\r\n" ) ); } /* * Prints a CSS rule to fix potential visual issues with images using `sizes=auto`. * * This rule overrides the similar rule in the default user agent stylesheet, to avoid images that use e.g. * `width: auto` or `width: fit-content` to appear smaller. * * @since 6.7.1 * @see https://html.spec.whatwg.org/multipage/rendering.html#img-contain-size * @see https://core.trac.wordpress.org/ticket/62413 / function wp_print_auto_sizes_contain_css_fix() { /* This filter is documented in wp-includes/media.php / $add_auto_sizes = apply_filters( 'wp_img_tag_add_auto_sizes', true ); if ( ! $add_auto_sizes ) { return; } ?> <style>img:is([sizes="auto" i], [sizes^="auto," i]) { contain-intrinsic-size: 3000px 1500px }</style> <?php } /* * Adds optimization attributes to an `img` HTML tag. * * @since 6.3.0 * * @param string $image The HTML `img` tag where the attribute should be added. * @param string $context Additional context to pass to the filters. * @return string Converted `img` tag with optimization attributes added. / function wp_img_tag_add_loading_optimization_attrs( $image, $context ) { $src = preg_match( '/ src=["\']?([^"\'])/i', $image, $matche_src ) ? $matche_src[1] : null; $width = preg_match( '/ width=["\']([0-9]+)["\']/', $image, $match_width ) ? (int) $match_width[1] : null; $height = preg_match( '/ height=["\']([0-9]+)["\']/', $image, $match_height ) ? (int) $match_height[1] : null; $loading_val = preg_match( '/ loading=["\']([A-Za-z]+)["\']/', $image, $match_loading ) ? $match_loading[1] : null; $fetchpriority_val = preg_match( '/ fetchpriority=["\']([A-Za-z]+)["\']/', $image, $match_fetchpriority ) ? $match_fetchpriority[1] : null; $decoding_val = preg_match( '/ decoding=["\']([A-Za-z]+)["\']/', $image, $match_decoding ) ? $match_decoding[1] : null; /* * Get loading optimization attributes to use. * This must occur before the conditional check below so that even images * that are ineligible for being lazy-loaded are considered. / $optimization_attrs = wp_get_loading_optimization_attributes( 'img', array( 'src' => $src, 'width' => $width, 'height' => $height, 'loading' => $loading_val, 'fetchpriority' => $fetchpriority_val, 'decoding' => $decoding_val, ), $context ); // Images should have source for the loading optimization attributes to be added. if ( ! str_contains( $image, ' src="' ) ) { return $image; } if ( empty( $decoding_val ) ) { /* * Filters the `decoding` attribute value to add to an image. Default `async`. * * Returning a falsey value will omit the attribute. * * @since 6.1.0 * * @param string\|false\|null $value The `decoding` attribute value. Returning a falsey value * will result in the attribute being omitted for the image. * Otherwise, it may be: 'async', 'sync', or 'auto'. Defaults to false. * @param string $image The HTML `img` tag to be filtered. * @param string $context Additional context about how the function was called * or where the img tag is. / $filtered_decoding_attr = apply_filters( 'wp_img_tag_add_decoding_attr', isset( $optimization_attrs['decoding'] ) ? $optimization_attrs['decoding'] : false, $image, $context ); // Validate the values after filtering. if ( isset( $optimization_attrs['decoding'] ) && ! $filtered_decoding_attr ) { // Unset `decoding` attribute if `$filtered_decoding_attr` is set to `false`. unset( $optimization_attrs['decoding'] ); } elseif ( in_array( $filtered_decoding_attr, array( 'async', 'sync', 'auto' ), true ) ) { $optimization_attrs['decoding'] = $filtered_decoding_attr; } if ( ! empty( $optimization_attrs['decoding'] ) ) { $image = str_replace( '<img', '<img decoding="' . esc_attr( $optimization_attrs['decoding'] ) . '"', $image ); } } // Images should have dimension attributes for the 'loading' and 'fetchpriority' attributes to be added. if ( ! str_contains( $image, ' width="' ) \|\| ! str_contains( $image, ' height="' ) ) { return $image; } // Retained for backward compatibility. $loading_attrs_enabled = wp_lazy_loading_enabled( 'img', $context ); if ( empty( $loading_val ) && $loading_attrs_enabled ) { /* * Filters the `loading` attribute value to add to an image. Default `lazy`. * * Returning `false` or an empty string will not add the attribute. * Returning `true` will add the default value. * * @since 5.5.0 * * @param string\|bool $value The `loading` attribute value. Returning a falsey value will result in * the attribute being omitted for the image. * @param string $image The HTML `img` tag to be filtered. * @param string $context Additional context about how the function was called or where the img tag is. / $filtered_loading_attr = apply_filters( 'wp_img_tag_add_loading_attr', isset( $optimization_attrs['loading'] ) ? $optimization_attrs['loading'] : false, $image, $context ); // Validate the values after filtering. if ( isset( $optimization_attrs['loading'] ) && ! $filtered_loading_attr ) { // Unset `loading` attributes if `$filtered_loading_attr` is set to `false`. unset( $optimization_attrs['loading'] ); } elseif ( in_array( $filtered_loading_attr, array( 'lazy', 'eager' ), true ) ) { / * If the filter changed the loading attribute to "lazy" when a fetchpriority attribute * with value "high" is already present, trigger a warning since those two attribute * values should be mutually exclusive. * * The same warning is present in `wp_get_loading_optimization_attributes()`, and here it * is only intended for the specific scenario where the above filtered caused the problem. / if ( isset( $optimization_attrs['fetchpriority'] ) && 'high' === $optimization_attrs['fetchpriority'] && ( isset( $optimization_attrs['loading'] ) ? $optimization_attrs['loading'] : false ) !== $filtered_loading_attr && 'lazy' === $filtered_loading_attr ) { _doing_it_wrong( __FUNCTION__, __( 'An image should not be lazy-loaded and marked as high priority at the same time.' ), '6.3.0' ); } // The filtered value will still be respected. $optimization_attrs['loading'] = $filtered_loading_attr; } if ( ! empty( $optimization_attrs['loading'] ) ) { $image = str_replace( '<img', '<img loading="' . esc_attr( $optimization_attrs['loading'] ) . '"', $image ); } } if ( empty( $fetchpriority_val ) && ! empty( $optimization_attrs['fetchpriority'] ) ) { $image = str_replace( '<img', '<img fetchpriority="' . esc_attr( $optimization_attrs['fetchpriority'] ) . '"', $image ); } return $image; } /* * Adds `width` and `height` attributes to an `img` HTML tag. * * @since 5.5.0 * * @param string $image The HTML `img` tag where the attribute should be added. * @param string $context Additional context to pass to the filters. * @param int $attachment_id Image attachment ID. * @return string Converted 'img' element with 'width' and 'height' attributes added. / function wp_img_tag_add_width_and_height_attr( $image, $context, $attachment_id ) { $image_src = preg_match( '/src="([^"]+)"/', $image, $match_src ) ? $match_src[1] : ''; list( $image_src ) = explode( '?', $image_src ); // Return early if we couldn't get the image source. if ( ! $image_src ) { return $image; } /* * Filters whether to add the missing `width` and `height` HTML attributes to the img tag. Default `true`. * * Returning anything else than `true` will not add the attributes. * * @since 5.5.0 * * @param bool $value The filtered value, defaults to `true`. * @param string $image The HTML `img` tag where the attribute should be added. * @param string $context Additional context about how the function was called or where the img tag is. * @param int $attachment_id The image attachment ID. / $add = apply_filters( 'wp_img_tag_add_width_and_height_attr', true, $image, $context, $attachment_id ); if ( true === $add ) { $image_meta = wp_get_attachment_metadata( $attachment_id ); $size_array = wp_image_src_get_dimensions( $image_src, $image_meta, $attachment_id ); if ( $size_array && $size_array[0] && $size_array[1] ) { // If the width is enforced through style (e.g. in an inline image), calculate the dimension attributes. $style_width = preg_match( '/style="width:\s(\d+)px;"/', $image, $match_width ) ? (int) $match_width[1] : 0; if ( $style_width ) { $size_array[1] = (int) round( $size_array[1] * $style_width / $size_array[0] ); $size_array[0] = $style_width; } $hw = trim( image_hwstring( $size_array[0], $size_array[1] ) ); return str_replace( '<img', "<img {$hw}", $image ); } } return $image; } /** * Adds `srcset` and `sizes` attributes to an existing `img` HTML tag. * * @since 5.5.0 * * @param string $image The HTML `img` tag where the attribute should be added. * @param string $context Additional context to pass to the filters. * @param int $attachment_id Image attachment ID. * @return string Converted 'img' element with 'loading' attribute added. / function wp_img_tag_add_srcset_and_sizes_attr( $image, $context, $attachment_id ) { /* * Filters whether to add the `srcset` and `sizes` HTML attributes to the img tag. Default `true`. * * Returning anything else than `true` will not add the attributes. * * @since 5.5.0 * * @param bool $value The filtered value, defaults to `true`. * @param string $image The HTML `img` tag where the attribute should be added. * @param string $context Additional context about how the function was called or where the img tag is. * @param int $attachment_id The image attachment ID. / $add = apply_filters( 'wp_img_tag_add_srcset_and_sizes_attr', true, $image, $context, $attachment_id ); if ( true === $add ) { $image_meta = wp_get_attachment_metadata( $attachment_id ); return wp_image_add_srcset_and_sizes( $image, $image_meta, $attachment_id ); } return $image; } /* * Adds `loading` attribute to an `iframe` HTML tag. * * @since 5.7.0 * * @param string $iframe The HTML `iframe` tag where the attribute should be added. * @param string $context Additional context to pass to the filters. * @return string Converted `iframe` tag with `loading` attribute added. / function wp_iframe_tag_add_loading_attr( $iframe, $context ) { / * Get loading attribute value to use. This must occur before the conditional check below so that even iframes that * are ineligible for being lazy-loaded are considered. / $optimization_attrs = wp_get_loading_optimization_attributes( 'iframe', array( / * The concrete values for width and height are not important here for now * since fetchpriority is not yet supported for iframes. * TODO: Use WP_HTML_Tag_Processor to extract actual values once support is * added. / 'width' => str_contains( $iframe, ' width="' ) ? 100 : null, 'height' => str_contains( $iframe, ' height="' ) ? 100 : null, // This function is never called when a 'loading' attribute is already present. 'loading' => null, ), $context ); // Iframes should have source and dimension attributes for the `loading` attribute to be added. if ( ! str_contains( $iframe, ' src="' ) \|\| ! str_contains( $iframe, ' width="' ) \|\| ! str_contains( $iframe, ' height="' ) ) { return $iframe; } $value = isset( $optimization_attrs['loading'] ) ? $optimization_attrs['loading'] : false; /* * Filters the `loading` attribute value to add to an iframe. Default `lazy`. * * Returning `false` or an empty string will not add the attribute. * Returning `true` will add the default value. * * @since 5.7.0 * * @param string\|bool $value The `loading` attribute value. Returning a falsey value will result in * the attribute being omitted for the iframe. * @param string $iframe The HTML `iframe` tag to be filtered. * @param string $context Additional context about how the function was called or where the iframe tag is. / $value = apply_filters( 'wp_iframe_tag_add_loading_attr', $value, $iframe, $context ); if ( $value ) { if ( ! in_array( $value, array( 'lazy', 'eager' ), true ) ) { $value = 'lazy'; } return str_replace( '<iframe', '<iframe loading="' . esc_attr( $value ) . '"', $iframe ); } return $iframe; } /* * Adds a 'wp-post-image' class to post thumbnails. Internal use only. * * Uses the {@see 'begin_fetch_post_thumbnail_html'} and {@see 'end_fetch_post_thumbnail_html'} * action hooks to dynamically add/remove itself so as to only filter post thumbnails. * * @ignore * @since 2.9.0 * * @param string[] $attr Array of thumbnail attributes including src, class, alt, title, keyed by attribute name. * @return string[] Modified array of attributes including the new 'wp-post-image' class. / function _wp_post_thumbnail_class_filter( $attr ) { $attr['class'] .= ' wp-post-image'; return $attr; } /* * Adds '_wp_post_thumbnail_class_filter' callback to the 'wp_get_attachment_image_attributes' * filter hook. Internal use only. * * @ignore * @since 2.9.0 * * @param string[] $attr Array of thumbnail attributes including src, class, alt, title, keyed by attribute name. / function _wp_post_thumbnail_class_filter_add( $attr ) { add_filter( 'wp_get_attachment_image_attributes', '_wp_post_thumbnail_class_filter' ); } /* * Removes the '_wp_post_thumbnail_class_filter' callback from the 'wp_get_attachment_image_attributes' * filter hook. Internal use only. * * @ignore * @since 2.9.0 * * @param string[] $attr Array of thumbnail attributes including src, class, alt, title, keyed by attribute name. / function _wp_post_thumbnail_class_filter_remove( $attr ) { remove_filter( 'wp_get_attachment_image_attributes', '_wp_post_thumbnail_class_filter' ); } /* * Overrides the context used in {@see wp_get_attachment_image()}. Internal use only. * * Uses the {@see 'begin_fetch_post_thumbnail_html'} and {@see 'end_fetch_post_thumbnail_html'} * action hooks to dynamically add/remove itself so as to only filter post thumbnails. * * @ignore * @since 6.3.0 * @access private * * @param string $context The context for rendering an attachment image. * @return string Modified context set to 'the_post_thumbnail'. / function _wp_post_thumbnail_context_filter( $context ) { return 'the_post_thumbnail'; } /* * Adds the '_wp_post_thumbnail_context_filter' callback to the 'wp_get_attachment_image_context' * filter hook. Internal use only. * * @ignore * @since 6.3.0 * @access private / function _wp_post_thumbnail_context_filter_add() { add_filter( 'wp_get_attachment_image_context', '_wp_post_thumbnail_context_filter' ); } /* * Removes the '_wp_post_thumbnail_context_filter' callback from the 'wp_get_attachment_image_context' * filter hook. Internal use only. * * @ignore * @since 6.3.0 * @access private / function _wp_post_thumbnail_context_filter_remove() { remove_filter( 'wp_get_attachment_image_context', '_wp_post_thumbnail_context_filter' ); } add_shortcode( 'wp_caption', 'img_caption_shortcode' ); add_shortcode( 'caption', 'img_caption_shortcode' ); /* * Builds the Caption shortcode output. * * Allows a plugin to replace the content that would otherwise be returned. The * filter is {@see 'img_caption_shortcode'} and passes an empty string, the attr * parameter and the content parameter values. * * The supported attributes for the shortcode are 'id', 'caption_id', 'align', * 'width', 'caption', and 'class'. * * @since 2.6.0 * @since 3.9.0 The `class` attribute was added. * @since 5.1.0 The `caption_id` attribute was added. * @since 5.9.0 The `$content` parameter default value changed from `null` to `''`. * * @param array $attr { * Attributes of the caption shortcode. * * @type string $id ID of the image and caption container element, i.e. `<figure>` or `<div>`. * @type string $caption_id ID of the caption element, i.e. `<figcaption>` or `<p>`. * @type string $align Class name that aligns the caption. Default 'alignnone'. Accepts 'alignleft', * 'aligncenter', alignright', 'alignnone'. * @type int $width The width of the caption, in pixels. * @type string $caption The caption text. * @type string $class Additional class name(s) added to the caption container. * } * @param string $content Optional. Shortcode content. Default empty string. * @return string HTML content to display the caption. / function img_caption_shortcode( $attr, $content = '' ) { // New-style shortcode with the caption inside the shortcode with the link and image tags. if ( ! isset( $attr['caption'] ) ) { if ( preg_match( '#((?:<a [^>]+>\s)?<img [^>]+>(?:\s</a>)?)(.)#is', $content, $matches ) ) { $content = $matches[1]; $attr['caption'] = trim( $matches[2] ); } } elseif ( str_contains( $attr['caption'], '<' ) ) { $attr['caption'] = wp_kses( $attr['caption'], 'post' ); } /** * Filters the default caption shortcode output. * * If the filtered output isn't empty, it will be used instead of generating * the default caption template. * * @since 2.6.0 * * @see img_caption_shortcode() * * @param string $output The caption output. Default empty. * @param array $attr Attributes of the caption shortcode. * @param string $content The image element, possibly wrapped in a hyperlink. / $output = apply_filters( 'img_caption_shortcode', '', $attr, $content ); if ( ! empty( $output ) ) { return $output; } $atts = shortcode_atts( array( 'id' => '', 'caption_id' => '', 'align' => 'alignnone', 'width' => '', 'caption' => '', 'class' => '', ), $attr, 'caption' ); $atts['width'] = (int) $atts['width']; if ( $atts['width'] < 1 \|\| empty( $atts['caption'] ) ) { return $content; } $id = ''; $caption_id = ''; $describedby = ''; if ( $atts['id'] ) { $atts['id'] = sanitize_html_class( $atts['id'] ); $id = 'id="' . esc_attr( $atts['id'] ) . '" '; } if ( $atts['caption_id'] ) { $atts['caption_id'] = sanitize_html_class( $atts['caption_id'] ); } elseif ( $atts['id'] ) { $atts['caption_id'] = 'caption-' . str_replace( '_', '-', $atts['id'] ); } if ( $atts['caption_id'] ) { $caption_id = 'id="' . esc_attr( $atts['caption_id'] ) . '" '; $describedby = 'aria-describedby="' . esc_attr( $atts['caption_id'] ) . '" '; } $class = trim( 'wp-caption ' . $atts['align'] . ' ' . $atts['class'] ); $html5 = current_theme_supports( 'html5', 'caption' ); // HTML5 captions never added the extra 10px to the image width. $width = $html5 ? $atts['width'] : ( 10 + $atts['width'] ); /* * Filters the width of an image's caption. * * By default, the caption is 10 pixels greater than the width of the image, * to prevent post content from running up against a floated image. * * @since 3.7.0 * * @see img_caption_shortcode() * * @param int $width Width of the caption in pixels. To remove this inline style, * return zero. * @param array $atts Attributes of the caption shortcode. * @param string $content The image element, possibly wrapped in a hyperlink. / $caption_width = apply_filters( 'img_caption_shortcode_width', $width, $atts, $content ); $style = ''; if ( $caption_width ) { $style = 'style="width: ' . (int) $caption_width . 'px" '; } if ( $html5 ) { $html = sprintf( '<figure %s%s%sclass="%s">%s%s</figure>', $id, $describedby, $style, esc_attr( $class ), do_shortcode( $content ), sprintf( '<figcaption %sclass="wp-caption-text">%s</figcaption>', $caption_id, $atts['caption'] ) ); } else { $html = sprintf( '<div %s%sclass="%s">%s%s</div>', $id, $style, esc_attr( $class ), str_replace( '<img ', '<img ' . $describedby, do_shortcode( $content ) ), sprintf( '<p %sclass="wp-caption-text">%s</p>', $caption_id, $atts['caption'] ) ); } return $html; } add_shortcode( 'gallery', 'gallery_shortcode' ); /* * Builds the Gallery shortcode output. * * This implements the functionality of the Gallery Shortcode for displaying * WordPress images on a post. * * @since 2.5.0 * @since 2.8.0 Added the `$attr` parameter to set the shortcode output. New attributes included * such as `size`, `itemtag`, `icontag`, `captiontag`, and columns. Changed markup from * `div` tags to `dl`, `dt` and `dd` tags. Support more than one gallery on the * same page. * @since 2.9.0 Added support for `include` and `exclude` to shortcode. * @since 3.5.0 Use get_post() instead of global `$post`. Handle mapping of `ids` to `include` * and `orderby`. * @since 3.6.0 Added validation for tags used in gallery shortcode. Add orientation information to items. * @since 3.7.0 Introduced the `link` attribute. * @since 3.9.0 `html5` gallery support, accepting 'itemtag', 'icontag', and 'captiontag' attributes. * @since 4.0.0 Removed use of `extract()`. * @since 4.1.0 Added attribute to `wp_get_attachment_link()` to output `aria-describedby`. * @since 4.2.0 Passed the shortcode instance ID to `post_gallery` and `post_playlist` filters. * @since 4.6.0 Standardized filter docs to match documentation standards for PHP. * @since 5.1.0 Code cleanup for WPCS 1.0.0 coding standards. * @since 5.3.0 Saved progress of intermediate image creation after upload. * @since 5.5.0 Ensured that galleries can be output as a list of links in feeds. * @since 5.6.0 Replaced order-style PHP type conversion functions with typecasts. Fix logic for * an array of image dimensions. * * @param array $attr { * Attributes of the gallery shortcode. * * @type string $order Order of the images in the gallery. Default 'ASC'. Accepts 'ASC', 'DESC'. * @type string $orderby The field to use when ordering the images. Default 'menu_order ID'. * Accepts any valid SQL ORDERBY statement. * @type int $id Post ID. * @type string $itemtag HTML tag to use for each image in the gallery. * Default 'dl', or 'figure' when the theme registers HTML5 gallery support. * @type string $icontag HTML tag to use for each image's icon. * Default 'dt', or 'div' when the theme registers HTML5 gallery support. * @type string $captiontag HTML tag to use for each image's caption. * Default 'dd', or 'figcaption' when the theme registers HTML5 gallery support. * @type int $columns Number of columns of images to display. Default 3. * @type string\|int[] $size Size of the images to display. Accepts any registered image size name, or an array * of width and height values in pixels (in that order). Default 'thumbnail'. * @type string $ids A comma-separated list of IDs of attachments to display. Default empty. * @type string $include A comma-separated list of IDs of attachments to include. Default empty. * @type string $exclude A comma-separated list of IDs of attachments to exclude. Default empty. * @type string $link What to link each image to. Default empty (links to the attachment page). * Accepts 'file', 'none'. * } * @return string HTML content to display gallery. / function gallery_shortcode( $attr ) { $post = get_post(); static $instance = 0; ++$instance; if ( ! empty( $attr['ids'] ) ) { // 'ids' is explicitly ordered, unless you specify otherwise. if ( empty( $attr['orderby'] ) ) { $attr['orderby'] = 'post__in'; } $attr['include'] = $attr['ids']; } /* * Filters the default gallery shortcode output. * * If the filtered output isn't empty, it will be used instead of generating * the default gallery template. * * @since 2.5.0 * @since 4.2.0 The `$instance` parameter was added. * * @see gallery_shortcode() * * @param string $output The gallery output. Default empty. * @param array $attr Attributes of the gallery shortcode. * @param int $instance Unique numeric ID of this gallery shortcode instance. / $output = apply_filters( 'post_gallery', '', $attr, $instance ); if ( ! empty( $output ) ) { return $output; } $html5 = current_theme_supports( 'html5', 'gallery' ); $atts = shortcode_atts( array( 'order' => 'ASC', 'orderby' => 'menu_order ID', 'id' => $post ? $post->ID : 0, 'itemtag' => $html5 ? 'figure' : 'dl', 'icontag' => $html5 ? 'div' : 'dt', 'captiontag' => $html5 ? 'figcaption' : 'dd', 'columns' => 3, 'size' => 'thumbnail', 'include' => '', 'exclude' => '', 'link' => '', ), $attr, 'gallery' ); $id = (int) $atts['id']; if ( ! empty( $atts['include'] ) ) { $_attachments = get_posts( array( 'include' => $atts['include'], 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'], ) ); $attachments = array(); foreach ( $_attachments as $key => $val ) { $attachments[ $val->ID ] = $_attachments[ $key ]; } } elseif ( ! empty( $atts['exclude'] ) ) { $post_parent_id = $id; $attachments = get_children( array( 'post_parent' => $id, 'exclude' => $atts['exclude'], 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'], ) ); } else { $post_parent_id = $id; $attachments = get_children( array( 'post_parent' => $id, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'], ) ); } if ( ! empty( $post_parent_id ) ) { $post_parent = get_post( $post_parent_id ); // Terminate the shortcode execution if the user cannot read the post or it is password-protected. if ( ! is_post_publicly_viewable( $post_parent->ID ) && ! current_user_can( 'read_post', $post_parent->ID ) \|\| post_password_required( $post_parent ) ) { return ''; } } if ( empty( $attachments ) ) { return ''; } if ( is_feed() ) { $output = "\n"; foreach ( $attachments as $att_id => $attachment ) { if ( ! empty( $atts['link'] ) ) { if ( 'none' === $atts['link'] ) { $output .= wp_get_attachment_image( $att_id, $atts['size'], false, $attr ); } else { $output .= wp_get_attachment_link( $att_id, $atts['size'], false ); } } else { $output .= wp_get_attachment_link( $att_id, $atts['size'], true ); } $output .= "\n"; } return $output; } $itemtag = tag_escape( $atts['itemtag'] ); $captiontag = tag_escape( $atts['captiontag'] ); $icontag = tag_escape( $atts['icontag'] ); $valid_tags = wp_kses_allowed_html( 'post' ); if ( ! isset( $valid_tags[ $itemtag ] ) ) { $itemtag = 'dl'; } if ( ! isset( $valid_tags[ $captiontag ] ) ) { $captiontag = 'dd'; } if ( ! isset( $valid_tags[ $icontag ] ) ) { $icontag = 'dt'; } $columns = (int) $atts['columns']; $itemwidth = $columns > 0 ? floor( 100 / $columns ) : 100; $float = is_rtl() ? 'right' : 'left'; $selector = "gallery-{$instance}"; $gallery_style = ''; /* * Filters whether to print default gallery styles. * * @since 3.1.0 * * @param bool $print Whether to print default gallery styles. * Defaults to false if the theme supports HTML5 galleries. * Otherwise, defaults to true. / if ( apply_filters( 'use_default_gallery_style', ! $html5 ) ) { $type_attr = current_theme_supports( 'html5', 'style' ) ? '' : ' type="text/css"'; $gallery_style = " <style{$type_attr}> #{$selector} { margin: auto; } #{$selector} .gallery-item { float: {$float}; margin-top: 10px; text-align: center; width: {$itemwidth}%; } #{$selector} img { border: 2px solid #cfcfcf; } #{$selector} .gallery-caption { margin-left: 0; } / see gallery_shortcode() in wp-includes/media.php / </style>\n\t\t"; } $size_class = sanitize_html_class( is_array( $atts['size'] ) ? implode( 'x', $atts['size'] ) : $atts['size'] ); $gallery_div = "<div id='$selector' class='gallery galleryid-{$id} gallery-columns-{$columns} gallery-size-{$size_class}'>"; /* * Filters the default gallery shortcode CSS styles. * * @since 2.5.0 * * @param string $gallery_style Default CSS styles and opening HTML div container * for the gallery shortcode output. / $output = apply_filters( 'gallery_style', $gallery_style . $gallery_div ); $i = 0; foreach ( $attachments as $id => $attachment ) { $attr = ( trim( $attachment->post_excerpt ) ) ? array( 'aria-describedby' => "$selector-$id" ) : ''; if ( ! empty( $atts['link'] ) && 'file' === $atts['link'] ) { $image_output = wp_get_attachment_link( $id, $atts['size'], false, false, false, $attr ); } elseif ( ! empty( $atts['link'] ) && 'none' === $atts['link'] ) { $image_output = wp_get_attachment_image( $id, $atts['size'], false, $attr ); } else { $image_output = wp_get_attachment_link( $id, $atts['size'], true, false, false, $attr ); } $image_meta = wp_get_attachment_metadata( $id ); $orientation = ''; if ( isset( $image_meta['height'], $image_meta['width'] ) ) { $orientation = ( $image_meta['height'] > $image_meta['width'] ) ? 'portrait' : 'landscape'; } $output .= "<{$itemtag} class='gallery-item'>"; $output .= " <{$icontag} class='gallery-icon {$orientation}'> $image_output </{$icontag}>"; if ( $captiontag && trim( $attachment->post_excerpt ) ) { $output .= " <{$captiontag} class='wp-caption-text gallery-caption' id='$selector-$id'> " . wptexturize( $attachment->post_excerpt ) . " </{$captiontag}>"; } $output .= "</{$itemtag}>"; if ( ! $html5 && $columns > 0 && 0 === ++$i % $columns ) { $output .= '<br style="clear: both" />'; } } if ( ! $html5 && $columns > 0 && 0 !== $i % $columns ) { $output .= " <br style='clear: both' />"; } $output .= " </div>\n"; return $output; } /* * Outputs the templates used by playlists. * * @since 3.9.0 / function wp_underscore_playlist_templates() { ?> <script type="text/html" id="tmpl-wp-playlist-current-item"> <# if ( data.thumb && data.thumb.src ) { #> <img src="{{ data.thumb.src }}" alt="" /> <# } #> <div class="wp-playlist-caption"> <span class="wp-playlist-item-meta wp-playlist-item-title"> <# if ( data.meta.album \|\| data.meta.artist ) { #> <?php / translators: %s: Playlist item title. / printf( _x( '“%s”', 'playlist item title' ), '{{ data.title }}' ); ?> <# } else { #> {{ data.title }} <# } #> </span> <# if ( data.meta.album ) { #><span class="wp-playlist-item-meta wp-playlist-item-album">{{ data.meta.album }}</span><# } #> <# if ( data.meta.artist ) { #><span class="wp-playlist-item-meta wp-playlist-item-artist">{{ data.meta.artist }}</span><# } #> </div> </script> <script type="text/html" id="tmpl-wp-playlist-item"> <div class="wp-playlist-item"> <a class="wp-playlist-caption" href="{{ data.src }}"> {{ data.index ? ( data.index + '. ' ) : '' }} <# if ( data.caption ) { #> {{ data.caption }} <# } else { #> <# if ( data.artists && data.meta.artist ) { #> <span class="wp-playlist-item-title"> <?php / translators: %s: Playlist item title. / printf( _x( '“%s”', 'playlist item title' ), '{{{ data.title }}}' ); ?> </span> <span class="wp-playlist-item-artist"> — {{ data.meta.artist }}</span> <# } else { #> <span class="wp-playlist-item-title">{{{ data.title }}}</span> <# } #> <# } #> </a> <# if ( data.meta.length_formatted ) { #> <div class="wp-playlist-item-length">{{ data.meta.length_formatted }}</div> <# } #> </div> </script> <?php } /* * Outputs and enqueues default scripts and styles for playlists. * * @since 3.9.0 * * @param string $type Type of playlist. Accepts 'audio' or 'video'. / function wp_playlist_scripts( $type ) { wp_enqueue_style( 'wp-mediaelement' ); wp_enqueue_script( 'wp-playlist' ); ?> <!--[if lt IE 9]><script>document.createElement('<?php echo esc_js( $type ); ?>');</script><![endif]--> <?php add_action( 'wp_footer', 'wp_underscore_playlist_templates', 0 ); add_action( 'admin_footer', 'wp_underscore_playlist_templates', 0 ); } /* * Builds the Playlist shortcode output. * * This implements the functionality of the playlist shortcode for displaying * a collection of WordPress audio or video files in a post. * * @since 3.9.0 * * @global int $content_width * * @param array $attr { * Array of default playlist attributes. * * @type string $type Type of playlist to display. Accepts 'audio' or 'video'. Default 'audio'. * @type string $order Designates ascending or descending order of items in the playlist. * Accepts 'ASC', 'DESC'. Default 'ASC'. * @type string $orderby Any column, or columns, to sort the playlist. If $ids are * passed, this defaults to the order of the $ids array ('post__in'). * Otherwise default is 'menu_order ID'. * @type int $id If an explicit $ids array is not present, this parameter * will determine which attachments are used for the playlist. * Default is the current post ID. * @type array $ids Create a playlist out of these explicit attachment IDs. If empty, * a playlist will be created from all $type attachments of $id. * Default empty. * @type array $exclude List of specific attachment IDs to exclude from the playlist. Default empty. * @type string $style Playlist style to use. Accepts 'light' or 'dark'. Default 'light'. * @type bool $tracklist Whether to show or hide the playlist. Default true. * @type bool $tracknumbers Whether to show or hide the numbers next to entries in the playlist. Default true. * @type bool $images Show or hide the video or audio thumbnail (Featured Image/post * thumbnail). Default true. * @type bool $artists Whether to show or hide artist name in the playlist. Default true. * } * * @return string Playlist output. Empty string if the passed type is unsupported. / function wp_playlist_shortcode( $attr ) { global $content_width; $post = get_post(); static $instance = 0; ++$instance; if ( ! empty( $attr['ids'] ) ) { // 'ids' is explicitly ordered, unless you specify otherwise. if ( empty( $attr['orderby'] ) ) { $attr['orderby'] = 'post__in'; } $attr['include'] = $attr['ids']; } /* * Filters the playlist output. * * Returning a non-empty value from the filter will short-circuit generation * of the default playlist output, returning the passed value instead. * * @since 3.9.0 * @since 4.2.0 The `$instance` parameter was added. * * @param string $output Playlist output. Default empty. * @param array $attr An array of shortcode attributes. * @param int $instance Unique numeric ID of this playlist shortcode instance. / $output = apply_filters( 'post_playlist', '', $attr, $instance ); if ( ! empty( $output ) ) { return $output; } $atts = shortcode_atts( array( 'type' => 'audio', 'order' => 'ASC', 'orderby' => 'menu_order ID', 'id' => $post ? $post->ID : 0, 'include' => '', 'exclude' => '', 'style' => 'light', 'tracklist' => true, 'tracknumbers' => true, 'images' => true, 'artists' => true, ), $attr, 'playlist' ); $id = (int) $atts['id']; if ( 'audio' !== $atts['type'] ) { $atts['type'] = 'video'; } $args = array( 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => $atts['type'], 'order' => $atts['order'], 'orderby' => $atts['orderby'], ); if ( ! empty( $atts['include'] ) ) { $args['include'] = $atts['include']; $_attachments = get_posts( $args ); $attachments = array(); foreach ( $_attachments as $key => $val ) { $attachments[ $val->ID ] = $_attachments[ $key ]; } } elseif ( ! empty( $atts['exclude'] ) ) { $args['post_parent'] = $id; $args['exclude'] = $atts['exclude']; $attachments = get_children( $args ); } else { $args['post_parent'] = $id; $attachments = get_children( $args ); } if ( ! empty( $args['post_parent'] ) ) { $post_parent = get_post( $id ); // Terminate the shortcode execution if the user cannot read the post or it is password-protected. if ( ! current_user_can( 'read_post', $post_parent->ID ) \|\| post_password_required( $post_parent ) ) { return ''; } } if ( empty( $attachments ) ) { return ''; } if ( is_feed() ) { $output = "\n"; foreach ( $attachments as $att_id => $attachment ) { $output .= wp_get_attachment_link( $att_id ) . "\n"; } return $output; } $outer = 22; // Default padding and border of wrapper. $default_width = 640; $default_height = 360; $theme_width = empty( $content_width ) ? $default_width : ( $content_width - $outer ); $theme_height = empty( $content_width ) ? $default_height : round( ( $default_height $theme_width ) / $default_width ); $data = array( 'type' => $atts['type'], // Don't pass strings to JSON, will be truthy in JS. 'tracklist' => wp_validate_boolean( $atts['tracklist'] ), 'tracknumbers' => wp_validate_boolean( $atts['tracknumbers'] ), 'images' => wp_validate_boolean( $atts['images'] ), 'artists' => wp_validate_boolean( $atts['artists'] ), ); $tracks = array(); foreach ( $attachments as $attachment ) { $url = wp_get_attachment_url( $attachment->ID ); $ftype = wp_check_filetype( $url, wp_get_mime_types() ); $track = array( 'src' => $url, 'type' => $ftype['type'], 'title' => $attachment->post_title, 'caption' => $attachment->post_excerpt, 'description' => $attachment->post_content, ); $track['meta'] = array(); $meta = wp_get_attachment_metadata( $attachment->ID ); if ( ! empty( $meta ) ) { foreach ( wp_get_attachment_id3_keys( $attachment ) as $key => $label ) { if ( ! empty( $meta[ $key ] ) ) { $track['meta'][ $key ] = $meta[ $key ]; } } if ( 'video' === $atts['type'] ) { if ( ! empty( $meta['width'] ) && ! empty( $meta['height'] ) ) { $width = $meta['width']; $height = $meta['height']; $theme_height = round( ( $height * $theme_width ) / $width ); } else { $width = $default_width; $height = $default_height; } $track['dimensions'] = array( 'original' => compact( 'width', 'height' ), 'resized' => array( 'width' => $theme_width, 'height' => $theme_height, ), ); } } if ( $atts['images'] ) { $thumb_id = get_post_thumbnail_id( $attachment->ID ); if ( ! empty( $thumb_id ) ) { list( $src, $width, $height ) = wp_get_attachment_image_src( $thumb_id, 'full' ); $track['image'] = compact( 'src', 'width', 'height' ); list( $src, $width, $height ) = wp_get_attachment_image_src( $thumb_id, 'thumbnail' ); $track['thumb'] = compact( 'src', 'width', 'height' ); } else { $src = wp_mime_type_icon( $attachment->ID, '.svg' ); $width = 48; $height = 64; $track['image'] = compact( 'src', 'width', 'height' ); $track['thumb'] = compact( 'src', 'width', 'height' ); } } $tracks[] = $track; } $data['tracks'] = $tracks; $safe_type = esc_attr( $atts['type'] ); $safe_style = esc_attr( $atts['style'] ); ob_start(); if ( 1 === $instance ) { /** * Prints and enqueues playlist scripts, styles, and JavaScript templates. * * @since 3.9.0 * * @param string $type Type of playlist. Possible values are 'audio' or 'video'. * @param string $style The 'theme' for the playlist. Core provides 'light' and 'dark'. / do_action( 'wp_playlist_scripts', $atts['type'], $atts['style'] ); } ?> <div class="wp-playlist wp-<?php echo $safe_type; ?>-playlist wp-playlist-<?php echo $safe_style; ?>"> <?php if ( 'audio' === $atts['type'] ) : ?> <div class="wp-playlist-current-item"></div> <?php endif; ?> <<?php echo $safe_type; ?> controls="controls" preload="none" width="<?php echo (int) $theme_width; ?>" <?php if ( 'video' === $safe_type ) { echo ' height="', (int) $theme_height, '"'; } ?> ></<?php echo $safe_type; ?>> <div class="wp-playlist-next"></div> <div class="wp-playlist-prev"></div> <noscript> <ol> <?php foreach ( $attachments as $att_id => $attachment ) { printf( '<li>%s</li>', wp_get_attachment_link( $att_id ) ); } ?> </ol> </noscript> <script type="application/json" class="wp-playlist-script"><?php echo wp_json_encode( $data ); ?></script> </div> <?php return ob_get_clean(); } add_shortcode( 'playlist', 'wp_playlist_shortcode' ); /* * Provides a No-JS Flash fallback as a last resort for audio / video. * * @since 3.6.0 * * @param string $url The media element URL. * @return string Fallback HTML. / function wp_mediaelement_fallback( $url ) { /* * Filters the MediaElement fallback output for no-JS. * * @since 3.6.0 * * @param string $output Fallback output for no-JS. * @param string $url Media file URL. / return apply_filters( 'wp_mediaelement_fallback', sprintf( '<a href="%1$s">%1$s</a>', esc_url( $url ) ), $url ); } /* * Returns a filtered list of supported audio formats. * * @since 3.6.0 * * @return string[] Supported audio formats. / function wp_get_audio_extensions() { /* * Filters the list of supported audio formats. * * @since 3.6.0 * * @param string[] $extensions An array of supported audio formats. Defaults are * 'mp3', 'ogg', 'flac', 'm4a', 'wav'. / return apply_filters( 'wp_audio_extensions', array( 'mp3', 'ogg', 'flac', 'm4a', 'wav' ) ); } /* * Returns useful keys to use to lookup data from an attachment's stored metadata. * * @since 3.9.0 * * @param WP_Post $attachment The current attachment, provided for context. * @param string $context Optional. The context. Accepts 'edit', 'display'. Default 'display'. * @return string[] Key/value pairs of field keys to labels. / function wp_get_attachment_id3_keys( $attachment, $context = 'display' ) { $fields = array( 'artist' => __( 'Artist' ), 'album' => __( 'Album' ), ); if ( 'display' === $context ) { $fields['genre'] = __( 'Genre' ); $fields['year'] = __( 'Year' ); $fields['length_formatted'] = _x( 'Length', 'video or audio' ); } elseif ( 'js' === $context ) { $fields['bitrate'] = __( 'Bitrate' ); $fields['bitrate_mode'] = __( 'Bitrate Mode' ); } /* * Filters the editable list of keys to look up data from an attachment's metadata. * * @since 3.9.0 * * @param array $fields Key/value pairs of field keys to labels. * @param WP_Post $attachment Attachment object. * @param string $context The context. Accepts 'edit', 'display'. Default 'display'. / return apply_filters( 'wp_get_attachment_id3_keys', $fields, $attachment, $context ); } /* * Builds the Audio shortcode output. * * This implements the functionality of the Audio Shortcode for displaying * WordPress mp3s in a post. * * @since 3.6.0 * @since 6.8.0 Added the 'muted' attribute. * * @param array $attr { * Attributes of the audio shortcode. * * @type string $src URL to the source of the audio file. Default empty. * @type string $loop The 'loop' attribute for the `<audio>` element. Default empty. * @type string $autoplay The 'autoplay' attribute for the `<audio>` element. Default empty. * @type string $muted The 'muted' attribute for the `<audio>` element. Default 'false'. * @type string $preload The 'preload' attribute for the `<audio>` element. Default 'none'. * @type string $class The 'class' attribute for the `<audio>` element. Default 'wp-audio-shortcode'. * @type string $style The 'style' attribute for the `<audio>` element. Default 'width: 100%;'. * } * @param string $content Shortcode content. * @return string\|void HTML content to display audio. / function wp_audio_shortcode( $attr, $content = '' ) { $post_id = get_post() ? get_the_ID() : 0; static $instance = 0; ++$instance; /* * Filters the default audio shortcode output. * * If the filtered output isn't empty, it will be used instead of generating the default audio template. * * @since 3.6.0 * * @param string $html Empty variable to be replaced with shortcode markup. * @param array $attr Attributes of the shortcode. See {@see wp_audio_shortcode()}. * @param string $content Shortcode content. * @param int $instance Unique numeric ID of this audio shortcode instance. / $override = apply_filters( 'wp_audio_shortcode_override', '', $attr, $content, $instance ); if ( '' !== $override ) { return $override; } $audio = null; $default_types = wp_get_audio_extensions(); $defaults_atts = array( 'src' => '', 'loop' => '', 'autoplay' => '', 'muted' => 'false', 'preload' => 'none', 'class' => 'wp-audio-shortcode', 'style' => 'width: 100%;', ); foreach ( $default_types as $type ) { $defaults_atts[ $type ] = ''; } $atts = shortcode_atts( $defaults_atts, $attr, 'audio' ); $primary = false; if ( ! empty( $atts['src'] ) ) { $type = wp_check_filetype( $atts['src'], wp_get_mime_types() ); if ( ! in_array( strtolower( $type['ext'] ), $default_types, true ) ) { return sprintf( '<a class="wp-embedded-audio" href="%s">%s</a>', esc_url( $atts['src'] ), esc_html( $atts['src'] ) ); } $primary = true; array_unshift( $default_types, 'src' ); } else { foreach ( $default_types as $ext ) { if ( ! empty( $atts[ $ext ] ) ) { $type = wp_check_filetype( $atts[ $ext ], wp_get_mime_types() ); if ( strtolower( $type['ext'] ) === $ext ) { $primary = true; } } } } if ( ! $primary ) { $audios = get_attached_media( 'audio', $post_id ); if ( empty( $audios ) ) { return; } $audio = reset( $audios ); $atts['src'] = wp_get_attachment_url( $audio->ID ); if ( empty( $atts['src'] ) ) { return; } array_unshift( $default_types, 'src' ); } /* * Filters the media library used for the audio shortcode. * * @since 3.6.0 * * @param string $library Media library used for the audio shortcode. / $library = apply_filters( 'wp_audio_shortcode_library', 'mediaelement' ); if ( 'mediaelement' === $library && did_action( 'init' ) ) { wp_enqueue_style( 'wp-mediaelement' ); wp_enqueue_script( 'wp-mediaelement' ); } /* * Filters the class attribute for the audio shortcode output container. * * @since 3.6.0 * @since 4.9.0 The `$atts` parameter was added. * * @param string $class CSS class or list of space-separated classes. * @param array $atts Array of audio shortcode attributes. / $atts['class'] = apply_filters( 'wp_audio_shortcode_class', $atts['class'], $atts ); $html_atts = array( 'class' => $atts['class'], 'id' => sprintf( 'audio-%d-%d', $post_id, $instance ), 'loop' => wp_validate_boolean( $atts['loop'] ), 'autoplay' => wp_validate_boolean( $atts['autoplay'] ), 'muted' => wp_validate_boolean( $atts['muted'] ), 'preload' => $atts['preload'], 'style' => $atts['style'], ); // These ones should just be omitted altogether if they are blank. foreach ( array( 'loop', 'autoplay', 'preload', 'muted' ) as $a ) { if ( empty( $html_atts[ $a ] ) ) { unset( $html_atts[ $a ] ); } } $attr_strings = array(); foreach ( $html_atts as $attribute_name => $attribute_value ) { if ( in_array( $attribute_name, array( 'loop', 'autoplay', 'muted' ), true ) && true === $attribute_value ) { // Add boolean attributes without a value. $attr_strings[] = esc_attr( $attribute_name ); } elseif ( 'preload' === $attribute_name && ! empty( $attribute_value ) ) { // Handle the preload attribute with specific allowed values. $allowed_preload_values = array( 'none', 'metadata', 'auto' ); if ( in_array( $attribute_value, $allowed_preload_values, true ) ) { $attr_strings[] = sprintf( '%s="%s"', esc_attr( $attribute_name ), esc_attr( $attribute_value ) ); } } else { // For other attributes, include the value. $attr_strings[] = sprintf( '%s="%s"', esc_attr( $attribute_name ), esc_attr( $attribute_value ) ); } } $html = ''; if ( 'mediaelement' === $library && 1 === $instance ) { $html .= "<!--[if lt IE 9]><script>document.createElement('audio');</script><![endif]-->\n"; } $html .= sprintf( '<audio %s controls="controls">', implode( ' ', $attr_strings ) ); $fileurl = ''; $source = '<source type="%s" src="%s" />'; foreach ( $default_types as $fallback ) { if ( ! empty( $atts[ $fallback ] ) ) { if ( empty( $fileurl ) ) { $fileurl = $atts[ $fallback ]; } $type = wp_check_filetype( $atts[ $fallback ], wp_get_mime_types() ); $url = add_query_arg( '_', $instance, $atts[ $fallback ] ); $html .= sprintf( $source, $type['type'], esc_url( $url ) ); } } if ( 'mediaelement' === $library ) { $html .= wp_mediaelement_fallback( $fileurl ); } $html .= '</audio>'; /* * Filters the audio shortcode output. * * @since 3.6.0 * * @param string $html Audio shortcode HTML output. * @param array $atts Array of audio shortcode attributes. * @param string $audio Audio file. * @param int $post_id Post ID. * @param string $library Media library used for the audio shortcode. / return apply_filters( 'wp_audio_shortcode', $html, $atts, $audio, $post_id, $library ); } add_shortcode( 'audio', 'wp_audio_shortcode' ); /* * Returns a filtered list of supported video formats. * * @since 3.6.0 * * @return string[] List of supported video formats. / function wp_get_video_extensions() { /* * Filters the list of supported video formats. * * @since 3.6.0 * * @param string[] $extensions An array of supported video formats. Defaults are * 'mp4', 'm4v', 'webm', 'ogv', 'flv'. / return apply_filters( 'wp_video_extensions', array( 'mp4', 'm4v', 'webm', 'ogv', 'flv' ) ); } /* * Builds the Video shortcode output. * * This implements the functionality of the Video Shortcode for displaying * WordPress mp4s in a post. * * @since 3.6.0 * * @global int $content_width * * @param array $attr { * Attributes of the shortcode. * * @type string $src URL to the source of the video file. Default empty. * @type int $height Height of the video embed in pixels. Default 360. * @type int $width Width of the video embed in pixels. Default $content_width or 640. * @type string $poster The 'poster' attribute for the `<video>` element. Default empty. * @type string $loop The 'loop' attribute for the `<video>` element. Default empty. * @type string $autoplay The 'autoplay' attribute for the `<video>` element. Default empty. * @type string $muted The 'muted' attribute for the `<video>` element. Default false. * @type string $preload The 'preload' attribute for the `<video>` element. * Default 'metadata'. * @type string $class The 'class' attribute for the `<video>` element. * Default 'wp-video-shortcode'. * } * @param string $content Shortcode content. * @return string\|void HTML content to display video. / function wp_video_shortcode( $attr, $content = '' ) { global $content_width; $post_id = get_post() ? get_the_ID() : 0; static $instance = 0; ++$instance; /* * Filters the default video shortcode output. * * If the filtered output isn't empty, it will be used instead of generating * the default video template. * * @since 3.6.0 * * @see wp_video_shortcode() * * @param string $html Empty variable to be replaced with shortcode markup. * @param array $attr Attributes of the shortcode. See {@see wp_video_shortcode()}. * @param string $content Video shortcode content. * @param int $instance Unique numeric ID of this video shortcode instance. / $override = apply_filters( 'wp_video_shortcode_override', '', $attr, $content, $instance ); if ( '' !== $override ) { return $override; } $video = null; $default_types = wp_get_video_extensions(); $defaults_atts = array( 'src' => '', 'poster' => '', 'loop' => '', 'autoplay' => '', 'muted' => 'false', 'preload' => 'metadata', 'width' => 640, 'height' => 360, 'class' => 'wp-video-shortcode', ); foreach ( $default_types as $type ) { $defaults_atts[ $type ] = ''; } $atts = shortcode_atts( $defaults_atts, $attr, 'video' ); if ( is_admin() ) { // Shrink the video so it isn't huge in the admin. if ( $atts['width'] > $defaults_atts['width'] ) { $atts['height'] = round( ( $atts['height'] $defaults_atts['width'] ) / $atts['width'] ); $atts['width'] = $defaults_atts['width']; } } else { // If the video is bigger than the theme. if ( ! empty( $content_width ) && $atts['width'] > $content_width ) { $atts['height'] = round( ( $atts['height'] * $content_width ) / $atts['width'] ); $atts['width'] = $content_width; } } $is_vimeo = false; $is_youtube = false; $yt_pattern = '#^https?://(?:www\.)?(?:youtube\.com/watch\|youtu\.be/)#'; $vimeo_pattern = '#^https?://(.+\.)?vimeo\.com/.#'; $primary = false; if ( ! empty( $atts['src'] ) ) { $is_vimeo = ( preg_match( $vimeo_pattern, $atts['src'] ) ); $is_youtube = ( preg_match( $yt_pattern, $atts['src'] ) ); if ( ! $is_youtube && ! $is_vimeo ) { $type = wp_check_filetype( $atts['src'], wp_get_mime_types() ); if ( ! in_array( strtolower( $type['ext'] ), $default_types, true ) ) { return sprintf( '<a class="wp-embedded-video" href="%s">%s</a>', esc_url( $atts['src'] ), esc_html( $atts['src'] ) ); } } if ( $is_vimeo ) { wp_enqueue_script( 'mediaelement-vimeo' ); } $primary = true; array_unshift( $default_types, 'src' ); } else { foreach ( $default_types as $ext ) { if ( ! empty( $atts[ $ext ] ) ) { $type = wp_check_filetype( $atts[ $ext ], wp_get_mime_types() ); if ( strtolower( $type['ext'] ) === $ext ) { $primary = true; } } } } if ( ! $primary ) { $videos = get_attached_media( 'video', $post_id ); if ( empty( $videos ) ) { return; } $video = reset( $videos ); $atts['src'] = wp_get_attachment_url( $video->ID ); if ( empty( $atts['src'] ) ) { return; } array_unshift( $default_types, 'src' ); } /* * Filters the media library used for the video shortcode. * * @since 3.6.0 * * @param string $library Media library used for the video shortcode. / $library = apply_filters( 'wp_video_shortcode_library', 'mediaelement' ); if ( 'mediaelement' === $library && did_action( 'init' ) ) { wp_enqueue_style( 'wp-mediaelement' ); wp_enqueue_script( 'wp-mediaelement' ); wp_enqueue_script( 'mediaelement-vimeo' ); } / * MediaElement.js has issues with some URL formats for Vimeo and YouTube, * so update the URL to prevent the ME.js player from breaking. / if ( 'mediaelement' === $library ) { if ( $is_youtube ) { // Remove `feature` query arg and force SSL - see #40866. $atts['src'] = remove_query_arg( 'feature', $atts['src'] ); $atts['src'] = set_url_scheme( $atts['src'], 'https' ); } elseif ( $is_vimeo ) { // Remove all query arguments and force SSL - see #40866. $parsed_vimeo_url = wp_parse_url( $atts['src'] ); $vimeo_src = 'https://' . $parsed_vimeo_url['host'] . $parsed_vimeo_url['path']; // Add loop param for mejs bug - see #40977, not needed after #39686. $loop = $atts['loop'] ? '1' : '0'; $atts['src'] = add_query_arg( 'loop', $loop, $vimeo_src ); } } /* * Filters the class attribute for the video shortcode output container. * * @since 3.6.0 * @since 4.9.0 The `$atts` parameter was added. * * @param string $class CSS class or list of space-separated classes. * @param array $atts Array of video shortcode attributes. / $atts['class'] = apply_filters( 'wp_video_shortcode_class', $atts['class'], $atts ); $html_atts = array( 'class' => $atts['class'], 'id' => sprintf( 'video-%d-%d', $post_id, $instance ), 'width' => absint( $atts['width'] ), 'height' => absint( $atts['height'] ), 'poster' => esc_url( $atts['poster'] ), 'loop' => wp_validate_boolean( $atts['loop'] ), 'autoplay' => wp_validate_boolean( $atts['autoplay'] ), 'muted' => wp_validate_boolean( $atts['muted'] ), 'preload' => $atts['preload'], ); // These ones should just be omitted altogether if they are blank. foreach ( array( 'poster', 'loop', 'autoplay', 'preload', 'muted' ) as $a ) { if ( empty( $html_atts[ $a ] ) ) { unset( $html_atts[ $a ] ); } } $attr_strings = array(); foreach ( $html_atts as $attribute_name => $attribute_value ) { if ( in_array( $attribute_name, array( 'loop', 'autoplay', 'muted' ), true ) && true === $attribute_value ) { // Add boolean attributes without their value for true. $attr_strings[] = esc_attr( $attribute_name ); } elseif ( 'preload' === $attribute_name && ! empty( $attribute_value ) ) { // Handle the preload attribute with specific allowed values. $allowed_preload_values = array( 'none', 'metadata', 'auto' ); if ( in_array( $attribute_value, $allowed_preload_values, true ) ) { $attr_strings[] = sprintf( '%s="%s"', esc_attr( $attribute_name ), esc_attr( $attribute_value ) ); } } elseif ( ! empty( $attribute_value ) ) { // For non-boolean attributes, add them with their value. $attr_strings[] = sprintf( '%s="%s"', esc_attr( $attribute_name ), esc_attr( $attribute_value ) ); } } $html = ''; if ( 'mediaelement' === $library && 1 === $instance ) { $html .= "<!--[if lt IE 9]><script>document.createElement('video');</script><![endif]-->\n"; } $html .= sprintf( '<video %s controls="controls">', implode( ' ', $attr_strings ) ); $fileurl = ''; $source = '<source type="%s" src="%s" />'; foreach ( $default_types as $fallback ) { if ( ! empty( $atts[ $fallback ] ) ) { if ( empty( $fileurl ) ) { $fileurl = $atts[ $fallback ]; } if ( 'src' === $fallback && $is_youtube ) { $type = array( 'type' => 'video/youtube' ); } elseif ( 'src' === $fallback && $is_vimeo ) { $type = array( 'type' => 'video/vimeo' ); } else { $type = wp_check_filetype( $atts[ $fallback ], wp_get_mime_types() ); } $url = add_query_arg( '_', $instance, $atts[ $fallback ] ); $html .= sprintf( $source, $type['type'], esc_url( $url ) ); } } if ( ! empty( $content ) ) { if ( str_contains( $content, "\n" ) ) { $content = str_replace( array( "\r\n", "\n", "\t" ), '', $content ); } $html .= trim( $content ); } if ( 'mediaelement' === $library ) { $html .= wp_mediaelement_fallback( $fileurl ); } $html .= '</video>'; $width_rule = ''; if ( ! empty( $atts['width'] ) ) { $width_rule = sprintf( 'width: %dpx;', $atts['width'] ); } $output = sprintf( '<div style="%s" class="wp-video">%s</div>', $width_rule, $html ); /* * Filters the output of the video shortcode. * * @since 3.6.0 * * @param string $output Video shortcode HTML output. * @param array $atts Array of video shortcode attributes. * @param string $video Video file. * @param int $post_id Post ID. * @param string $library Media library used for the video shortcode. / return apply_filters( 'wp_video_shortcode', $output, $atts, $video, $post_id, $library ); } add_shortcode( 'video', 'wp_video_shortcode' ); /* * Gets the previous image link that has the same post parent. * * @since 5.8.0 * * @see get_adjacent_image_link() * * @param string\|int[] $size Optional. Image size. Accepts any registered image size name, or an array * of width and height values in pixels (in that order). Default 'thumbnail'. * @param string\|false $text Optional. Link text. Default false. * @return string Markup for previous image link. / function get_previous_image_link( $size = 'thumbnail', $text = false ) { return get_adjacent_image_link( true, $size, $text ); } /* * Displays previous image link that has the same post parent. * * @since 2.5.0 * * @param string\|int[] $size Optional. Image size. Accepts any registered image size name, or an array * of width and height values in pixels (in that order). Default 'thumbnail'. * @param string\|false $text Optional. Link text. Default false. / function previous_image_link( $size = 'thumbnail', $text = false ) { echo get_previous_image_link( $size, $text ); } /* * Gets the next image link that has the same post parent. * * @since 5.8.0 * * @see get_adjacent_image_link() * * @param string\|int[] $size Optional. Image size. Accepts any registered image size name, or an array * of width and height values in pixels (in that order). Default 'thumbnail'. * @param string\|false $text Optional. Link text. Default false. * @return string Markup for next image link. / function get_next_image_link( $size = 'thumbnail', $text = false ) { return get_adjacent_image_link( false, $size, $text ); } /* * Displays next image link that has the same post parent. * * @since 2.5.0 * * @param string\|int[] $size Optional. Image size. Accepts any registered image size name, or an array * of width and height values in pixels (in that order). Default 'thumbnail'. * @param string\|false $text Optional. Link text. Default false. / function next_image_link( $size = 'thumbnail', $text = false ) { echo get_next_image_link( $size, $text ); } /* * Gets the next or previous image link that has the same post parent. * * Retrieves the current attachment object from the $post global. * * @since 5.8.0 * * @param bool $prev Optional. Whether to display the next (false) or previous (true) link. Default true. * @param string\|int[] $size Optional. Image size. Accepts any registered image size name, or an array * of width and height values in pixels (in that order). Default 'thumbnail'. * @param bool $text Optional. Link text. Default false. * @return string Markup for image link. / function get_adjacent_image_link( $prev = true, $size = 'thumbnail', $text = false ) { $post = get_post(); $attachments = array_values( get_children( array( 'post_parent' => $post->post_parent, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => 'ASC', 'orderby' => 'menu_order ID', ) ) ); foreach ( $attachments as $k => $attachment ) { if ( (int) $attachment->ID === (int) $post->ID ) { break; } } $output = ''; $attachment_id = 0; if ( $attachments ) { $k = $prev ? $k - 1 : $k + 1; if ( isset( $attachments[ $k ] ) ) { $attachment_id = $attachments[ $k ]->ID; $attr = array( 'alt' => get_the_title( $attachment_id ) ); $output = wp_get_attachment_link( $attachment_id, $size, true, false, $text, $attr ); } } $adjacent = $prev ? 'previous' : 'next'; /* * Filters the adjacent image link. * * The dynamic portion of the hook name, `$adjacent`, refers to the type of adjacency, * either 'next', or 'previous'. * * Possible hook names include: * * - `next_image_link` * - `previous_image_link` * * @since 3.5.0 * * @param string $output Adjacent image HTML markup. * @param int $attachment_id Attachment ID * @param string\|int[] $size Requested image size. Can be any registered image size name, or * an array of width and height values in pixels (in that order). * @param string $text Link text. / return apply_filters( "{$adjacent}_image_link", $output, $attachment_id, $size, $text ); } /* * Displays next or previous image link that has the same post parent. * * Retrieves the current attachment object from the $post global. * * @since 2.5.0 * * @param bool $prev Optional. Whether to display the next (false) or previous (true) link. Default true. * @param string\|int[] $size Optional. Image size. Accepts any registered image size name, or an array * of width and height values in pixels (in that order). Default 'thumbnail'. * @param bool $text Optional. Link text. Default false. / function adjacent_image_link( $prev = true, $size = 'thumbnail', $text = false ) { echo get_adjacent_image_link( $prev, $size, $text ); } /* * Retrieves taxonomies attached to given the attachment. * * @since 2.5.0 * @since 4.7.0 Introduced the `$output` parameter. * * @param int\|array\|object $attachment Attachment ID, data array, or data object. * @param string $output Output type. 'names' to return an array of taxonomy names, * or 'objects' to return an array of taxonomy objects. * Default is 'names'. * @return string[]\|WP_Taxonomy[] List of taxonomies or taxonomy names. Empty array on failure. / function get_attachment_taxonomies( $attachment, $output = 'names' ) { if ( is_int( $attachment ) ) { $attachment = get_post( $attachment ); } elseif ( is_array( $attachment ) ) { $attachment = (object) $attachment; } if ( ! is_object( $attachment ) ) { return array(); } $file = get_attached_file( $attachment->ID ); $filename = wp_basename( $file ); $objects = array( 'attachment' ); if ( str_contains( $filename, '.' ) ) { $objects[] = 'attachment:' . substr( $filename, strrpos( $filename, '.' ) + 1 ); } if ( ! empty( $attachment->post_mime_type ) ) { $objects[] = 'attachment:' . $attachment->post_mime_type; if ( str_contains( $attachment->post_mime_type, '/' ) ) { foreach ( explode( '/', $attachment->post_mime_type ) as $token ) { if ( ! empty( $token ) ) { $objects[] = "attachment:$token"; } } } } $taxonomies = array(); foreach ( $objects as $object ) { $taxes = get_object_taxonomies( $object, $output ); if ( $taxes ) { $taxonomies = array_merge( $taxonomies, $taxes ); } } if ( 'names' === $output ) { $taxonomies = array_unique( $taxonomies ); } return $taxonomies; } /* * Retrieves all of the taxonomies that are registered for attachments. * * Handles mime-type-specific taxonomies such as attachment:image and attachment:video. * * @since 3.5.0 * * @see get_taxonomies() * * @param string $output Optional. The type of taxonomy output to return. Accepts 'names' or 'objects'. * Default 'names'. * @return string[]\|WP_Taxonomy[] Array of names or objects of registered taxonomies for attachments. / function get_taxonomies_for_attachments( $output = 'names' ) { $taxonomies = array(); foreach ( get_taxonomies( array(), 'objects' ) as $taxonomy ) { foreach ( $taxonomy->object_type as $object_type ) { if ( 'attachment' === $object_type \|\| str_starts_with( $object_type, 'attachment:' ) ) { if ( 'names' === $output ) { $taxonomies[] = $taxonomy->name; } else { $taxonomies[ $taxonomy->name ] = $taxonomy; } break; } } } return $taxonomies; } /* * Determines whether the value is an acceptable type for GD image functions. * * In PHP 8.0, the GD extension uses GdImage objects for its data structures. * This function checks if the passed value is either a GdImage object instance * or a resource of type `gd`. Any other type will return false. * * @since 5.6.0 * * @param resource\|GdImage\|false $image A value to check the type for. * @return bool True if `$image` is either a GD image resource or a GdImage instance, * false otherwise. / function is_gd_image( $image ) { if ( $image instanceof GdImage \|\| is_resource( $image ) && 'gd' === get_resource_type( $image ) ) { return true; } return false; } /* * Creates a new GD image resource with transparency support. * * @todo Deprecate if possible. * * @since 2.9.0 * * @param int $width Image width in pixels. * @param int $height Image height in pixels. * @return resource\|GdImage\|false The GD image resource or GdImage instance on success. * False on failure. / function wp_imagecreatetruecolor( $width, $height ) { $img = imagecreatetruecolor( $width, $height ); if ( is_gd_image( $img ) && function_exists( 'imagealphablending' ) && function_exists( 'imagesavealpha' ) ) { imagealphablending( $img, false ); imagesavealpha( $img, true ); } return $img; } /* * Based on a supplied width/height example, returns the biggest possible dimensions based on the max width/height. * * @since 2.9.0 * * @see wp_constrain_dimensions() * * @param int $example_width The width of an example embed. * @param int $example_height The height of an example embed. * @param int $max_width The maximum allowed width. * @param int $max_height The maximum allowed height. * @return int[] { * An array of maximum width and height values. * * @type int $0 The maximum width in pixels. * @type int $1 The maximum height in pixels. * } / function wp_expand_dimensions( $example_width, $example_height, $max_width, $max_height ) { $example_width = (int) $example_width; $example_height = (int) $example_height; $max_width = (int) $max_width; $max_height = (int) $max_height; return wp_constrain_dimensions( $example_width 1000000, $example_height * 1000000, $max_width, $max_height ); } /** * Determines the maximum upload size allowed in php.ini. * * @since 2.5.0 * * @return int Allowed upload size. / function wp_max_upload_size() { $u_bytes = wp_convert_hr_to_bytes( ini_get( 'upload_max_filesize' ) ); $p_bytes = wp_convert_hr_to_bytes( ini_get( 'post_max_size' ) ); /* * Filters the maximum upload size allowed in php.ini. * * @since 2.5.0 * * @param int $size Max upload size limit in bytes. * @param int $u_bytes Maximum upload filesize in bytes. * @param int $p_bytes Maximum size of POST data in bytes. / return apply_filters( 'upload_size_limit', min( $u_bytes, $p_bytes ), $u_bytes, $p_bytes ); } /* * Returns a WP_Image_Editor instance and loads file into it. * * @since 3.5.0 * * @param string $path Path to the file to load. * @param array $args Optional. Additional arguments for retrieving the image editor. * Default empty array. * @return WP_Image_Editor\|WP_Error The WP_Image_Editor object on success, * a WP_Error object otherwise. / function wp_get_image_editor( $path, $args = array() ) { $args['path'] = $path; // If the mime type is not set in args, try to extract and set it from the file. if ( ! isset( $args['mime_type'] ) ) { $file_info = wp_check_filetype( $args['path'] ); / * If $file_info['type'] is false, then we let the editor attempt to * figure out the file type, rather than forcing a failure based on extension. / if ( isset( $file_info ) && $file_info['type'] ) { $args['mime_type'] = $file_info['type']; } } // Check and set the output mime type mapped to the input type. if ( isset( $args['mime_type'] ) ) { $output_format = wp_get_image_editor_output_format( $path, $args['mime_type'] ); if ( isset( $output_format[ $args['mime_type'] ] ) ) { $args['output_mime_type'] = $output_format[ $args['mime_type'] ]; } } $implementation = _wp_image_editor_choose( $args ); if ( $implementation ) { $editor = new $implementation( $path ); $loaded = $editor->load(); if ( is_wp_error( $loaded ) ) { return $loaded; } return $editor; } return new WP_Error( 'image_no_editor', __( 'No editor could be selected.' ) ); } /* * Tests whether there is an editor that supports a given mime type or methods. * * @since 3.5.0 * * @param string\|array $args Optional. Array of arguments to retrieve the image editor supports. * Default empty array. * @return bool True if an eligible editor is found; false otherwise. / function wp_image_editor_supports( $args = array() ) { return (bool) _wp_image_editor_choose( $args ); } /* * Tests which editors are capable of supporting the request. * * @ignore * @since 3.5.0 * * @param array $args Optional. Array of arguments for choosing a capable editor. Default empty array. * @return string\|false Class name for the first editor that claims to support the request. * False if no editor claims to support the request. / function _wp_image_editor_choose( $args = array() ) { require_once ABSPATH . WPINC . '/class-wp-image-editor.php'; require_once ABSPATH . WPINC . '/class-wp-image-editor-gd.php'; require_once ABSPATH . WPINC . '/class-wp-image-editor-imagick.php'; require_once ABSPATH . WPINC . '/class-avif-info.php'; /* * Filters the list of image editing library classes. * * @since 3.5.0 * * @param string[] $image_editors Array of available image editor class names. Defaults are * 'WP_Image_Editor_Imagick', 'WP_Image_Editor_GD'. / $implementations = apply_filters( 'wp_image_editors', array( 'WP_Image_Editor_Imagick', 'WP_Image_Editor_GD' ) ); $editors = wp_cache_get( 'wp_image_editor_choose', 'image_editor' ); if ( ! is_array( $editors ) ) { $editors = array(); } // Cache the chosen editor implementation based on specific args and available implementations. $cache_key = md5( serialize( array( $args, $implementations ) ) ); if ( isset( $editors[ $cache_key ] ) ) { return $editors[ $cache_key ]; } // Assume no support until a capable implementation is identified. $editor = false; foreach ( $implementations as $implementation ) { if ( ! call_user_func( array( $implementation, 'test' ), $args ) ) { continue; } // Implementation should support the passed mime type. if ( isset( $args['mime_type'] ) && ! call_user_func( array( $implementation, 'supports_mime_type' ), $args['mime_type'] ) ) { continue; } // Implementation should support requested methods. if ( isset( $args['methods'] ) && array_diff( $args['methods'], get_class_methods( $implementation ) ) ) { continue; } // Implementation should ideally support the output mime type as well if set and different than the passed type. if ( isset( $args['mime_type'] ) && isset( $args['output_mime_type'] ) && $args['mime_type'] !== $args['output_mime_type'] && ! call_user_func( array( $implementation, 'supports_mime_type' ), $args['output_mime_type'] ) ) { / * This implementation supports the input type but not the output type. * Keep looking to see if we can find an implementation that supports both. / $editor = $implementation; continue; } // Favor the implementation that supports both input and output mime types. $editor = $implementation; break; } $editors[ $cache_key ] = $editor; wp_cache_set( 'wp_image_editor_choose', $editors, 'image_editor', DAY_IN_SECONDS ); return $editor; } /* * Prints default Plupload arguments. * * @since 3.4.0 / function wp_plupload_default_settings() { $wp_scripts = wp_scripts(); $data = $wp_scripts->get_data( 'wp-plupload', 'data' ); if ( $data && str_contains( $data, '_wpPluploadSettings' ) ) { return; } $max_upload_size = wp_max_upload_size(); $allowed_extensions = array_keys( get_allowed_mime_types() ); $extensions = array(); foreach ( $allowed_extensions as $extension ) { $extensions = array_merge( $extensions, explode( '\|', $extension ) ); } / * Since 4.9 the `runtimes` setting is hardcoded in our version of Plupload to `html5,html4`, * and the `flash_swf_url` and `silverlight_xap_url` are not used. / $defaults = array( 'file_data_name' => 'async-upload', // Key passed to $_FILE. 'url' => admin_url( 'async-upload.php', 'relative' ), 'filters' => array( 'max_file_size' => $max_upload_size . 'b', 'mime_types' => array( array( 'extensions' => implode( ',', $extensions ) ) ), ), ); / * Currently only iOS Safari supports multiple files uploading, * but iOS 7.x has a bug that prevents uploading of videos when enabled. * See #29602. / if ( wp_is_mobile() && str_contains( $_SERVER['HTTP_USER_AGENT'], 'OS 7_' ) && str_contains( $_SERVER['HTTP_USER_AGENT'], 'like Mac OS X' ) ) { $defaults['multi_selection'] = false; } // Check if WebP images can be edited. if ( ! wp_image_editor_supports( array( 'mime_type' => 'image/webp' ) ) ) { $defaults['webp_upload_error'] = true; } // Check if AVIF images can be edited. if ( ! wp_image_editor_supports( array( 'mime_type' => 'image/avif' ) ) ) { $defaults['avif_upload_error'] = true; } // Check if HEIC images can be edited. if ( ! wp_image_editor_supports( array( 'mime_type' => 'image/heic' ) ) ) { $defaults['heic_upload_error'] = true; } /* * Filters the Plupload default settings. * * @since 3.4.0 * * @param array $defaults Default Plupload settings array. / $defaults = apply_filters( 'plupload_default_settings', $defaults ); $params = array( 'action' => 'upload-attachment', ); /* * Filters the Plupload default parameters. * * @since 3.4.0 * * @param array $params Default Plupload parameters array. / $params = apply_filters( 'plupload_default_params', $params ); $params['_wpnonce'] = wp_create_nonce( 'media-form' ); $defaults['multipart_params'] = $params; $settings = array( 'defaults' => $defaults, 'browser' => array( 'mobile' => wp_is_mobile(), 'supported' => _device_can_upload(), ), 'limitExceeded' => is_multisite() && ! is_upload_space_available(), ); $script = 'var _wpPluploadSettings = ' . wp_json_encode( $settings ) . ';'; if ( $data ) { $script = "$data\n$script"; } $wp_scripts->add_data( 'wp-plupload', 'data', $script ); } /* * Prepares an attachment post object for JS, where it is expected * to be JSON-encoded and fit into an Attachment model. * * @since 3.5.0 * * @param int\|WP_Post $attachment Attachment ID or object. * @return array\|void { * Array of attachment details, or void if the parameter does not correspond to an attachment. * * @type string $alt Alt text of the attachment. * @type string $author ID of the attachment author, as a string. * @type string $authorName Name of the attachment author. * @type string $caption Caption for the attachment. * @type array $compat Containing item and meta. * @type string $context Context, whether it's used as the site icon for example. * @type int $date Uploaded date, timestamp in milliseconds. * @type string $dateFormatted Formatted date (e.g. June 29, 2018). * @type string $description Description of the attachment. * @type string $editLink URL to the edit page for the attachment. * @type string $filename File name of the attachment. * @type string $filesizeHumanReadable Filesize of the attachment in human readable format (e.g. 1 MB). * @type int $filesizeInBytes Filesize of the attachment in bytes. * @type int $height If the attachment is an image, represents the height of the image in pixels. * @type string $icon Icon URL of the attachment (e.g. /wp-includes/images/media/archive.png). * @type int $id ID of the attachment. * @type string $link URL to the attachment. * @type int $menuOrder Menu order of the attachment post. * @type array $meta Meta data for the attachment. * @type string $mime Mime type of the attachment (e.g. image/jpeg or application/zip). * @type int $modified Last modified, timestamp in milliseconds. * @type string $name Name, same as title of the attachment. * @type array $nonces Nonces for update, delete and edit. * @type string $orientation If the attachment is an image, represents the image orientation * (landscape or portrait). * @type array $sizes If the attachment is an image, contains an array of arrays * for the images sizes: thumbnail, medium, large, and full. * @type string $status Post status of the attachment (usually 'inherit'). * @type string $subtype Mime subtype of the attachment (usually the last part, e.g. jpeg or zip). * @type string $title Title of the attachment (usually slugified file name without the extension). * @type string $type Type of the attachment (usually first part of the mime type, e.g. image). * @type int $uploadedTo Parent post to which the attachment was uploaded. * @type string $uploadedToLink URL to the edit page of the parent post of the attachment. * @type string $uploadedToTitle Post title of the parent of the attachment. * @type string $url Direct URL to the attachment file (from wp-content). * @type int $width If the attachment is an image, represents the width of the image in pixels. * } / function wp_prepare_attachment_for_js( $attachment ) { $attachment = get_post( $attachment ); if ( ! $attachment ) { return; } if ( 'attachment' !== $attachment->post_type ) { return; } $meta = wp_get_attachment_metadata( $attachment->ID ); if ( str_contains( $attachment->post_mime_type, '/' ) ) { list( $type, $subtype ) = explode( '/', $attachment->post_mime_type ); } else { list( $type, $subtype ) = array( $attachment->post_mime_type, '' ); } $attachment_url = wp_get_attachment_url( $attachment->ID ); $base_url = str_replace( wp_basename( $attachment_url ), '', $attachment_url ); $response = array( 'id' => $attachment->ID, 'title' => $attachment->post_title, 'filename' => wp_basename( get_attached_file( $attachment->ID ) ), 'url' => $attachment_url, 'link' => get_attachment_link( $attachment->ID ), 'alt' => get_post_meta( $attachment->ID, '_wp_attachment_image_alt', true ), 'author' => $attachment->post_author, 'description' => $attachment->post_content, 'caption' => $attachment->post_excerpt, 'name' => $attachment->post_name, 'status' => $attachment->post_status, 'uploadedTo' => $attachment->post_parent, 'date' => strtotime( $attachment->post_date_gmt ) 1000, 'modified' => strtotime( $attachment->post_modified_gmt ) * 1000, 'menuOrder' => $attachment->menu_order, 'mime' => $attachment->post_mime_type, 'type' => $type, 'subtype' => $subtype, 'icon' => wp_mime_type_icon( $attachment->ID, '.svg' ), 'dateFormatted' => mysql2date( __( 'F j, Y' ), $attachment->post_date ), 'nonces' => array( 'update' => false, 'delete' => false, 'edit' => false, ), 'editLink' => false, 'meta' => false, ); $author = new WP_User( $attachment->post_author ); if ( $author->exists() ) { $author_name = $author->display_name ? $author->display_name : $author->nickname; $response['authorName'] = html_entity_decode( $author_name, ENT_QUOTES, get_bloginfo( 'charset' ) ); $response['authorLink'] = get_edit_user_link( $author->ID ); } else { $response['authorName'] = __( '(no author)' ); } if ( $attachment->post_parent ) { $post_parent = get_post( $attachment->post_parent ); if ( $post_parent ) { $response['uploadedToTitle'] = $post_parent->post_title ? $post_parent->post_title : __( '(no title)' ); $response['uploadedToLink'] = get_edit_post_link( $attachment->post_parent, 'raw' ); } } $attached_file = get_attached_file( $attachment->ID ); if ( isset( $meta['filesize'] ) ) { $bytes = $meta['filesize']; } elseif ( file_exists( $attached_file ) ) { $bytes = wp_filesize( $attached_file ); } else { $bytes = ''; } if ( $bytes ) { $response['filesizeInBytes'] = $bytes; $response['filesizeHumanReadable'] = size_format( $bytes ); } $context = get_post_meta( $attachment->ID, '_wp_attachment_context', true ); $response['context'] = ( $context ) ? $context : ''; if ( current_user_can( 'edit_post', $attachment->ID ) ) { $response['nonces']['update'] = wp_create_nonce( 'update-post_' . $attachment->ID ); $response['nonces']['edit'] = wp_create_nonce( 'image_editor-' . $attachment->ID ); $response['editLink'] = get_edit_post_link( $attachment->ID, 'raw' ); } if ( current_user_can( 'delete_post', $attachment->ID ) ) { $response['nonces']['delete'] = wp_create_nonce( 'delete-post_' . $attachment->ID ); } if ( $meta && ( 'image' === $type \|\| ! empty( $meta['sizes'] ) ) ) { $sizes = array(); /** This filter is documented in wp-admin/includes/media.php / $possible_sizes = apply_filters( 'image_size_names_choose', array( 'thumbnail' => __( 'Thumbnail' ), 'medium' => __( 'Medium' ), 'large' => __( 'Large' ), 'full' => __( 'Full Size' ), ) ); unset( $possible_sizes['full'] ); / * Loop through all potential sizes that may be chosen. Try to do this with some efficiency. * First: run the image_downsize filter. If it returns something, we can use its data. * If the filter does not return something, then image_downsize() is just an expensive way * to check the image metadata, which we do second. / foreach ( $possible_sizes as $size => $label ) { /* This filter is documented in wp-includes/media.php / $downsize = apply_filters( 'image_downsize', false, $attachment->ID, $size ); if ( $downsize ) { if ( empty( $downsize[3] ) ) { continue; } $sizes[ $size ] = array( 'height' => $downsize[2], 'width' => $downsize[1], 'url' => $downsize[0], 'orientation' => $downsize[2] > $downsize[1] ? 'portrait' : 'landscape', ); } elseif ( isset( $meta['sizes'][ $size ] ) ) { // Nothing from the filter, so consult image metadata if we have it. $size_meta = $meta['sizes'][ $size ]; / * We have the actual image size, but might need to further constrain it if content_width is narrower. * Thumbnail, medium, and full sizes are also checked against the site's height/width options. / list( $width, $height ) = image_constrain_size_for_editor( $size_meta['width'], $size_meta['height'], $size, 'edit' ); $sizes[ $size ] = array( 'height' => $height, 'width' => $width, 'url' => $base_url . $size_meta['file'], 'orientation' => $height > $width ? 'portrait' : 'landscape', ); } } if ( 'image' === $type ) { if ( ! empty( $meta['original_image'] ) ) { $response['originalImageURL'] = wp_get_original_image_url( $attachment->ID ); $response['originalImageName'] = wp_basename( wp_get_original_image_path( $attachment->ID ) ); } $sizes['full'] = array( 'url' => $attachment_url ); if ( isset( $meta['height'], $meta['width'] ) ) { $sizes['full']['height'] = $meta['height']; $sizes['full']['width'] = $meta['width']; $sizes['full']['orientation'] = $meta['height'] > $meta['width'] ? 'portrait' : 'landscape'; } $response = array_merge( $response, $sizes['full'] ); } elseif ( $meta['sizes']['full']['file'] ) { $sizes['full'] = array( 'url' => $base_url . $meta['sizes']['full']['file'], 'height' => $meta['sizes']['full']['height'], 'width' => $meta['sizes']['full']['width'], 'orientation' => $meta['sizes']['full']['height'] > $meta['sizes']['full']['width'] ? 'portrait' : 'landscape', ); } $response = array_merge( $response, array( 'sizes' => $sizes ) ); } if ( $meta && 'video' === $type ) { if ( isset( $meta['width'] ) ) { $response['width'] = (int) $meta['width']; } if ( isset( $meta['height'] ) ) { $response['height'] = (int) $meta['height']; } } if ( $meta && ( 'audio' === $type \|\| 'video' === $type ) ) { if ( isset( $meta['length_formatted'] ) ) { $response['fileLength'] = $meta['length_formatted']; $response['fileLengthHumanReadable'] = human_readable_duration( $meta['length_formatted'] ); } $response['meta'] = array(); foreach ( wp_get_attachment_id3_keys( $attachment, 'js' ) as $key => $label ) { $response['meta'][ $key ] = false; if ( ! empty( $meta[ $key ] ) ) { $response['meta'][ $key ] = $meta[ $key ]; } } $id = get_post_thumbnail_id( $attachment->ID ); if ( ! empty( $id ) ) { list( $src, $width, $height ) = wp_get_attachment_image_src( $id, 'full' ); $response['image'] = compact( 'src', 'width', 'height' ); list( $src, $width, $height ) = wp_get_attachment_image_src( $id, 'thumbnail' ); $response['thumb'] = compact( 'src', 'width', 'height' ); } else { $src = wp_mime_type_icon( $attachment->ID, '.svg' ); $width = 48; $height = 64; $response['image'] = compact( 'src', 'width', 'height' ); $response['thumb'] = compact( 'src', 'width', 'height' ); } } if ( function_exists( 'get_compat_media_markup' ) ) { $response['compat'] = get_compat_media_markup( $attachment->ID, array( 'in_modal' => true ) ); } if ( function_exists( 'get_media_states' ) ) { $media_states = get_media_states( $attachment ); if ( ! empty( $media_states ) ) { $response['mediaStates'] = implode( ', ', $media_states ); } } /* * Filters the attachment data prepared for JavaScript. * * @since 3.5.0 * * @param array $response Array of prepared attachment data. See {@see wp_prepare_attachment_for_js()}. * @param WP_Post $attachment Attachment object. * @param array\|false $meta Array of attachment meta data, or false if there is none. / return apply_filters( 'wp_prepare_attachment_for_js', $response, $attachment, $meta ); } /* * Enqueues all scripts, styles, settings, and templates necessary to use * all media JS APIs. * * @since 3.5.0 * * @global int $content_width * @global wpdb $wpdb WordPress database abstraction object. * @global WP_Locale $wp_locale WordPress date and time locale object. * * @param array $args { * Arguments for enqueuing media scripts. * * @type int\|WP_Post $post Post ID or post object. * } / function wp_enqueue_media( $args = array() ) { // Enqueue me just once per page, please. if ( did_action( 'wp_enqueue_media' ) ) { return; } global $content_width, $wpdb, $wp_locale; $defaults = array( 'post' => null, ); $args = wp_parse_args( $args, $defaults ); / * We're going to pass the old thickbox media tabs to `media_upload_tabs` * to ensure plugins will work. We will then unset those tabs. / $tabs = array( // handler action suffix => tab label 'type' => '', 'type_url' => '', 'gallery' => '', 'library' => '', ); /* This filter is documented in wp-admin/includes/media.php / $tabs = apply_filters( 'media_upload_tabs', $tabs ); unset( $tabs['type'], $tabs['type_url'], $tabs['gallery'], $tabs['library'] ); $props = array( 'link' => get_option( 'image_default_link_type' ), // DB default is 'file'. 'align' => get_option( 'image_default_align' ), // Empty default. 'size' => get_option( 'image_default_size' ), // Empty default. ); $exts = array_merge( wp_get_audio_extensions(), wp_get_video_extensions() ); $mimes = get_allowed_mime_types(); $ext_mimes = array(); foreach ( $exts as $ext ) { foreach ( $mimes as $ext_preg => $mime_match ) { if ( preg_match( '#' . $ext . '#i', $ext_preg ) ) { $ext_mimes[ $ext ] = $mime_match; break; } } } /* * Allows showing or hiding the "Create Audio Playlist" button in the media library. * * By default, the "Create Audio Playlist" button will always be shown in * the media library. If this filter returns `null`, a query will be run * to determine whether the media library contains any audio items. This * was the default behavior prior to version 4.8.0, but this query is * expensive for large media libraries. * * @since 4.7.4 * @since 4.8.0 The filter's default value is `true` rather than `null`. * * @link https://core.trac.wordpress.org/ticket/31071 * * @param bool\|null $show Whether to show the button, or `null` to decide based * on whether any audio files exist in the media library. / $show_audio_playlist = apply_filters( 'media_library_show_audio_playlist', true ); if ( null === $show_audio_playlist ) { $show_audio_playlist = $wpdb->get_var( "SELECT ID FROM $wpdb->posts WHERE post_type = 'attachment' AND post_mime_type LIKE 'audio%' LIMIT 1" ); } /* * Allows showing or hiding the "Create Video Playlist" button in the media library. * * By default, the "Create Video Playlist" button will always be shown in * the media library. If this filter returns `null`, a query will be run * to determine whether the media library contains any video items. This * was the default behavior prior to version 4.8.0, but this query is * expensive for large media libraries. * * @since 4.7.4 * @since 4.8.0 The filter's default value is `true` rather than `null`. * * @link https://core.trac.wordpress.org/ticket/31071 * * @param bool\|null $show Whether to show the button, or `null` to decide based * on whether any video files exist in the media library. / $show_video_playlist = apply_filters( 'media_library_show_video_playlist', true ); if ( null === $show_video_playlist ) { $show_video_playlist = $wpdb->get_var( "SELECT ID FROM $wpdb->posts WHERE post_type = 'attachment' AND post_mime_type LIKE 'video%' LIMIT 1" ); } /* * Allows overriding the list of months displayed in the media library. * * By default (if this filter does not return an array), a query will be * run to determine the months that have media items. This query can be * expensive for large media libraries, so it may be desirable for sites to * override this behavior. * * @since 4.7.4 * * @link https://core.trac.wordpress.org/ticket/31071 * * @param stdClass[]\|null $months An array of objects with `month` and `year` * properties, or `null` for default behavior. / $months = apply_filters( 'media_library_months_with_files', null ); if ( ! is_array( $months ) ) { $months = $wpdb->get_results( $wpdb->prepare( "SELECT DISTINCT YEAR( post_date ) AS year, MONTH( post_date ) AS month FROM $wpdb->posts WHERE post_type = %s ORDER BY post_date DESC", 'attachment' ) ); } foreach ( $months as $month_year ) { $month_year->text = sprintf( / translators: 1: Month, 2: Year. / __( '%1$s %2$d' ), $wp_locale->get_month( $month_year->month ), $month_year->year ); } /* * Filters whether the Media Library grid has infinite scrolling. Default `false`. * * @since 5.8.0 * * @param bool $infinite Whether the Media Library grid has infinite scrolling. / $infinite_scrolling = apply_filters( 'media_library_infinite_scrolling', false ); $settings = array( 'tabs' => $tabs, 'tabUrl' => add_query_arg( array( 'chromeless' => true ), admin_url( 'media-upload.php' ) ), 'mimeTypes' => wp_list_pluck( get_post_mime_types(), 0 ), /* This filter is documented in wp-admin/includes/media.php / 'captions' => ! apply_filters( 'disable_captions', '' ), 'nonce' => array( 'sendToEditor' => wp_create_nonce( 'media-send-to-editor' ), 'setAttachmentThumbnail' => wp_create_nonce( 'set-attachment-thumbnail' ), ), 'post' => array( 'id' => 0, ), 'defaultProps' => $props, 'attachmentCounts' => array( 'audio' => ( $show_audio_playlist ) ? 1 : 0, 'video' => ( $show_video_playlist ) ? 1 : 0, ), 'oEmbedProxyUrl' => rest_url( 'oembed/1.0/proxy' ), 'embedExts' => $exts, 'embedMimes' => $ext_mimes, 'contentWidth' => $content_width, 'months' => $months, 'mediaTrash' => MEDIA_TRASH ? 1 : 0, 'infiniteScrolling' => ( $infinite_scrolling ) ? 1 : 0, ); $post = null; if ( isset( $args['post'] ) ) { $post = get_post( $args['post'] ); $settings['post'] = array( 'id' => $post->ID, 'nonce' => wp_create_nonce( 'update-post_' . $post->ID ), ); $thumbnail_support = current_theme_supports( 'post-thumbnails', $post->post_type ) && post_type_supports( $post->post_type, 'thumbnail' ); if ( ! $thumbnail_support && 'attachment' === $post->post_type && $post->post_mime_type ) { if ( wp_attachment_is( 'audio', $post ) ) { $thumbnail_support = post_type_supports( 'attachment:audio', 'thumbnail' ) \|\| current_theme_supports( 'post-thumbnails', 'attachment:audio' ); } elseif ( wp_attachment_is( 'video', $post ) ) { $thumbnail_support = post_type_supports( 'attachment:video', 'thumbnail' ) \|\| current_theme_supports( 'post-thumbnails', 'attachment:video' ); } } if ( $thumbnail_support ) { $featured_image_id = get_post_meta( $post->ID, '_thumbnail_id', true ); $settings['post']['featuredImageId'] = $featured_image_id ? $featured_image_id : -1; } } if ( $post ) { $post_type_object = get_post_type_object( $post->post_type ); } else { $post_type_object = get_post_type_object( 'post' ); } $strings = array( // Generic. 'mediaFrameDefaultTitle' => __( 'Media' ), 'url' => __( 'URL' ), 'addMedia' => __( 'Add media' ), 'search' => __( 'Search' ), 'select' => __( 'Select' ), 'cancel' => __( 'Cancel' ), 'update' => __( 'Update' ), 'replace' => __( 'Replace' ), 'remove' => __( 'Remove' ), 'back' => __( 'Back' ), / * translators: This is a would-be plural string used in the media manager. * If there is not a word you can use in your language to avoid issues with the * lack of plural support here, turn it into "selected: %d" then translate it. / 'selected' => __( '%d selected' ), 'dragInfo' => __( 'Drag and drop to reorder media files.' ), // Upload. 'uploadFilesTitle' => __( 'Upload files' ), 'uploadImagesTitle' => __( 'Upload images' ), // Library. 'mediaLibraryTitle' => __( 'Media Library' ), 'insertMediaTitle' => __( 'Add media' ), 'createNewGallery' => __( 'Create a new gallery' ), 'createNewPlaylist' => __( 'Create a new playlist' ), 'createNewVideoPlaylist' => __( 'Create a new video playlist' ), 'returnToLibrary' => __( '← Go to library' ), 'allMediaItems' => __( 'All media items' ), 'allDates' => __( 'All dates' ), 'noItemsFound' => __( 'No items found.' ), 'insertIntoPost' => $post_type_object->labels->insert_into_item, 'unattached' => _x( 'Unattached', 'media items' ), 'mine' => _x( 'Mine', 'media items' ), 'trash' => _x( 'Trash', 'noun' ), 'uploadedToThisPost' => $post_type_object->labels->uploaded_to_this_item, 'warnDelete' => __( "You are about to permanently delete this item from your site.\nThis action cannot be undone.\n 'Cancel' to stop, 'OK' to delete." ), 'warnBulkDelete' => __( "You are about to permanently delete these items from your site.\nThis action cannot be undone.\n 'Cancel' to stop, 'OK' to delete." ), 'warnBulkTrash' => __( "You are about to trash these items.\n 'Cancel' to stop, 'OK' to delete." ), 'bulkSelect' => __( 'Bulk select' ), 'trashSelected' => __( 'Move to Trash' ), 'restoreSelected' => __( 'Restore from Trash' ), 'deletePermanently' => __( 'Delete permanently' ), 'errorDeleting' => __( 'Error in deleting the attachment.' ), 'apply' => __( 'Apply' ), 'filterByDate' => __( 'Filter by date' ), 'filterByType' => __( 'Filter by type' ), 'searchLabel' => __( 'Search media' ), 'searchMediaLabel' => __( 'Search media' ), // Backward compatibility pre-5.3. 'searchMediaPlaceholder' => __( 'Search media items...' ), // Placeholder (no ellipsis), backward compatibility pre-5.3. / translators: %d: Number of attachments found in a search. / 'mediaFound' => __( 'Number of media items found: %d' ), 'noMedia' => __( 'No media items found.' ), 'noMediaTryNewSearch' => __( 'No media items found. Try a different search.' ), // Library Details. 'attachmentDetails' => __( 'Attachment details' ), // From URL. 'insertFromUrlTitle' => __( 'Insert from URL' ), // Featured Images. 'setFeaturedImageTitle' => $post_type_object->labels->featured_image, 'setFeaturedImage' => $post_type_object->labels->set_featured_image, // Gallery. 'createGalleryTitle' => __( 'Create gallery' ), 'editGalleryTitle' => __( 'Edit gallery' ), 'cancelGalleryTitle' => __( '← Cancel gallery' ), 'insertGallery' => __( 'Insert gallery' ), 'updateGallery' => __( 'Update gallery' ), 'addToGallery' => __( 'Add to gallery' ), 'addToGalleryTitle' => __( 'Add to gallery' ), 'reverseOrder' => __( 'Reverse order' ), // Edit Image. 'imageDetailsTitle' => __( 'Image details' ), 'imageReplaceTitle' => __( 'Replace image' ), 'imageDetailsCancel' => __( 'Cancel edit' ), 'editImage' => __( 'Edit image' ), // Crop Image. 'chooseImage' => __( 'Choose image' ), 'selectAndCrop' => __( 'Select and crop' ), 'skipCropping' => __( 'Skip cropping' ), 'cropImage' => __( 'Crop image' ), 'cropYourImage' => __( 'Crop your image' ), 'cropping' => __( 'Cropping…' ), / translators: 1: Suggested width number, 2: Suggested height number. / 'suggestedDimensions' => __( 'Suggested image dimensions: %1$s by %2$s pixels.' ), 'cropError' => __( 'There has been an error cropping your image.' ), // Edit Audio. 'audioDetailsTitle' => __( 'Audio details' ), 'audioReplaceTitle' => __( 'Replace audio' ), 'audioAddSourceTitle' => __( 'Add audio source' ), 'audioDetailsCancel' => __( 'Cancel edit' ), // Edit Video. 'videoDetailsTitle' => __( 'Video details' ), 'videoReplaceTitle' => __( 'Replace video' ), 'videoAddSourceTitle' => __( 'Add video source' ), 'videoDetailsCancel' => __( 'Cancel edit' ), 'videoSelectPosterImageTitle' => __( 'Select poster image' ), 'videoAddTrackTitle' => __( 'Add subtitles' ), // Playlist. 'playlistDragInfo' => __( 'Drag and drop to reorder tracks.' ), 'createPlaylistTitle' => __( 'Create audio playlist' ), 'editPlaylistTitle' => __( 'Edit audio playlist' ), 'cancelPlaylistTitle' => __( '← Cancel audio playlist' ), 'insertPlaylist' => __( 'Insert audio playlist' ), 'updatePlaylist' => __( 'Update audio playlist' ), 'addToPlaylist' => __( 'Add to audio playlist' ), 'addToPlaylistTitle' => __( 'Add to Audio Playlist' ), // Video Playlist. 'videoPlaylistDragInfo' => __( 'Drag and drop to reorder videos.' ), 'createVideoPlaylistTitle' => __( 'Create video playlist' ), 'editVideoPlaylistTitle' => __( 'Edit video playlist' ), 'cancelVideoPlaylistTitle' => __( '← Cancel video playlist' ), 'insertVideoPlaylist' => __( 'Insert video playlist' ), 'updateVideoPlaylist' => __( 'Update video playlist' ), 'addToVideoPlaylist' => __( 'Add to video playlist' ), 'addToVideoPlaylistTitle' => __( 'Add to video Playlist' ), // Headings. 'filterAttachments' => __( 'Filter media' ), 'attachmentsList' => __( 'Media list' ), ); /* * Filters the media view settings. * * @since 3.5.0 * * @param array $settings List of media view settings. * @param WP_Post $post Post object. / $settings = apply_filters( 'media_view_settings', $settings, $post ); /* * Filters the media view strings. * * @since 3.5.0 * * @param string[] $strings Array of media view strings keyed by the name they'll be referenced by in JavaScript. * @param WP_Post $post Post object. / $strings = apply_filters( 'media_view_strings', $strings, $post ); $strings['settings'] = $settings; / * Ensure we enqueue media-editor first, that way media-views * is registered internally before we try to localize it. See #24724. / wp_enqueue_script( 'media-editor' ); wp_localize_script( 'media-views', '_wpMediaViewsL10n', $strings ); wp_enqueue_script( 'media-audiovideo' ); wp_enqueue_style( 'media-views' ); if ( is_admin() ) { wp_enqueue_script( 'mce-view' ); wp_enqueue_script( 'image-edit' ); } wp_enqueue_style( 'imgareaselect' ); wp_plupload_default_settings(); require_once ABSPATH . WPINC . '/media-template.php'; add_action( 'admin_footer', 'wp_print_media_templates' ); add_action( 'wp_footer', 'wp_print_media_templates' ); add_action( 'customize_controls_print_footer_scripts', 'wp_print_media_templates' ); /* * Fires at the conclusion of wp_enqueue_media(). * * @since 3.5.0 / do_action( 'wp_enqueue_media' ); } /* * Retrieves media attached to the passed post. * * @since 3.6.0 * * @param string $type Mime type. * @param int\|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post. * @return WP_Post[] Array of media attached to the given post. / function get_attached_media( $type, $post = 0 ) { $post = get_post( $post ); if ( ! $post ) { return array(); } $args = array( 'post_parent' => $post->ID, 'post_type' => 'attachment', 'post_mime_type' => $type, 'posts_per_page' => -1, 'orderby' => 'menu_order', 'order' => 'ASC', ); /* * Filters arguments used to retrieve media attached to the given post. * * @since 3.6.0 * * @param array $args Post query arguments. * @param string $type Mime type of the desired media. * @param WP_Post $post Post object. / $args = apply_filters( 'get_attached_media_args', $args, $type, $post ); $children = get_children( $args ); /* * Filters the list of media attached to the given post. * * @since 3.6.0 * * @param WP_Post[] $children Array of media attached to the given post. * @param string $type Mime type of the media desired. * @param WP_Post $post Post object. / return (array) apply_filters( 'get_attached_media', $children, $type, $post ); } /* * Checks the HTML content for an audio, video, object, embed, or iframe tags. * * @since 3.6.0 * * @param string $content A string of HTML which might contain media elements. * @param string[] $types An array of media types: 'audio', 'video', 'object', 'embed', or 'iframe'. * @return string[] Array of found HTML media elements. / function get_media_embedded_in_content( $content, $types = null ) { $html = array(); /* * Filters the embedded media types that are allowed to be returned from the content blob. * * @since 4.2.0 * * @param string[] $allowed_media_types An array of allowed media types. Default media types are * 'audio', 'video', 'object', 'embed', and 'iframe'. / $allowed_media_types = apply_filters( 'media_embedded_in_content_allowed_types', array( 'audio', 'video', 'object', 'embed', 'iframe' ) ); if ( ! empty( $types ) ) { if ( ! is_array( $types ) ) { $types = array( $types ); } $allowed_media_types = array_intersect( $allowed_media_types, $types ); } $tags = implode( '\|', $allowed_media_types ); if ( preg_match_all( '#<(?P<tag>' . $tags . ')[^<]?(?:>[\s\S]?<\/(?P=tag)>\|\s\/>)#', $content, $matches ) ) { foreach ( $matches[0] as $match ) { $html[] = $match; } } return $html; } /** * Retrieves galleries from the passed post's content. * * @since 3.6.0 * * @param int\|WP_Post $post Post ID or object. * @param bool $html Optional. Whether to return HTML or data in the array. Default true. * @return array A list of arrays, each containing gallery data and srcs parsed * from the expanded shortcode. / function get_post_galleries( $post, $html = true ) { $post = get_post( $post ); if ( ! $post ) { return array(); } if ( ! has_shortcode( $post->post_content, 'gallery' ) && ! has_block( 'gallery', $post->post_content ) ) { return array(); } $galleries = array(); if ( preg_match_all( '/' . get_shortcode_regex() . '/s', $post->post_content, $matches, PREG_SET_ORDER ) ) { foreach ( $matches as $shortcode ) { if ( 'gallery' === $shortcode[2] ) { $srcs = array(); $shortcode_attrs = shortcode_parse_atts( $shortcode[3] ); // Specify the post ID of the gallery we're viewing if the shortcode doesn't reference another post already. if ( ! isset( $shortcode_attrs['id'] ) ) { $shortcode[3] .= ' id="' . (int) $post->ID . '"'; } $gallery = do_shortcode_tag( $shortcode ); if ( $html ) { $galleries[] = $gallery; } else { preg_match_all( '#src=([\'"])(.+?)\1#is', $gallery, $src, PREG_SET_ORDER ); if ( ! empty( $src ) ) { foreach ( $src as $s ) { $srcs[] = $s[2]; } } $galleries[] = array_merge( $shortcode_attrs, array( 'src' => array_values( array_unique( $srcs ) ), ) ); } } } } if ( has_block( 'gallery', $post->post_content ) ) { $post_blocks = parse_blocks( $post->post_content ); while ( $block = array_shift( $post_blocks ) ) { $has_inner_blocks = ! empty( $block['innerBlocks'] ); // Skip blocks with no blockName and no innerHTML. if ( ! $block['blockName'] ) { continue; } // Skip non-Gallery blocks. if ( 'core/gallery' !== $block['blockName'] ) { // Move inner blocks into the root array before skipping. if ( $has_inner_blocks ) { array_push( $post_blocks, ...$block['innerBlocks'] ); } continue; } // New Gallery block format as HTML. if ( $has_inner_blocks && $html ) { $block_html = wp_list_pluck( $block['innerBlocks'], 'innerHTML' ); $galleries[] = '<figure>' . implode( ' ', $block_html ) . '</figure>'; continue; } $srcs = array(); // New Gallery block format as an array. if ( $has_inner_blocks ) { $attrs = wp_list_pluck( $block['innerBlocks'], 'attrs' ); $ids = wp_list_pluck( $attrs, 'id' ); foreach ( $ids as $id ) { $url = wp_get_attachment_url( $id ); if ( is_string( $url ) && ! in_array( $url, $srcs, true ) ) { $srcs[] = $url; } } $galleries[] = array( 'ids' => implode( ',', $ids ), 'src' => $srcs, ); continue; } // Old Gallery block format as HTML. if ( $html ) { $galleries[] = $block['innerHTML']; continue; } // Old Gallery block format as an array. $ids = ! empty( $block['attrs']['ids'] ) ? $block['attrs']['ids'] : array(); // If present, use the image IDs from the JSON blob as canonical. if ( ! empty( $ids ) ) { foreach ( $ids as $id ) { $url = wp_get_attachment_url( $id ); if ( is_string( $url ) && ! in_array( $url, $srcs, true ) ) { $srcs[] = $url; } } $galleries[] = array( 'ids' => implode( ',', $ids ), 'src' => $srcs, ); continue; } // Otherwise, extract srcs from the innerHTML. preg_match_all( '#src=([\'"])(.+?)\1#is', $block['innerHTML'], $found_srcs, PREG_SET_ORDER ); if ( ! empty( $found_srcs[0] ) ) { foreach ( $found_srcs as $src ) { if ( isset( $src[2] ) && ! in_array( $src[2], $srcs, true ) ) { $srcs[] = $src[2]; } } } $galleries[] = array( 'src' => $srcs ); } } /* * Filters the list of all found galleries in the given post. * * @since 3.6.0 * * @param array $galleries Associative array of all found post galleries. * @param WP_Post $post Post object. / return apply_filters( 'get_post_galleries', $galleries, $post ); } /* * Checks a specified post's content for gallery and, if present, return the first * * @since 3.6.0 * * @param int\|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post. * @param bool $html Optional. Whether to return HTML or data. Default is true. * @return string\|array Gallery data and srcs parsed from the expanded shortcode. / function get_post_gallery( $post = 0, $html = true ) { $galleries = get_post_galleries( $post, $html ); $gallery = reset( $galleries ); /* * Filters the first-found post gallery. * * @since 3.6.0 * * @param array $gallery The first-found post gallery. * @param int\|WP_Post $post Post ID or object. * @param array $galleries Associative array of all found post galleries. / return apply_filters( 'get_post_gallery', $gallery, $post, $galleries ); } /* * Retrieves the image srcs from galleries from a post's content, if present. * * @since 3.6.0 * * @see get_post_galleries() * * @param int\|WP_Post $post Optional. Post ID or WP_Post object. Default is global `$post`. * @return array A list of lists, each containing image srcs parsed. * from an expanded shortcode / function get_post_galleries_images( $post = 0 ) { $galleries = get_post_galleries( $post, false ); return wp_list_pluck( $galleries, 'src' ); } /* * Checks a post's content for galleries and return the image srcs for the first found gallery. * * @since 3.6.0 * * @see get_post_gallery() * * @param int\|WP_Post $post Optional. Post ID or WP_Post object. Default is global `$post`. * @return string[] A list of a gallery's image srcs in order. / function get_post_gallery_images( $post = 0 ) { $gallery = get_post_gallery( $post, false ); return empty( $gallery['src'] ) ? array() : $gallery['src']; } /* * Maybe attempts to generate attachment metadata, if missing. * * @since 3.9.0 * * @param WP_Post $attachment Attachment object. / function wp_maybe_generate_attachment_metadata( $attachment ) { if ( empty( $attachment ) \|\| empty( $attachment->ID ) ) { return; } $attachment_id = (int) $attachment->ID; $file = get_attached_file( $attachment_id ); $meta = wp_get_attachment_metadata( $attachment_id ); if ( empty( $meta ) && file_exists( $file ) ) { $_meta = get_post_meta( $attachment_id ); $_lock = 'wp_generating_att_' . $attachment_id; if ( ! array_key_exists( '_wp_attachment_metadata', $_meta ) && ! get_transient( $_lock ) ) { set_transient( $_lock, $file ); wp_update_attachment_metadata( $attachment_id, wp_generate_attachment_metadata( $attachment_id, $file ) ); delete_transient( $_lock ); } } } /* * Tries to convert an attachment URL into a post ID. * * @since 4.0.0 * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $url The URL to resolve. * @return int The found post ID, or 0 on failure. / function attachment_url_to_postid( $url ) { global $wpdb; /* * Filters the attachment ID to allow short-circuit the function. * * Allows plugins to short-circuit attachment ID lookups. Plugins making * use of this function should return: * * - 0 (integer) to indicate the attachment is not found, * - attachment ID (integer) to indicate the attachment ID found, * - null to indicate WordPress should proceed with the lookup. * * Warning: The post ID may be null or zero, both of which cast to a * boolean false. For information about casting to booleans see the * {@link https://www.php.net/manual/en/language.types.boolean.php PHP documentation}. * Use the === operator for testing the post ID when developing filters using * this hook. * * @since 6.7.0 * * @param int\|null $post_id The result of the post ID lookup. Null to indicate * no lookup has been attempted. Default null. * @param string $url The URL being looked up. / $post_id = apply_filters( 'pre_attachment_url_to_postid', null, $url ); if ( null !== $post_id ) { return (int) $post_id; } $dir = wp_get_upload_dir(); $path = $url; $site_url = parse_url( $dir['url'] ); $image_path = parse_url( $path ); // Force the protocols to match if needed. if ( isset( $image_path['scheme'] ) && ( $image_path['scheme'] !== $site_url['scheme'] ) ) { $path = str_replace( $image_path['scheme'], $site_url['scheme'], $path ); } if ( str_starts_with( $path, $dir['baseurl'] . '/' ) ) { $path = substr( $path, strlen( $dir['baseurl'] . '/' ) ); } $sql = $wpdb->prepare( "SELECT post_id, meta_value FROM $wpdb->postmeta WHERE meta_key = '_wp_attached_file' AND meta_value = %s", $path ); $results = $wpdb->get_results( $sql ); $post_id = null; if ( $results ) { // Use the first available result, but prefer a case-sensitive match, if exists. $post_id = reset( $results )->post_id; if ( count( $results ) > 1 ) { foreach ( $results as $result ) { if ( $path === $result->meta_value ) { $post_id = $result->post_id; break; } } } } /* * Filters an attachment ID found by URL. * * @since 4.2.0 * * @param int\|null $post_id The post_id (if any) found by the function. * @param string $url The URL being looked up. / return (int) apply_filters( 'attachment_url_to_postid', $post_id, $url ); } /* * Returns the URLs for CSS files used in an iframe-sandbox'd TinyMCE media view. * * @since 4.0.0 * * @return string[] The relevant CSS file URLs. / function wpview_media_sandbox_styles() { $version = 'ver=' . get_bloginfo( 'version' ); $mediaelement = includes_url( "js/mediaelement/mediaelementplayer-legacy.min.css?$version" ); $wpmediaelement = includes_url( "js/mediaelement/wp-mediaelement.css?$version" ); return array( $mediaelement, $wpmediaelement ); } /* * Registers the personal data exporter for media. * * @param array[] $exporters An array of personal data exporters, keyed by their ID. * @return array[] Updated array of personal data exporters. / function wp_register_media_personal_data_exporter( $exporters ) { $exporters['wordpress-media'] = array( 'exporter_friendly_name' => __( 'WordPress Media' ), 'callback' => 'wp_media_personal_data_exporter', ); return $exporters; } /* * Finds and exports attachments associated with an email address. * * @since 4.9.6 * * @param string $email_address The attachment owner email address. * @param int $page Attachment page number. * @return array { * An array of personal data. * * @type array[] $data An array of personal data arrays. * @type bool $done Whether the exporter is finished. * } / function wp_media_personal_data_exporter( $email_address, $page = 1 ) { // Limit us to 50 attachments at a time to avoid timing out. $number = 50; $page = (int) $page; $data_to_export = array(); $user = get_user_by( 'email', $email_address ); if ( false === $user ) { return array( 'data' => $data_to_export, 'done' => true, ); } $post_query = new WP_Query( array( 'author' => $user->ID, 'posts_per_page' => $number, 'paged' => $page, 'post_type' => 'attachment', 'post_status' => 'any', 'orderby' => 'ID', 'order' => 'ASC', ) ); foreach ( (array) $post_query->posts as $post ) { $attachment_url = wp_get_attachment_url( $post->ID ); if ( $attachment_url ) { $post_data_to_export = array( array( 'name' => __( 'URL' ), 'value' => $attachment_url, ), ); $data_to_export[] = array( 'group_id' => 'media', 'group_label' => __( 'Media' ), 'group_description' => __( 'User’s media data.' ), 'item_id' => "post-{$post->ID}", 'data' => $post_data_to_export, ); } } $done = $post_query->max_num_pages <= $page; return array( 'data' => $data_to_export, 'done' => $done, ); } /* * Adds additional default image sub-sizes. * * These sizes are meant to enhance the way WordPress displays images on the front-end on larger, * high-density devices. They make it possible to generate more suitable `srcset` and `sizes` attributes * when the users upload large images. * * The sizes can be changed or removed by themes and plugins but that is not recommended. * The size "names" reflect the image dimensions, so changing the sizes would be quite misleading. * * @since 5.3.0 * @access private / function _wp_add_additional_image_sizes() { // 2x medium_large size. add_image_size( '1536x1536', 1536, 1536 ); // 2x large size. add_image_size( '2048x2048', 2048, 2048 ); } /* * Callback to enable showing of the user error when uploading .heic images. * * @since 5.5.0 * @since 6.7.0 The default behavior is to enable heic uploads as long as the server * supports the format. The uploads are converted to JPEG's by default. * * @param array[] $plupload_settings The settings for Plupload.js. * @return array[] Modified settings for Plupload.js. / function wp_show_heic_upload_error( $plupload_settings ) { // Check if HEIC images can be edited. if ( ! wp_image_editor_supports( array( 'mime_type' => 'image/heic' ) ) ) { $plupload_init['heic_upload_error'] = true; } return $plupload_settings; } /* * Allows PHP's getimagesize() to be debuggable when necessary. * * @since 5.7.0 * @since 5.8.0 Added support for WebP images. * @since 6.5.0 Added support for AVIF images. * * @param string $filename The file path. * @param array $image_info Optional. Extended image information (passed by reference). * @return array\|false Array of image information or false on failure. / function wp_getimagesize( $filename, ?array &$image_info = null ) { // Don't silence errors when in debug mode, unless running unit tests. if ( defined( 'WP_DEBUG' ) && WP_DEBUG && ! defined( 'WP_RUN_CORE_TESTS' ) ) { if ( 2 === func_num_args() ) { $info = getimagesize( $filename, $image_info ); } else { $info = getimagesize( $filename ); } } else { / * Silencing notice and warning is intentional. * * getimagesize() has a tendency to generate errors, such as * "corrupt JPEG data: 7191 extraneous bytes before marker", * even when it's able to provide image size information. * * See https://core.trac.wordpress.org/ticket/42480 / if ( 2 === func_num_args() ) { $info = @getimagesize( $filename, $image_info ); } else { $info = @getimagesize( $filename ); } } if ( ! empty( $info ) && // Some PHP versions return 0x0 sizes from `getimagesize` for unrecognized image formats, including AVIFs. ! ( empty( $info[0] ) && empty( $info[1] ) ) ) { return $info; } $image_mime_type = wp_get_image_mime( $filename ); // Not an image? if ( false === $image_mime_type ) { return false; } / * For PHP versions that don't support WebP images, * extract the image size info from the file headers. / if ( 'image/webp' === $image_mime_type ) { $webp_info = wp_get_webp_info( $filename ); $width = $webp_info['width']; $height = $webp_info['height']; // Mimic the native return format. if ( $width && $height ) { return array( $width, $height, IMAGETYPE_WEBP, sprintf( 'width="%d" height="%d"', $width, $height ), 'mime' => 'image/webp', ); } } // For PHP versions that don't support AVIF images, extract the image size info from the file headers. if ( 'image/avif' === $image_mime_type ) { $avif_info = wp_get_avif_info( $filename ); $width = $avif_info['width']; $height = $avif_info['height']; // Mimic the native return format. if ( $width && $height ) { return array( $width, $height, IMAGETYPE_AVIF, sprintf( 'width="%d" height="%d"', $width, $height ), 'mime' => 'image/avif', ); } } // For PHP versions that don't support HEIC images, extract the size info using Imagick when available. if ( wp_is_heic_image_mime_type( $image_mime_type ) ) { $editor = wp_get_image_editor( $filename ); if ( is_wp_error( $editor ) ) { return false; } // If the editor for HEICs is Imagick, use it to get the image size. if ( $editor instanceof WP_Image_Editor_Imagick ) { $size = $editor->get_size(); return array( $size['width'], $size['height'], IMAGETYPE_HEIC, sprintf( 'width="%d" height="%d"', $size['width'], $size['height'] ), 'mime' => 'image/heic', ); } } // The image could not be parsed. return false; } /* * Extracts meta information about an AVIF file: width, height, bit depth, and number of channels. * * @since 6.5.0 * * @param string $filename Path to an AVIF file. * @return array { * An array of AVIF image information. * * @type int\|false $width Image width on success, false on failure. * @type int\|false $height Image height on success, false on failure. * @type int\|false $bit_depth Image bit depth on success, false on failure. * @type int\|false $num_channels Image number of channels on success, false on failure. * } / function wp_get_avif_info( $filename ) { $results = array( 'width' => false, 'height' => false, 'bit_depth' => false, 'num_channels' => false, ); if ( 'image/avif' !== wp_get_image_mime( $filename ) ) { return $results; } // Parse the file using libavifinfo's PHP implementation. require_once ABSPATH . WPINC . '/class-avif-info.php'; $handle = fopen( $filename, 'rb' ); if ( $handle ) { $parser = new Avifinfo\Parser( $handle ); $success = $parser->parse_ftyp() && $parser->parse_file(); fclose( $handle ); if ( $success ) { $results = $parser->features->primary_item_features; } } return $results; } /* * Extracts meta information about a WebP file: width, height, and type. * * @since 5.8.0 * * @param string $filename Path to a WebP file. * @return array { * An array of WebP image information. * * @type int\|false $width Image width on success, false on failure. * @type int\|false $height Image height on success, false on failure. * @type string\|false $type The WebP type: one of 'lossy', 'lossless' or 'animated-alpha'. * False on failure. * } / function wp_get_webp_info( $filename ) { $width = false; $height = false; $type = false; if ( 'image/webp' !== wp_get_image_mime( $filename ) ) { return compact( 'width', 'height', 'type' ); } $magic = file_get_contents( $filename, false, null, 0, 40 ); if ( false === $magic ) { return compact( 'width', 'height', 'type' ); } // Make sure we got enough bytes. if ( strlen( $magic ) < 40 ) { return compact( 'width', 'height', 'type' ); } / * The headers are a little different for each of the three formats. * Header values based on WebP docs, see https://developers.google.com/speed/webp/docs/riff_container. / switch ( substr( $magic, 12, 4 ) ) { // Lossy WebP. case 'VP8 ': $parts = unpack( 'v2', substr( $magic, 26, 4 ) ); $width = (int) ( $parts[1] & 0x3FFF ); $height = (int) ( $parts[2] & 0x3FFF ); $type = 'lossy'; break; // Lossless WebP. case 'VP8L': $parts = unpack( 'C4', substr( $magic, 21, 4 ) ); $width = (int) ( $parts[1] \| ( ( $parts[2] & 0x3F ) << 8 ) ) + 1; $height = (int) ( ( ( $parts[2] & 0xC0 ) >> 6 ) \| ( $parts[3] << 2 ) \| ( ( $parts[4] & 0x03 ) << 10 ) ) + 1; $type = 'lossless'; break; // Animated/alpha WebP. case 'VP8X': // Pad 24-bit int. $width = unpack( 'V', substr( $magic, 24, 3 ) . "\x00" ); $width = (int) ( $width[1] & 0xFFFFFF ) + 1; // Pad 24-bit int. $height = unpack( 'V', substr( $magic, 27, 3 ) . "\x00" ); $height = (int) ( $height[1] & 0xFFFFFF ) + 1; $type = 'animated-alpha'; break; } return compact( 'width', 'height', 'type' ); } /* * Gets loading optimization attributes. * * This function returns an array of attributes that should be merged into the given attributes array to optimize * loading performance. Potential attributes returned by this function are: * - `loading` attribute with a value of "lazy" * - `fetchpriority` attribute with a value of "high" * - `decoding` attribute with a value of "async" * * If any of these attributes are already present in the given attributes, they will not be modified. Note that no * element should have both `loading="lazy"` and `fetchpriority="high"`, so the function will trigger a warning in case * both attributes are present with those values. * * @since 6.3.0 * * @global WP_Query $wp_query WordPress Query object. * * @param string $tag_name The tag name. * @param array $attr Array of the attributes for the tag. * @param string $context Context for the element for which the loading optimization attribute is requested. * @return array Loading optimization attributes. / function wp_get_loading_optimization_attributes( $tag_name, $attr, $context ) { global $wp_query; /* * Filters whether to short-circuit loading optimization attributes. * * Returning an array from the filter will effectively short-circuit the loading of optimization attributes, * returning that value instead. * * @since 6.4.0 * * @param array\|false $loading_attrs False by default, or array of loading optimization attributes to short-circuit. * @param string $tag_name The tag name. * @param array $attr Array of the attributes for the tag. * @param string $context Context for the element for which the loading optimization attribute is requested. / $loading_attrs = apply_filters( 'pre_wp_get_loading_optimization_attributes', false, $tag_name, $attr, $context ); if ( is_array( $loading_attrs ) ) { return $loading_attrs; } $loading_attrs = array(); / * Skip lazy-loading for the overall block template, as it is handled more granularly. * The skip is also applicable for `fetchpriority`. / if ( 'template' === $context ) { /* This filter is documented in wp-includes/media.php / return apply_filters( 'wp_get_loading_optimization_attributes', $loading_attrs, $tag_name, $attr, $context ); } // For now this function only supports images and iframes. if ( 'img' !== $tag_name && 'iframe' !== $tag_name ) { /* This filter is documented in wp-includes/media.php / return apply_filters( 'wp_get_loading_optimization_attributes', $loading_attrs, $tag_name, $attr, $context ); } / * Skip programmatically created images within content blobs as they need to be handled together with the other * images within the post content or widget content. * Without this clause, they would already be considered within their own context which skews the image count and * can result in the first post content image being lazy-loaded or an image further down the page being marked as a * high priority. / if ( 'the_content' !== $context && doing_filter( 'the_content' ) \|\| 'widget_text_content' !== $context && doing_filter( 'widget_text_content' ) \|\| 'widget_block_content' !== $context && doing_filter( 'widget_block_content' ) ) { /* This filter is documented in wp-includes/media.php / return apply_filters( 'wp_get_loading_optimization_attributes', $loading_attrs, $tag_name, $attr, $context ); } / * Add `decoding` with a value of "async" for every image unless it has a * conflicting `decoding` attribute already present. / if ( 'img' === $tag_name ) { if ( isset( $attr['decoding'] ) ) { $loading_attrs['decoding'] = $attr['decoding']; } else { $loading_attrs['decoding'] = 'async'; } } // For any resources, width and height must be provided, to avoid layout shifts. if ( ! isset( $attr['width'], $attr['height'] ) ) { /* This filter is documented in wp-includes/media.php / return apply_filters( 'wp_get_loading_optimization_attributes', $loading_attrs, $tag_name, $attr, $context ); } / * The key function logic starts here. / $maybe_in_viewport = null; $increase_count = false; $maybe_increase_count = false; // Logic to handle a `loading` attribute that is already provided. if ( isset( $attr['loading'] ) ) { / * Interpret "lazy" as not in viewport. Any other value can be * interpreted as in viewport (realistically only "eager" or `false` * to force-omit the attribute are other potential values). / if ( 'lazy' === $attr['loading'] ) { $maybe_in_viewport = false; } else { $maybe_in_viewport = true; } } // Logic to handle a `fetchpriority` attribute that is already provided. if ( isset( $attr['fetchpriority'] ) && 'high' === $attr['fetchpriority'] ) { / * If the image was already determined to not be in the viewport (e.g. * from an already provided `loading` attribute), trigger a warning. * Otherwise, the value can be interpreted as in viewport, since only * the most important in-viewport image should have `fetchpriority` set * to "high". / if ( false === $maybe_in_viewport ) { _doing_it_wrong( __FUNCTION__, __( 'An image should not be lazy-loaded and marked as high priority at the same time.' ), '6.3.0' ); / * Set `fetchpriority` here for backward-compatibility as we should * not override what a developer decided, even though it seems * incorrect. / $loading_attrs['fetchpriority'] = 'high'; } else { $maybe_in_viewport = true; } } if ( null === $maybe_in_viewport ) { $header_enforced_contexts = array( 'template_part_' . WP_TEMPLATE_PART_AREA_HEADER => true, 'get_header_image_tag' => true, ); /* * Filters the header-specific contexts. * * @since 6.4.0 * * @param array $default_header_enforced_contexts Map of contexts for which elements should be considered * in the header of the page, as $context => $enabled * pairs. The $enabled should always be true. / $header_enforced_contexts = apply_filters( 'wp_loading_optimization_force_header_contexts', $header_enforced_contexts ); // Consider elements with these header-specific contexts to be in viewport. if ( isset( $header_enforced_contexts[ $context ] ) ) { $maybe_in_viewport = true; $maybe_increase_count = true; } elseif ( ! is_admin() && in_the_loop() && is_main_query() ) { / * Get the content media count, since this is a main query * content element. This is accomplished by "increasing" * the count by zero, as the only way to get the count is * to call this function. * The actual count increase happens further below, based * on the `$increase_count` flag set here. / $content_media_count = wp_increase_content_media_count( 0 ); $increase_count = true; // If the count so far is below the threshold, `loading` attribute is omitted. if ( $content_media_count < wp_omit_loading_attr_threshold() ) { $maybe_in_viewport = true; } else { $maybe_in_viewport = false; } } elseif ( // Only apply for main query but before the loop. $wp_query->before_loop && $wp_query->is_main_query() / * Any image before the loop, but after the header has started should not be lazy-loaded, * except when the footer has already started which can happen when the current template * does not include any loop. / && did_action( 'get_header' ) && ! did_action( 'get_footer' ) ) { $maybe_in_viewport = true; $maybe_increase_count = true; } } / * If the element is in the viewport (`true`), potentially add * `fetchpriority` with a value of "high". Otherwise, i.e. if the element * is not not in the viewport (`false`) or it is unknown (`null`), add * `loading` with a value of "lazy". / if ( $maybe_in_viewport ) { $loading_attrs = wp_maybe_add_fetchpriority_high_attr( $loading_attrs, $tag_name, $attr ); } else { // Only add `loading="lazy"` if the feature is enabled. if ( wp_lazy_loading_enabled( $tag_name, $context ) ) { $loading_attrs['loading'] = 'lazy'; } } / * If flag was set based on contextual logic above, increase the content * media count, either unconditionally, or based on whether the image size * is larger than the threshold. / if ( $increase_count ) { wp_increase_content_media_count(); } elseif ( $maybe_increase_count ) { /* This filter is documented in wp-includes/media.php / $wp_min_priority_img_pixels = apply_filters( 'wp_min_priority_img_pixels', 50000 ); if ( $wp_min_priority_img_pixels <= $attr['width'] $attr['height'] ) { wp_increase_content_media_count(); } } /** * Filters the loading optimization attributes. * * @since 6.4.0 * * @param array $loading_attrs The loading optimization attributes. * @param string $tag_name The tag name. * @param array $attr Array of the attributes for the tag. * @param string $context Context for the element for which the loading optimization attribute is requested. / return apply_filters( 'wp_get_loading_optimization_attributes', $loading_attrs, $tag_name, $attr, $context ); } /* * Gets the threshold for how many of the first content media elements to not lazy-load. * * This function runs the {@see 'wp_omit_loading_attr_threshold'} filter, which uses a default threshold value of 3. * The filter is only run once per page load, unless the `$force` parameter is used. * * @since 5.9.0 * * @param bool $force Optional. If set to true, the filter will be (re-)applied even if it already has been before. * Default false. * @return int The number of content media elements to not lazy-load. / function wp_omit_loading_attr_threshold( $force = false ) { static $omit_threshold; // This function may be called multiple times. Run the filter only once per page load. if ( ! isset( $omit_threshold ) \|\| $force ) { /* * Filters the threshold for how many of the first content media elements to not lazy-load. * * For these first content media elements, the `loading` attribute will be omitted. By default, this is the case * for only the very first content media element. * * @since 5.9.0 * @since 6.3.0 The default threshold was changed from 1 to 3. * * @param int $omit_threshold The number of media elements where the `loading` attribute will not be added. Default 3. / $omit_threshold = apply_filters( 'wp_omit_loading_attr_threshold', 3 ); } return $omit_threshold; } /* * Increases an internal content media count variable. * * @since 5.9.0 * @access private * * @param int $amount Optional. Amount to increase by. Default 1. * @return int The latest content media count, after the increase. / function wp_increase_content_media_count( $amount = 1 ) { static $content_media_count = 0; $content_media_count += $amount; return $content_media_count; } /* * Determines whether to add `fetchpriority='high'` to loading attributes. * * @since 6.3.0 * @access private * * @param array $loading_attrs Array of the loading optimization attributes for the element. * @param string $tag_name The tag name. * @param array $attr Array of the attributes for the element. * @return array Updated loading optimization attributes for the element. / function wp_maybe_add_fetchpriority_high_attr( $loading_attrs, $tag_name, $attr ) { // For now, adding `fetchpriority="high"` is only supported for images. if ( 'img' !== $tag_name ) { return $loading_attrs; } if ( isset( $attr['fetchpriority'] ) ) { / * While any `fetchpriority` value could be set in `$loading_attrs`, * for consistency we only do it for `fetchpriority="high"` since that * is the only possible value that WordPress core would apply on its * own. / if ( 'high' === $attr['fetchpriority'] ) { $loading_attrs['fetchpriority'] = 'high'; wp_high_priority_element_flag( false ); } return $loading_attrs; } // Lazy-loading and `fetchpriority="high"` are mutually exclusive. if ( isset( $loading_attrs['loading'] ) && 'lazy' === $loading_attrs['loading'] ) { return $loading_attrs; } if ( ! wp_high_priority_element_flag() ) { return $loading_attrs; } /* * Filters the minimum square-pixels threshold for an image to be eligible as the high-priority image. * * @since 6.3.0 * * @param int $threshold Minimum square-pixels threshold. Default 50000. / $wp_min_priority_img_pixels = apply_filters( 'wp_min_priority_img_pixels', 50000 ); if ( $wp_min_priority_img_pixels <= $attr['width'] $attr['height'] ) { $loading_attrs['fetchpriority'] = 'high'; wp_high_priority_element_flag( false ); } return $loading_attrs; } /** * Accesses a flag that indicates if an element is a possible candidate for `fetchpriority='high'`. * * @since 6.3.0 * @access private * * @param bool $value Optional. Used to change the static variable. Default null. * @return bool Returns true if high-priority element was marked already, otherwise false. / function wp_high_priority_element_flag( $value = null ) { static $high_priority_element = true; if ( is_bool( $value ) ) { $high_priority_element = $value; } return $high_priority_element; } /* * Determines the output format for the image editor. * * @since 6.7.0 * @access private * * @param string $filename Path to the image. * @param string $mime_type The source image mime type. * @return string[] An array of mime type mappings. / function wp_get_image_editor_output_format( $filename, $mime_type ) { $output_format = array( 'image/heic' => 'image/jpeg', 'image/heif' => 'image/jpeg', 'image/heic-sequence' => 'image/jpeg', 'image/heif-sequence' => 'image/jpeg', ); /* * Filters the image editor output format mapping. * * Enables filtering the mime type used to save images. By default HEIC/HEIF images * are converted to JPEGs. * * @see WP_Image_Editor::get_output_format() * * @since 5.8.0 * @since 6.7.0 The default was changed from an empty array to an array * containing the HEIC/HEIF images mime types. * * @param string[] $output_format { * An array of mime type mappings. Maps a source mime type to a new * destination mime type. By default maps HEIC/HEIF input to JPEG output. * * @type string ...$0 The new mime type. * } * @param string $filename Path to the image. * @param string $mime_type The source image mime type. */ return apply_filters( 'image_editor_output_format', $output_format, $filename, $mime_type ); } Back

Edit File : media.php | Size : 215.12 KB

<?php
/**
 * WordPress API for media display.
 *
 * @package WordPress
 * @subpackage Media
 */

// Don't load directly.
if ( ! defined( 'ABSPATH' ) ) {
	die( '-1' );
}

/**
 * Retrieves additional image sizes.
 *
 * @since 4.7.0
 *
 * @global array $_wp_additional_image_sizes
 *
 * @return array Additional images size data.
 */
function wp_get_additional_image_sizes() {
	global $_wp_additional_image_sizes;

if ( ! $_wp_additional_image_sizes ) {
		$_wp_additional_image_sizes = array();
	}

return $_wp_additional_image_sizes;
}

/**
 * Scales down the default size of an image.
 *
 * This is so that the image is a better fit for the editor and theme.
 *
 * The `$size` parameter accepts either an array or a string. The supported string
 * values are 'thumb' or 'thumbnail' for the given thumbnail size or defaults at
 * 128 width and 96 height in pixels. Also supported for the string value is
 * 'medium', 'medium_large' and 'full'. The 'full' isn't actually supported, but any value other
 * than the supported will result in the content_width size or 500 if that is
 * not set.
 *
 * Finally, there is a filter named {@see 'editor_max_image_size'}, that will be
 * called on the calculated array for width and height, respectively.
 *
 * @since 2.5.0
 *
 * @global int $content_width
 *
 * @param int          $width   Width of the image in pixels.
 * @param int          $height  Height of the image in pixels.
 * @param string|int[] $size    Optional. Image size. Accepts any registered image size name, or an array
 *                              of width and height values in pixels (in that order). Default 'medium'.
 * @param string       $context Optional. Could be 'display' (like in a theme) or 'edit'
 *                              (like inserting into an editor). Default null.
 * @return int[] {
 *     An array of width and height values.
 *
 *     @type int $0 The maximum width in pixels.
 *     @type int $1 The maximum height in pixels.
 * }
 */
function image_constrain_size_for_editor( $width, $height, $size = 'medium', $context = null ) {
	global $content_width;

$_wp_additional_image_sizes = wp_get_additional_image_sizes();

if ( ! $context ) {
		$context = is_admin() ? 'edit' : 'display';
	}

if ( is_array( $size ) ) {
		$max_width  = $size[0];
		$max_height = $size[1];
	} elseif ( 'thumb' === $size || 'thumbnail' === $size ) {
		$max_width  = (int) get_option( 'thumbnail_size_w' );
		$max_height = (int) get_option( 'thumbnail_size_h' );
		// Last chance thumbnail size defaults.
		if ( ! $max_width && ! $max_height ) {
			$max_width  = 128;
			$max_height = 96;
		}
	} elseif ( 'medium' === $size ) {
		$max_width  = (int) get_option( 'medium_size_w' );
		$max_height = (int) get_option( 'medium_size_h' );

} elseif ( 'medium_large' === $size ) {
		$max_width  = (int) get_option( 'medium_large_size_w' );
		$max_height = (int) get_option( 'medium_large_size_h' );

if ( (int) $content_width > 0 ) {
			$max_width = min( (int) $content_width, $max_width );
		}
	} elseif ( 'large' === $size ) {
		/*
		 * We're inserting a large size image into the editor. If it's a really
		 * big image we'll scale it down to fit reasonably within the editor
		 * itself, and within the theme's content width if it's known. The user
		 * can resize it in the editor if they wish.
		 */
		$max_width  = (int) get_option( 'large_size_w' );
		$max_height = (int) get_option( 'large_size_h' );

if ( (int) $content_width > 0 ) {
			$max_width = min( (int) $content_width, $max_width );
		}
	} elseif ( ! empty( $_wp_additional_image_sizes ) && in_array( $size, array_keys( $_wp_additional_image_sizes ), true ) ) {
		$max_width  = (int) $_wp_additional_image_sizes[ $size ]['width'];
		$max_height = (int) $_wp_additional_image_sizes[ $size ]['height'];
		// Only in admin. Assume that theme authors know what they're doing.
		if ( (int) $content_width > 0 && 'edit' === $context ) {
			$max_width = min( (int) $content_width, $max_width );
		}
	} else { // $size === 'full' has no constraint.
		$max_width  = $width;
		$max_height = $height;
	}

/**
	 * Filters the maximum image size dimensions for the editor.
	 *
	 * @since 2.5.0
	 *
	 * @param int[]        $max_image_size {
	 *     An array of width and height values.
	 *
	 *     @type int $0 The maximum width in pixels.
	 *     @type int $1 The maximum height in pixels.
	 * }
	 * @param string|int[] $size     Requested image size. Can be any registered image size name, or
	 *                               an array of width and height values in pixels (in that order).
	 * @param string       $context  The context the image is being resized for.
	 *                               Possible values are 'display' (like in a theme)
	 *                               or 'edit' (like inserting into an editor).
	 */
	list( $max_width, $max_height ) = apply_filters( 'editor_max_image_size', array( $max_width, $max_height ), $size, $context );

return wp_constrain_dimensions( $width, $height, $max_width, $max_height );
}

/**
 * Retrieves width and height attributes using given width and height values.
 *
 * Both attributes are required in the sense that both parameters must have a
 * value, but are optional in that if you set them to false or null, then they
 * will not be added to the returned string.
 *
 * You can set the value using a string, but it will only take numeric values.
 * If you wish to put 'px' after the numbers, then it will be stripped out of
 * the return.
 *
 * @since 2.5.0
 *
 * @param int|string $width  Image width in pixels.
 * @param int|string $height Image height in pixels.
 * @return string HTML attributes for width and, or height.
 */
function image_hwstring( $width, $height ) {
	$out = '';
	if ( $width ) {
		$out .= 'width="' . (int) $width . '" ';
	}
	if ( $height ) {
		$out .= 'height="' . (int) $height . '" ';
	}
	return $out;
}

/**
 * Scales an image to fit a particular size (such as 'thumb' or 'medium').
 *
 * The URL might be the original image, or it might be a resized version. This
 * function won't create a new resized copy, it will just return an already
 * resized one if it exists.
 *
 * A plugin may use the {@see 'image_downsize'} filter to hook into and offer image
 * resizing services for images. The hook must return an array with the same
 * elements that are normally returned from the function.
 *
 * @since 2.5.0
 *
 * @param int          $id   Attachment ID for image.
 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array
 *                           of width and height values in pixels (in that order). Default 'medium'.
 * @return array|false {
 *     Array of image data, or boolean false if no image is available.
 *
 *     @type string $0 Image source URL.
 *     @type int    $1 Image width in pixels.
 *     @type int    $2 Image height in pixels.
 *     @type bool   $3 Whether the image is a resized image.
 * }
 */
function image_downsize( $id, $size = 'medium' ) {
	$is_image = wp_attachment_is_image( $id );

/**
	 * Filters whether to preempt the output of image_downsize().
	 *
	 * Returning a truthy value from the filter will effectively short-circuit
	 * down-sizing the image, returning that value instead.
	 *
	 * @since 2.5.0
	 *
	 * @param bool|array   $downsize Whether to short-circuit the image downsize.
	 * @param int          $id       Attachment ID for image.
	 * @param string|int[] $size     Requested image size. Can be any registered image size name, or
	 *                               an array of width and height values in pixels (in that order).
	 */
	$out = apply_filters( 'image_downsize', false, $id, $size );

if ( $out ) {
		return $out;
	}

$img_url          = wp_get_attachment_url( $id );
	$meta             = wp_get_attachment_metadata( $id );
	$width            = 0;
	$height           = 0;
	$is_intermediate  = false;
	$img_url_basename = wp_basename( $img_url );

/*
	 * If the file isn't an image, attempt to replace its URL with a rendered image from its meta.
	 * Otherwise, a non-image type could be returned.
	 */
	if ( ! $is_image ) {
		if ( ! empty( $meta['sizes']['full'] ) ) {
			$img_url          = str_replace( $img_url_basename, $meta['sizes']['full']['file'], $img_url );
			$img_url_basename = $meta['sizes']['full']['file'];
			$width            = $meta['sizes']['full']['width'];
			$height           = $meta['sizes']['full']['height'];
		} else {
			return false;
		}
	}

// Try for a new style intermediate size.
	$intermediate = image_get_intermediate_size( $id, $size );

if ( $intermediate ) {
		$img_url         = str_replace( $img_url_basename, $intermediate['file'], $img_url );
		$width           = $intermediate['width'];
		$height          = $intermediate['height'];
		$is_intermediate = true;
	} elseif ( 'thumbnail' === $size && ! empty( $meta['thumb'] ) && is_string( $meta['thumb'] ) ) {
		// Fall back to the old thumbnail.
		$imagefile = get_attached_file( $id );
		$thumbfile = str_replace( wp_basename( $imagefile ), wp_basename( $meta['thumb'] ), $imagefile );

if ( file_exists( $thumbfile ) ) {
			$info = wp_getimagesize( $thumbfile );

if ( $info ) {
				$img_url         = str_replace( $img_url_basename, wp_basename( $thumbfile ), $img_url );
				$width           = $info[0];
				$height          = $info[1];
				$is_intermediate = true;
			}
		}
	}

if ( ! $width && ! $height && isset( $meta['width'], $meta['height'] ) ) {
		// Any other type: use the real image.
		$width  = $meta['width'];
		$height = $meta['height'];
	}

if ( $img_url ) {
		// We have the actual image size, but might need to further constrain it if content_width is narrower.
		list( $width, $height ) = image_constrain_size_for_editor( $width, $height, $size );

return array( $img_url, $width, $height, $is_intermediate );
	}

return false;
}

/**
 * Registers a new image size.
 *
 * @since 2.9.0
 *
 * @global array $_wp_additional_image_sizes Associative array of additional image sizes.
 *
 * @param string     $name   Image size identifier.
 * @param int        $width  Optional. Image width in pixels. Default 0.
 * @param int        $height Optional. Image height in pixels. Default 0.
 * @param bool|array $crop   {
 *     Optional. Image cropping behavior. If false, the image will be scaled (default).
 *     If true, image will be cropped to the specified dimensions using center positions.
 *     If an array, the image will be cropped using the array to specify the crop location:
 *
 *     @type string $0 The x crop position. Accepts 'left', 'center', or 'right'.
 *     @type string $1 The y crop position. Accepts 'top', 'center', or 'bottom'.
 * }
 */
function add_image_size( $name, $width = 0, $height = 0, $crop = false ) {
	global $_wp_additional_image_sizes;

$_wp_additional_image_sizes[ $name ] = array(
		'width'  => absint( $width ),
		'height' => absint( $height ),
		'crop'   => $crop,
	);
}

/**
 * Checks if an image size exists.
 *
 * @since 3.9.0
 *
 * @param string $name The image size to check.
 * @return bool True if the image size exists, false if not.
 */
function has_image_size( $name ) {
	$sizes = wp_get_additional_image_sizes();
	return isset( $sizes[ $name ] );
}

/**
 * Removes a new image size.
 *
 * @since 3.9.0
 *
 * @global array $_wp_additional_image_sizes
 *
 * @param string $name The image size to remove.
 * @return bool True if the image size was successfully removed, false on failure.
 */
function remove_image_size( $name ) {
	global $_wp_additional_image_sizes;

if ( isset( $_wp_additional_image_sizes[ $name ] ) ) {
		unset( $_wp_additional_image_sizes[ $name ] );
		return true;
	}

return false;
}

/**
 * Registers an image size for the post thumbnail.
 *
 * @since 2.9.0
 *
 * @see add_image_size() for details on cropping behavior.
 *
 * @param int        $width  Image width in pixels.
 * @param int        $height Image height in pixels.
 * @param bool|array $crop   {
 *     Optional. Image cropping behavior. If false, the image will be scaled (default).
 *     If true, image will be cropped to the specified dimensions using center positions.
 *     If an array, the image will be cropped using the array to specify the crop location:
 *
 *     @type string $0 The x crop position. Accepts 'left', 'center', or 'right'.
 *     @type string $1 The y crop position. Accepts 'top', 'center', or 'bottom'.
 * }
 */
function set_post_thumbnail_size( $width = 0, $height = 0, $crop = false ) {
	add_image_size( 'post-thumbnail', $width, $height, $crop );
}

/**
 * Gets an img tag for an image attachment, scaling it down if requested.
 *
 * The {@see 'get_image_tag_class'} filter allows for changing the class name for the
 * image without having to use regular expressions on the HTML content. The
 * parameters are: what WordPress will use for the class, the Attachment ID,
 * image align value, and the size the image should be.
 *
 * The second filter, {@see 'get_image_tag'}, has the HTML content, which can then be
 * further manipulated by a plugin to change all attribute values and even HTML
 * content.
 *
 * @since 2.5.0
 *
 * @param int          $id    Attachment ID.
 * @param string       $alt   Image description for the alt attribute.
 * @param string       $title Image description for the title attribute.
 * @param string       $align Part of the class name for aligning the image.
 * @param string|int[] $size  Optional. Image size. Accepts any registered image size name, or an array of
 *                            width and height values in pixels (in that order). Default 'medium'.
 * @return string HTML IMG element for given image attachment.
 */
function get_image_tag( $id, $alt, $title, $align, $size = 'medium' ) {

list( $img_src, $width, $height ) = image_downsize( $id, $size );
	$hwstring                         = image_hwstring( $width, $height );

$title = $title ? 'title="' . esc_attr( $title ) . '" ' : '';

$size_class = is_array( $size ) ? implode( 'x', $size ) : $size;
	$class      = 'align' . esc_attr( $align ) . ' size-' . esc_attr( $size_class ) . ' wp-image-' . $id;

/**
	 * Filters the value of the attachment's image tag class attribute.
	 *
	 * @since 2.6.0
	 *
	 * @param string       $class CSS class name or space-separated list of classes.
	 * @param int          $id    Attachment ID.
	 * @param string       $align Part of the class name for aligning the image.
	 * @param string|int[] $size  Requested image size. Can be any registered image size name, or
	 *                            an array of width and height values in pixels (in that order).
	 */
	$class = apply_filters( 'get_image_tag_class', $class, $id, $align, $size );

$html = '<img src="' . esc_url( $img_src ) . '" alt="' . esc_attr( $alt ) . '" ' . $title . $hwstring . 'class="' . $class . '" />';

/**
	 * Filters the HTML content for the image tag.
	 *
	 * @since 2.6.0
	 *
	 * @param string       $html  HTML content for the image.
	 * @param int          $id    Attachment ID.
	 * @param string       $alt   Image description for the alt attribute.
	 * @param string       $title Image description for the title attribute.
	 * @param string       $align Part of the class name for aligning the image.
	 * @param string|int[] $size  Requested image size. Can be any registered image size name, or
	 *                            an array of width and height values in pixels (in that order).
	 */
	return apply_filters( 'get_image_tag', $html, $id, $alt, $title, $align, $size );
}

/**
 * Calculates the new dimensions for a down-sampled image.
 *
 * If either width or height are empty, no constraint is applied on
 * that dimension.
 *
 * @since 2.5.0
 *
 * @param int $current_width  Current width of the image.
 * @param int $current_height Current height of the image.
 * @param int $max_width      Optional. Max width in pixels to constrain to. Default 0.
 * @param int $max_height     Optional. Max height in pixels to constrain to. Default 0.
 * @return int[] {
 *     An array of width and height values.
 *
 *     @type int $0 The width in pixels.
 *     @type int $1 The height in pixels.
 * }
 */
function wp_constrain_dimensions( $current_width, $current_height, $max_width = 0, $max_height = 0 ) {
	if ( ! $max_width && ! $max_height ) {
		return array( $current_width, $current_height );
	}

$width_ratio  = 1.0;
	$height_ratio = 1.0;
	$did_width    = false;
	$did_height   = false;

if ( $max_width > 0 && $current_width > 0 && $current_width > $max_width ) {
		$width_ratio = $max_width / $current_width;
		$did_width   = true;
	}

if ( $max_height > 0 && $current_height > 0 && $current_height > $max_height ) {
		$height_ratio = $max_height / $current_height;
		$did_height   = true;
	}

// Calculate the larger/smaller ratios.
	$smaller_ratio = min( $width_ratio, $height_ratio );
	$larger_ratio  = max( $width_ratio, $height_ratio );

if ( (int) round( $current_width * $larger_ratio ) > $max_width || (int) round( $current_height * $larger_ratio ) > $max_height ) {
		// The larger ratio is too big. It would result in an overflow.
		$ratio = $smaller_ratio;
	} else {
		// The larger ratio fits, and is likely to be a more "snug" fit.
		$ratio = $larger_ratio;
	}

// Very small dimensions may result in 0, 1 should be the minimum.
	$w = max( 1, (int) round( $current_width * $ratio ) );
	$h = max( 1, (int) round( $current_height * $ratio ) );

/*
	 * Sometimes, due to rounding, we'll end up with a result like this:
	 * 465x700 in a 177x177 box is 117x176... a pixel short.
	 * We also have issues with recursive calls resulting in an ever-changing result.
	 * Constraining to the result of a constraint should yield the original result.
	 * Thus we look for dimensions that are one pixel shy of the max value and bump them up.
	 */

// Note: $did_width means it is possible $smaller_ratio == $width_ratio.
	if ( $did_width && $w === $max_width - 1 ) {
		$w = $max_width; // Round it up.
	}

// Note: $did_height means it is possible $smaller_ratio == $height_ratio.
	if ( $did_height && $h === $max_height - 1 ) {
		$h = $max_height; // Round it up.
	}

/**
	 * Filters dimensions to constrain down-sampled images to.
	 *
	 * @since 4.1.0
	 *
	 * @param int[] $dimensions     {
	 *     An array of width and height values.
	 *
	 *     @type int $0 The width in pixels.
	 *     @type int $1 The height in pixels.
	 * }
	 * @param int   $current_width  The current width of the image.
	 * @param int   $current_height The current height of the image.
	 * @param int   $max_width      The maximum width permitted.
	 * @param int   $max_height     The maximum height permitted.
	 */
	return apply_filters( 'wp_constrain_dimensions', array( $w, $h ), $current_width, $current_height, $max_width, $max_height );
}

/**
 * Retrieves calculated resize dimensions for use in WP_Image_Editor.
 *
 * Calculates dimensions and coordinates for a resized image that fits
 * within a specified width and height.
 *
 * @since 2.5.0
 *
 * @param int        $orig_w Original width in pixels.
 * @param int        $orig_h Original height in pixels.
 * @param int        $dest_w New width in pixels.
 * @param int        $dest_h New height in pixels.
 * @param bool|array $crop   {
 *     Optional. Image cropping behavior. If false, the image will be scaled (default).
 *     If true, image will be cropped to the specified dimensions using center positions.
 *     If an array, the image will be cropped using the array to specify the crop location:
 *
 *     @type string $0 The x crop position. Accepts 'left', 'center', or 'right'.
 *     @type string $1 The y crop position. Accepts 'top', 'center', or 'bottom'.
 * }
 * @return array|false Returned array matches parameters for `imagecopyresampled()`. False on failure.
 */
function image_resize_dimensions( $orig_w, $orig_h, $dest_w, $dest_h, $crop = false ) {

if ( $orig_w <= 0 || $orig_h <= 0 ) {
		return false;
	}
	// At least one of $dest_w or $dest_h must be specific.
	if ( $dest_w <= 0 && $dest_h <= 0 ) {
		return false;
	}

/**
	 * Filters whether to preempt calculating the image resize dimensions.
	 *
	 * Returning a non-null value from the filter will effectively short-circuit
	 * image_resize_dimensions(), returning that value instead.
	 *
	 * @since 3.4.0
	 *
	 * @param null|mixed $null   Whether to preempt output of the resize dimensions.
	 * @param int        $orig_w Original width in pixels.
	 * @param int        $orig_h Original height in pixels.
	 * @param int        $dest_w New width in pixels.
	 * @param int        $dest_h New height in pixels.
	 * @param bool|array $crop   Whether to crop image to specified width and height or resize.
	 *                           An array can specify positioning of the crop area. Default false.
	 */
	$output = apply_filters( 'image_resize_dimensions', null, $orig_w, $orig_h, $dest_w, $dest_h, $crop );

if ( null !== $output ) {
		return $output;
	}

// Stop if the destination size is larger than the original image dimensions.
	if ( empty( $dest_h ) ) {
		if ( $orig_w < $dest_w ) {
			return false;
		}
	} elseif ( empty( $dest_w ) ) {
		if ( $orig_h < $dest_h ) {
			return false;
		}
	} else {
		if ( $orig_w < $dest_w && $orig_h < $dest_h ) {
			return false;
		}
	}

if ( $crop ) {
		/*
		 * Crop the largest possible portion of the original image that we can size to $dest_w x $dest_h.
		 * Note that the requested crop dimensions are used as a maximum bounding box for the original image.
		 * If the original image's width or height is less than the requested width or height
		 * only the greater one will be cropped.
		 * For example when the original image is 600x300, and the requested crop dimensions are 400x400,
		 * the resulting image will be 400x300.
		 */
		$aspect_ratio = $orig_w / $orig_h;
		$new_w        = min( $dest_w, $orig_w );
		$new_h        = min( $dest_h, $orig_h );

if ( ! $new_w ) {
			$new_w = (int) round( $new_h * $aspect_ratio );
		}

if ( ! $new_h ) {
			$new_h = (int) round( $new_w / $aspect_ratio );
		}

$size_ratio = max( $new_w / $orig_w, $new_h / $orig_h );

$crop_w = round( $new_w / $size_ratio );
		$crop_h = round( $new_h / $size_ratio );

if ( ! is_array( $crop ) || count( $crop ) !== 2 ) {
			$crop = array( 'center', 'center' );
		}

list( $x, $y ) = $crop;

if ( 'left' === $x ) {
			$s_x = 0;
		} elseif ( 'right' === $x ) {
			$s_x = $orig_w - $crop_w;
		} else {
			$s_x = floor( ( $orig_w - $crop_w ) / 2 );
		}

if ( 'top' === $y ) {
			$s_y = 0;
		} elseif ( 'bottom' === $y ) {
			$s_y = $orig_h - $crop_h;
		} else {
			$s_y = floor( ( $orig_h - $crop_h ) / 2 );
		}
	} else {
		// Resize using $dest_w x $dest_h as a maximum bounding box.
		$crop_w = $orig_w;
		$crop_h = $orig_h;

$s_x = 0;
		$s_y = 0;

list( $new_w, $new_h ) = wp_constrain_dimensions( $orig_w, $orig_h, $dest_w, $dest_h );
	}

if ( wp_fuzzy_number_match( $new_w, $orig_w ) && wp_fuzzy_number_match( $new_h, $orig_h ) ) {
		// The new size has virtually the same dimensions as the original image.

/**
		 * Filters whether to proceed with making an image sub-size with identical dimensions
		 * with the original/source image. Differences of 1px may be due to rounding and are ignored.
		 *
		 * @since 5.3.0
		 *
		 * @param bool $proceed The filtered value.
		 * @param int  $orig_w  Original image width.
		 * @param int  $orig_h  Original image height.
		 */
		$proceed = (bool) apply_filters( 'wp_image_resize_identical_dimensions', false, $orig_w, $orig_h );

if ( ! $proceed ) {
			return false;
		}
	}

/*
	 * The return array matches the parameters to imagecopyresampled().
	 * int dst_x, int dst_y, int src_x, int src_y, int dst_w, int dst_h, int src_w, int src_h
	 */
	return array( 0, 0, (int) $s_x, (int) $s_y, (int) $new_w, (int) $new_h, (int) $crop_w, (int) $crop_h );
}

/**
 * Resizes an image to make a thumbnail or intermediate size.
 *
 * The returned array has the file size, the image width, and image height. The
 * {@see 'image_make_intermediate_size'} filter can be used to hook in and change the
 * values of the returned array. The only parameter is the resized file path.
 *
 * @since 2.5.0
 *
 * @param string     $file   File path.
 * @param int        $width  Image width.
 * @param int        $height Image height.
 * @param bool|array $crop   {
 *     Optional. Image cropping behavior. If false, the image will be scaled (default).
 *     If true, image will be cropped to the specified dimensions using center positions.
 *     If an array, the image will be cropped using the array to specify the crop location:
 *
 *     @type string $0 The x crop position. Accepts 'left', 'center', or 'right'.
 *     @type string $1 The y crop position. Accepts 'top', 'center', or 'bottom'.
 * }
 * @return array|false Metadata array on success. False if no image was created.
 */
function image_make_intermediate_size( $file, $width, $height, $crop = false ) {
	if ( $width || $height ) {
		$editor = wp_get_image_editor( $file );

if ( is_wp_error( $editor ) || is_wp_error( $editor->resize( $width, $height, $crop ) ) ) {
			return false;
		}

$resized_file = $editor->save();

if ( ! is_wp_error( $resized_file ) && $resized_file ) {
			unset( $resized_file['path'] );
			return $resized_file;
		}
	}
	return false;
}

/**
 * Helper function to test if aspect ratios for two images match.
 *
 * @since 4.6.0
 *
 * @param int $source_width  Width of the first image in pixels.
 * @param int $source_height Height of the first image in pixels.
 * @param int $target_width  Width of the second image in pixels.
 * @param int $target_height Height of the second image in pixels.
 * @return bool True if aspect ratios match within 1px. False if not.
 */
function wp_image_matches_ratio( $source_width, $source_height, $target_width, $target_height ) {
	/*
	 * To test for varying crops, we constrain the dimensions of the larger image
	 * to the dimensions of the smaller image and see if they match.
	 */
	if ( $source_width > $target_width ) {
		$constrained_size = wp_constrain_dimensions( $source_width, $source_height, $target_width );
		$expected_size    = array( $target_width, $target_height );
	} else {
		$constrained_size = wp_constrain_dimensions( $target_width, $target_height, $source_width );
		$expected_size    = array( $source_width, $source_height );
	}

// If the image dimensions are within 1px of the expected size, we consider it a match.
	$matched = ( wp_fuzzy_number_match( $constrained_size[0], $expected_size[0] ) && wp_fuzzy_number_match( $constrained_size[1], $expected_size[1] ) );

return $matched;
}

/**
 * Retrieves the image's intermediate size (resized) path, width, and height.
 *
 * The $size parameter can be an array with the width and height respectively.
 * If the size matches the 'sizes' metadata array for width and height, then it
 * will be used. If there is no direct match, then the nearest image size larger
 * than the specified size will be used. If nothing is found, then the function
 * will break out and return false.
 *
 * The metadata 'sizes' is used for compatible sizes that can be used for the
 * parameter $size value.
 *
 * The url path will be given, when the $size parameter is a string.
 *
 * If you are passing an array for the $size, you should consider using
 * add_image_size() so that a cropped version is generated. It's much more
 * efficient than having to find the closest-sized image and then having the
 * browser scale down the image.
 *
 * @since 2.5.0
 *
 * @param int          $post_id Attachment ID.
 * @param string|int[] $size    Optional. Image size. Accepts any registered image size name, or an array
 *                              of width and height values in pixels (in that order). Default 'thumbnail'.
 * @return array|false {
 *     Array of file relative path, width, and height on success. Additionally includes absolute
 *     path and URL if registered size is passed to `$size` parameter. False on failure.
 *
 *     @type string $file   Filename of image.
 *     @type int    $width  Width of image in pixels.
 *     @type int    $height Height of image in pixels.
 *     @type string $path   Path of image relative to uploads directory.
 *     @type string $url    URL of image.
 * }
 */
function image_get_intermediate_size( $post_id, $size = 'thumbnail' ) {
	$imagedata = wp_get_attachment_metadata( $post_id );

if ( ! $size || ! is_array( $imagedata ) || empty( $imagedata['sizes'] ) ) {
		return false;
	}

$data = array();

// Find the best match when '$size' is an array.
	if ( is_array( $size ) ) {
		$candidates = array();

if ( ! isset( $imagedata['file'] ) && isset( $imagedata['sizes']['full'] ) ) {
			$imagedata['height'] = $imagedata['sizes']['full']['height'];
			$imagedata['width']  = $imagedata['sizes']['full']['width'];
		}

foreach ( $imagedata['sizes'] as $_size => $data ) {
			// If there's an exact match to an existing image size, short circuit.
			if ( (int) $data['width'] === (int) $size[0] && (int) $data['height'] === (int) $size[1] ) {
				$candidates[ $data['width'] * $data['height'] ] = $data;
				break;
			}

// If it's not an exact match, consider larger sizes with the same aspect ratio.
			if ( $data['width'] >= $size[0] && $data['height'] >= $size[1] ) {
				// If '0' is passed to either size, we test ratios against the original file.
				if ( 0 === $size[0] || 0 === $size[1] ) {
					$same_ratio = wp_image_matches_ratio( $data['width'], $data['height'], $imagedata['width'], $imagedata['height'] );
				} else {
					$same_ratio = wp_image_matches_ratio( $data['width'], $data['height'], $size[0], $size[1] );
				}

if ( $same_ratio ) {
					$candidates[ $data['width'] * $data['height'] ] = $data;
				}
			}
		}

if ( ! empty( $candidates ) ) {
			// Sort the array by size if we have more than one candidate.
			if ( 1 < count( $candidates ) ) {
				ksort( $candidates );
			}

$data = array_shift( $candidates );
			/*
			* When the size requested is smaller than the thumbnail dimensions, we
			* fall back to the thumbnail size to maintain backward compatibility with
			* pre 4.6 versions of WordPress.
			*/
		} elseif ( ! empty( $imagedata['sizes']['thumbnail'] ) && $imagedata['sizes']['thumbnail']['width'] >= $size[0] && $imagedata['sizes']['thumbnail']['width'] >= $size[1] ) {
			$data = $imagedata['sizes']['thumbnail'];
		} else {
			return false;
		}

// Constrain the width and height attributes to the requested values.
		list( $data['width'], $data['height'] ) = image_constrain_size_for_editor( $data['width'], $data['height'], $size );

} elseif ( ! empty( $imagedata['sizes'][ $size ] ) ) {
		$data = $imagedata['sizes'][ $size ];
	}

// If we still don't have a match at this point, return false.
	if ( empty( $data ) ) {
		return false;
	}

// Include the full filesystem path of the intermediate file.
	if ( empty( $data['path'] ) && ! empty( $data['file'] ) && ! empty( $imagedata['file'] ) ) {
		$file_url     = wp_get_attachment_url( $post_id );
		$data['path'] = path_join( dirname( $imagedata['file'] ), $data['file'] );
		$data['url']  = path_join( dirname( $file_url ), $data['file'] );
	}

/**
	 * Filters the output of image_get_intermediate_size()
	 *
	 * @since 4.4.0
	 *
	 * @see image_get_intermediate_size()
	 *
	 * @param array        $data    Array of file relative path, width, and height on success. May also include
	 *                              file absolute path and URL.
	 * @param int          $post_id The ID of the image attachment.
	 * @param string|int[] $size    Requested image size. Can be any registered image size name, or
	 *                              an array of width and height values in pixels (in that order).
	 */
	return apply_filters( 'image_get_intermediate_size', $data, $post_id, $size );
}

/**
 * Gets the available intermediate image size names.
 *
 * @since 3.0.0
 *
 * @return string[] An array of image size names.
 */
function get_intermediate_image_sizes() {
	$default_sizes    = array( 'thumbnail', 'medium', 'medium_large', 'large' );
	$additional_sizes = wp_get_additional_image_sizes();

if ( ! empty( $additional_sizes ) ) {
		$default_sizes = array_merge( $default_sizes, array_keys( $additional_sizes ) );
	}

/**
	 * Filters the list of intermediate image sizes.
	 *
	 * @since 2.5.0
	 *
	 * @param string[] $default_sizes An array of intermediate image size names. Defaults
	 *                                are 'thumbnail', 'medium', 'medium_large', 'large'.
	 */
	return apply_filters( 'intermediate_image_sizes', $default_sizes );
}

/**
 * Returns a normalized list of all currently registered image sub-sizes.
 *
 * @since 5.3.0
 * @uses wp_get_additional_image_sizes()
 * @uses get_intermediate_image_sizes()
 *
 * @return array[] Associative array of arrays of image sub-size information,
 *                 keyed by image size name.
 */
function wp_get_registered_image_subsizes() {
	$additional_sizes = wp_get_additional_image_sizes();
	$all_sizes        = array();

foreach ( get_intermediate_image_sizes() as $size_name ) {
		$size_data = array(
			'width'  => 0,
			'height' => 0,
			'crop'   => false,
		);

if ( isset( $additional_sizes[ $size_name ]['width'] ) ) {
			// For sizes added by plugins and themes.
			$size_data['width'] = (int) $additional_sizes[ $size_name ]['width'];
		} else {
			// For default sizes set in options.
			$size_data['width'] = (int) get_option( "{$size_name}_size_w" );
		}

if ( isset( $additional_sizes[ $size_name ]['height'] ) ) {
			$size_data['height'] = (int) $additional_sizes[ $size_name ]['height'];
		} else {
			$size_data['height'] = (int) get_option( "{$size_name}_size_h" );
		}

if ( empty( $size_data['width'] ) && empty( $size_data['height'] ) ) {
			// This size isn't set.
			continue;
		}

if ( isset( $additional_sizes[ $size_name ]['crop'] ) ) {
			$size_data['crop'] = $additional_sizes[ $size_name ]['crop'];
		} else {
			$size_data['crop'] = get_option( "{$size_name}_crop" );
		}

if ( ! is_array( $size_data['crop'] ) || empty( $size_data['crop'] ) ) {
			$size_data['crop'] = (bool) $size_data['crop'];
		}

$all_sizes[ $size_name ] = $size_data;
	}

return $all_sizes;
}

/**
 * Retrieves an image to represent an attachment.
 *
 * @since 2.5.0
 *
 * @param int          $attachment_id Image attachment ID.
 * @param string|int[] $size          Optional. Image size. Accepts any registered image size name, or an array of
 *                                    width and height values in pixels (in that order). Default 'thumbnail'.
 * @param bool         $icon          Optional. Whether the image should fall back to a mime type icon. Default false.
 * @return array|false {
 *     Array of image data, or boolean false if no image is available.
 *
 *     @type string $0 Image source URL.
 *     @type int    $1 Image width in pixels.
 *     @type int    $2 Image height in pixels.
 *     @type bool   $3 Whether the image is a resized image.
 * }
 */
function wp_get_attachment_image_src( $attachment_id, $size = 'thumbnail', $icon = false ) {
	// Get a thumbnail or intermediate image if there is one.
	$image = image_downsize( $attachment_id, $size );
	if ( ! $image ) {
		$src = false;

if ( $icon ) {
			$src = wp_mime_type_icon( $attachment_id, '.svg' );

if ( $src ) {
				/** This filter is documented in wp-includes/post.php */
				$icon_dir = apply_filters( 'icon_dir', ABSPATH . WPINC . '/images/media' );

$src_file = $icon_dir . '/' . wp_basename( $src );

list( $width, $height ) = wp_getimagesize( $src_file );

$ext = strtolower( substr( $src_file, -4 ) );

if ( '.svg' === $ext ) {
					// SVG does not have true dimensions, so this assigns width and height directly.
					$width  = 48;
					$height = 64;
				} else {
					list( $width, $height ) = wp_getimagesize( $src_file );
				}
			}
		}

if ( $src && $width && $height ) {
			$image = array( $src, $width, $height, false );
		}
	}
	/**
	 * Filters the attachment image source result.
	 *
	 * @since 4.3.0
	 *
	 * @param array|false  $image         {
	 *     Array of image data, or boolean false if no image is available.
	 *
	 *     @type string $0 Image source URL.
	 *     @type int    $1 Image width in pixels.
	 *     @type int    $2 Image height in pixels.
	 *     @type bool   $3 Whether the image is a resized image.
	 * }
	 * @param int          $attachment_id Image attachment ID.
	 * @param string|int[] $size          Requested image size. Can be any registered image size name, or
	 *                                    an array of width and height values in pixels (in that order).
	 * @param bool         $icon          Whether the image should be treated as an icon.
	 */
	return apply_filters( 'wp_get_attachment_image_src', $image, $attachment_id, $size, $icon );
}

/**
 * Gets an HTML img element representing an image attachment.
 *
 * While `$size` will accept an array, it is better to register a size with
 * add_image_size() so that a cropped version is generated. It's much more
 * efficient than having to find the closest-sized image and then having the
 * browser scale down the image.
 *
 * @since 2.5.0
 * @since 4.4.0 The `$srcset` and `$sizes` attributes were added.
 * @since 5.5.0 The `$loading` attribute was added.
 * @since 6.1.0 The `$decoding` attribute was added.
 *
 * @param int          $attachment_id Image attachment ID.
 * @param string|int[] $size          Optional. Image size. Accepts any registered image size name, or an array
 *                                    of width and height values in pixels (in that order). Default 'thumbnail'.
 * @param bool         $icon          Optional. Whether the image should be treated as an icon. Default false.
 * @param string|array $attr {
 *     Optional. Attributes for the image markup.
 *
 *     @type string       $src           Image attachment URL.
 *     @type string       $class         CSS class name or space-separated list of classes.
 *                                       Default `attachment-$size_class size-$size_class`,
 *                                       where `$size_class` is the image size being requested.
 *     @type string       $alt           Image description for the alt attribute.
 *     @type string       $srcset        The 'srcset' attribute value.
 *     @type string       $sizes         The 'sizes' attribute value.
 *     @type string|false $loading       The 'loading' attribute value. Passing a value of false
 *                                       will result in the attribute being omitted for the image.
 *                                       Default determined by {@see wp_get_loading_optimization_attributes()}.
 *     @type string       $decoding      The 'decoding' attribute value. Possible values are
 *                                       'async' (default), 'sync', or 'auto'. Passing false or an empty
 *                                       string will result in the attribute being omitted.
 *     @type string       $fetchpriority The 'fetchpriority' attribute value, whether `high`, `low`, or `auto`.
 *                                       Default determined by {@see wp_get_loading_optimization_attributes()}.
 * }
 * @return string HTML img element or empty string on failure.
 */
function wp_get_attachment_image( $attachment_id, $size = 'thumbnail', $icon = false, $attr = '' ) {
	$html  = '';
	$image = wp_get_attachment_image_src( $attachment_id, $size, $icon );

if ( $image ) {
		list( $src, $width, $height ) = $image;

$attachment = get_post( $attachment_id );
		$hwstring   = image_hwstring( $width, $height );
		$size_class = $size;

if ( is_array( $size_class ) ) {
			$size_class = implode( 'x', $size_class );
		}

$default_attr = array(
			'src'   => $src,
			'class' => "attachment-$size_class size-$size_class",
			'alt'   => trim( strip_tags( get_post_meta( $attachment_id, '_wp_attachment_image_alt', true ) ) ),
		);

/**
		 * Filters the context in which wp_get_attachment_image() is used.
		 *
		 * @since 6.3.0
		 *
		 * @param string $context The context. Default 'wp_get_attachment_image'.
		 */
		$context = apply_filters( 'wp_get_attachment_image_context', 'wp_get_attachment_image' );
		$attr    = wp_parse_args( $attr, $default_attr );

$loading_attr              = $attr;
		$loading_attr['width']     = $width;
		$loading_attr['height']    = $height;
		$loading_optimization_attr = wp_get_loading_optimization_attributes(
			'img',
			$loading_attr,
			$context
		);

// Add loading optimization attributes if not available.
		$attr = array_merge( $attr, $loading_optimization_attr );

// Omit the `decoding` attribute if the value is invalid according to the spec.
		if ( empty( $attr['decoding'] ) || ! in_array( $attr['decoding'], array( 'async', 'sync', 'auto' ), true ) ) {
			unset( $attr['decoding'] );
		}

/*
		 * If the default value of `lazy` for the `loading` attribute is overridden
		 * to omit the attribute for this image, ensure it is not included.
		 */
		if ( isset( $attr['loading'] ) && ! $attr['loading'] ) {
			unset( $attr['loading'] );
		}

// If the `fetchpriority` attribute is overridden and set to false or an empty string.
		if ( isset( $attr['fetchpriority'] ) && ! $attr['fetchpriority'] ) {
			unset( $attr['fetchpriority'] );
		}

// Generate 'srcset' and 'sizes' if not already present.
		if ( empty( $attr['srcset'] ) ) {
			$image_meta = wp_get_attachment_metadata( $attachment_id );

if ( is_array( $image_meta ) ) {
				$size_array = array( absint( $width ), absint( $height ) );
				$srcset     = wp_calculate_image_srcset( $size_array, $src, $image_meta, $attachment_id );
				$sizes      = wp_calculate_image_sizes( $size_array, $src, $image_meta, $attachment_id );

if ( $srcset && ( $sizes || ! empty( $attr['sizes'] ) ) ) {
					$attr['srcset'] = $srcset;

if ( empty( $attr['sizes'] ) ) {
						$attr['sizes'] = $sizes;
					}
				}
			}
		}

/** This filter is documented in wp-includes/media.php */
		$add_auto_sizes = apply_filters( 'wp_img_tag_add_auto_sizes', true );

// Adds 'auto' to the sizes attribute if applicable.
		if (
			$add_auto_sizes &&
			isset( $attr['loading'] ) &&
			'lazy' === $attr['loading'] &&
			isset( $attr['sizes'] ) &&
			! wp_sizes_attribute_includes_valid_auto( $attr['sizes'] )
		) {
			$attr['sizes'] = 'auto, ' . $attr['sizes'];
		}

/**
		 * Filters the list of attachment image attributes.
		 *
		 * @since 2.8.0
		 *
		 * @param string[]     $attr       Array of attribute values for the image markup, keyed by attribute name.
		 *                                 See wp_get_attachment_image().
		 * @param WP_Post      $attachment Image attachment post.
		 * @param string|int[] $size       Requested image size. Can be any registered image size name, or
		 *                                 an array of width and height values in pixels (in that order).
		 */
		$attr = apply_filters( 'wp_get_attachment_image_attributes', $attr, $attachment, $size );

$attr = array_map( 'esc_attr', $attr );
		$html = rtrim( "<img $hwstring" );

foreach ( $attr as $name => $value ) {
			$html .= " $name=" . '"' . $value . '"';
		}

$html .= ' />';
	}

/**
	 * Filters the HTML img element representing an image attachment.
	 *
	 * @since 5.6.0
	 *
	 * @param string       $html          HTML img element or empty string on failure.
	 * @param int          $attachment_id Image attachment ID.
	 * @param string|int[] $size          Requested image size. Can be any registered image size name, or
	 *                                    an array of width and height values in pixels (in that order).
	 * @param bool         $icon          Whether the image should be treated as an icon.
	 * @param string[]     $attr          Array of attribute values for the image markup, keyed by attribute name.
	 *                                    See wp_get_attachment_image().
	 */
	return apply_filters( 'wp_get_attachment_image', $html, $attachment_id, $size, $icon, $attr );
}

/**
 * Gets the URL of an image attachment.
 *
 * @since 4.4.0
 *
 * @param int          $attachment_id Image attachment ID.
 * @param string|int[] $size          Optional. Image size. Accepts any registered image size name, or an array of
 *                                    width and height values in pixels (in that order). Default 'thumbnail'.
 * @param bool         $icon          Optional. Whether the image should be treated as an icon. Default false.
 * @return string|false Attachment URL or false if no image is available. If `$size` does not match
 *                      any registered image size, the original image URL will be returned.
 */
function wp_get_attachment_image_url( $attachment_id, $size = 'thumbnail', $icon = false ) {
	$image = wp_get_attachment_image_src( $attachment_id, $size, $icon );
	return isset( $image[0] ) ? $image[0] : false;
}

/**
 * Gets the attachment path relative to the upload directory.
 *
 * @since 4.4.1
 * @access private
 *
 * @param string $file Attachment file name.
 * @return string Attachment path relative to the upload directory.
 */
function _wp_get_attachment_relative_path( $file ) {
	$dirname = dirname( $file );

if ( '.' === $dirname ) {
		return '';
	}

if ( str_contains( $dirname, 'wp-content/uploads' ) ) {
		// Get the directory name relative to the upload directory (back compat for pre-2.7 uploads).
		$dirname = substr( $dirname, strpos( $dirname, 'wp-content/uploads' ) + 18 );
		$dirname = ltrim( $dirname, '/' );
	}

return $dirname;
}

/**
 * Gets the image size as array from its meta data.
 *
 * Used for responsive images.
 *
 * @since 4.4.0
 * @access private
 *
 * @param string $size_name  Image size. Accepts any registered image size name.
 * @param array  $image_meta The image meta data.
 * @return array|false {
 *     Array of width and height or false if the size isn't present in the meta data.
 *
 *     @type int $0 Image width.
 *     @type int $1 Image height.
 * }
 */
function _wp_get_image_size_from_meta( $size_name, $image_meta ) {
	if ( 'full' === $size_name ) {
		return array(
			absint( $image_meta['width'] ),
			absint( $image_meta['height'] ),
		);
	} elseif ( ! empty( $image_meta['sizes'][ $size_name ] ) ) {
		return array(
			absint( $image_meta['sizes'][ $size_name ]['width'] ),
			absint( $image_meta['sizes'][ $size_name ]['height'] ),
		);
	}

return false;
}

/**
 * Retrieves the value for an image attachment's 'srcset' attribute.
 *
 * @since 4.4.0
 *
 * @see wp_calculate_image_srcset()
 *
 * @param int          $attachment_id Image attachment ID.
 * @param string|int[] $size          Optional. Image size. Accepts any registered image size name, or an array of
 *                                    width and height values in pixels (in that order). Default 'medium'.
 * @param array|null   $image_meta    Optional. The image meta data as returned by 'wp_get_attachment_metadata()'.
 *                                    Default null.
 * @return string|false A 'srcset' value string or false.
 */
function wp_get_attachment_image_srcset( $attachment_id, $size = 'medium', $image_meta = null ) {
	$image = wp_get_attachment_image_src( $attachment_id, $size );

if ( ! $image ) {
		return false;
	}

if ( ! is_array( $image_meta ) ) {
		$image_meta = wp_get_attachment_metadata( $attachment_id );
	}

$image_src  = $image[0];
	$size_array = array(
		absint( $image[1] ),
		absint( $image[2] ),
	);

return wp_calculate_image_srcset( $size_array, $image_src, $image_meta, $attachment_id );
}

/**
 * A helper function to calculate the image sources to include in a 'srcset' attribute.
 *
 * @since 4.4.0
 *
 * @param int[]  $size_array    {
 *     An array of width and height values.
 *
 *     @type int $0 The width in pixels.
 *     @type int $1 The height in pixels.
 * }
 * @param string $image_src     The 'src' of the image.
 * @param array  $image_meta    The image meta data as returned by 'wp_get_attachment_metadata()'.
 * @param int    $attachment_id Optional. The image attachment ID. Default 0.
 * @return string|false The 'srcset' attribute value. False on error or when only one source exists.
 */
function wp_calculate_image_srcset( $size_array, $image_src, $image_meta, $attachment_id = 0 ) {
	/**
	 * Pre-filters the image meta to be able to fix inconsistencies in the stored data.
	 *
	 * @since 4.5.0
	 *
	 * @param array  $image_meta    The image meta data as returned by 'wp_get_attachment_metadata()'.
	 * @param int[]  $size_array    {
	 *     An array of requested width and height values.
	 *
	 *     @type int $0 The width in pixels.
	 *     @type int $1 The height in pixels.
	 * }
	 * @param string $image_src     The 'src' of the image.
	 * @param int    $attachment_id The image attachment ID or 0 if not supplied.
	 */
	$image_meta = apply_filters( 'wp_calculate_image_srcset_meta', $image_meta, $size_array, $image_src, $attachment_id );

if ( empty( $image_meta['sizes'] ) || ! isset( $image_meta['file'] ) || strlen( $image_meta['file'] ) < 4 ) {
		return false;
	}

$image_sizes = $image_meta['sizes'];

// Get the width and height of the image.
	$image_width  = (int) $size_array[0];
	$image_height = (int) $size_array[1];

// Bail early if error/no width.
	if ( $image_width < 1 ) {
		return false;
	}

$image_basename = wp_basename( $image_meta['file'] );

/*
	 * WordPress flattens animated GIFs into one frame when generating intermediate sizes.
	 * To avoid hiding animation in user content, if src is a full size GIF, a srcset attribute is not generated.
	 * If src is an intermediate size GIF, the full size is excluded from srcset to keep a flattened GIF from becoming animated.
	 */
	if ( ! isset( $image_sizes['thumbnail']['mime-type'] ) || 'image/gif' !== $image_sizes['thumbnail']['mime-type'] ) {
		$image_sizes[] = array(
			'width'  => $image_meta['width'],
			'height' => $image_meta['height'],
			'file'   => $image_basename,
		);
	} elseif ( str_contains( $image_src, $image_meta['file'] ) ) {
		return false;
	}

// Retrieve the uploads sub-directory from the full size image.
	$dirname = _wp_get_attachment_relative_path( $image_meta['file'] );

if ( $dirname ) {
		$dirname = trailingslashit( $dirname );
	}

$upload_dir    = wp_get_upload_dir();
	$image_baseurl = trailingslashit( $upload_dir['baseurl'] ) . $dirname;

/*
	 * If currently on HTTPS, prefer HTTPS URLs when we know they're supported by the domain
	 * (which is to say, when they share the domain name of the current request).
	 */
	if ( is_ssl() && ! str_starts_with( $image_baseurl, 'https' ) ) {
		/*
		 * Since the `Host:` header might contain a port, it should
		 * be compared against the image URL using the same port.
		 */
		$parsed = parse_url( $image_baseurl );
		$domain = isset( $parsed['host'] ) ? $parsed['host'] : '';

if ( isset( $parsed['port'] ) ) {
			$domain .= ':' . $parsed['port'];
		}

if ( $_SERVER['HTTP_HOST'] === $domain ) {
			$image_baseurl = set_url_scheme( $image_baseurl, 'https' );
		}
	}

/*
	 * Images that have been edited in WordPress after being uploaded will
	 * contain a unique hash. Look for that hash and use it later to filter
	 * out images that are leftovers from previous versions.
	 */
	$image_edited = preg_match( '/-e[0-9]{13}/', wp_basename( $image_src ), $image_edit_hash );

/**
	 * Filters the maximum image width to be included in a 'srcset' attribute.
	 *
	 * @since 4.4.0
	 *
	 * @param int   $max_width  The maximum image width to be included in the 'srcset'. Default '2048'.
	 * @param int[] $size_array {
	 *     An array of requested width and height values.
	 *
	 *     @type int $0 The width in pixels.
	 *     @type int $1 The height in pixels.
	 * }
	 */
	$max_srcset_image_width = apply_filters( 'max_srcset_image_width', 2048, $size_array );

// Array to hold URL candidates.
	$sources = array();

/**
	 * To make sure the ID matches our image src, we will check to see if any sizes in our attachment
	 * meta match our $image_src. If no matches are found we don't return a srcset to avoid serving
	 * an incorrect image. See #35045.
	 */
	$src_matched = false;

/*
	 * Loop through available images. Only use images that are resized
	 * versions of the same edit.
	 */
	foreach ( $image_sizes as $image ) {
		$is_src = false;

// Check if image meta isn't corrupted.
		if ( ! is_array( $image ) ) {
			continue;
		}

// If the file name is part of the `src`, we've confirmed a match.
		if ( ! $src_matched && str_contains( $image_src, $dirname . $image['file'] ) ) {
			$src_matched = true;
			$is_src      = true;
		}

// Filter out images that are from previous edits.
		if ( $image_edited && ! strpos( $image['file'], $image_edit_hash[0] ) ) {
			continue;
		}

/*
		 * Filters out images that are wider than '$max_srcset_image_width' unless
		 * that file is in the 'src' attribute.
		 */
		if ( $max_srcset_image_width && $image['width'] > $max_srcset_image_width && ! $is_src ) {
			continue;
		}

// If the image dimensions are within 1px of the expected size, use it.
		if ( wp_image_matches_ratio( $image_width, $image_height, $image['width'], $image['height'] ) ) {
			// Add the URL, descriptor, and value to the sources array to be returned.
			$source = array(
				'url'        => $image_baseurl . $image['file'],
				'descriptor' => 'w',
				'value'      => $image['width'],
			);

// The 'src' image has to be the first in the 'srcset', because of a bug in iOS8. See #35030.
			if ( $is_src ) {
				$sources = array( $image['width'] => $source ) + $sources;
			} else {
				$sources[ $image['width'] ] = $source;
			}
		}
	}

/**
	 * Filters an image's 'srcset' sources.
	 *
	 * @since 4.4.0
	 *
	 * @param array  $sources {
	 *     One or more arrays of source data to include in the 'srcset'.
	 *
	 *     @type array $width {
	 *         @type string $url        The URL of an image source.
	 *         @type string $descriptor The descriptor type used in the image candidate string,
	 *                                  either 'w' or 'x'.
	 *         @type int    $value      The source width if paired with a 'w' descriptor, or a
	 *                                  pixel density value if paired with an 'x' descriptor.
	 *     }
	 * }
	 * @param array $size_array     {
	 *     An array of requested width and height values.
	 *
	 *     @type int $0 The width in pixels.
	 *     @type int $1 The height in pixels.
	 * }
	 * @param string $image_src     The 'src' of the image.
	 * @param array  $image_meta    The image meta data as returned by 'wp_get_attachment_metadata()'.
	 * @param int    $attachment_id Image attachment ID or 0.
	 */
	$sources = apply_filters( 'wp_calculate_image_srcset', $sources, $size_array, $image_src, $image_meta, $attachment_id );

// Only return a 'srcset' value if there is more than one source.
	if ( ! $src_matched || ! is_array( $sources ) || count( $sources ) < 2 ) {
		return false;
	}

$srcset = '';

foreach ( $sources as $source ) {
		$srcset .= str_replace( ' ', '%20', $source['url'] ) . ' ' . $source['value'] . $source['descriptor'] . ', ';
	}

return rtrim( $srcset, ', ' );
}

/**
 * Retrieves the value for an image attachment's 'sizes' attribute.
 *
 * @since 4.4.0
 *
 * @see wp_calculate_image_sizes()
 *
 * @param int          $attachment_id Image attachment ID.
 * @param string|int[] $size          Optional. Image size. Accepts any registered image size name, or an array of
 *                                    width and height values in pixels (in that order). Default 'medium'.
 * @param array|null   $image_meta    Optional. The image meta data as returned by 'wp_get_attachment_metadata()'.
 *                                    Default null.
 * @return string|false A valid source size value for use in a 'sizes' attribute or false.
 */
function wp_get_attachment_image_sizes( $attachment_id, $size = 'medium', $image_meta = null ) {
	$image = wp_get_attachment_image_src( $attachment_id, $size );

if ( ! $image ) {
		return false;
	}

if ( ! is_array( $image_meta ) ) {
		$image_meta = wp_get_attachment_metadata( $attachment_id );
	}

$image_src  = $image[0];
	$size_array = array(
		absint( $image[1] ),
		absint( $image[2] ),
	);

return wp_calculate_image_sizes( $size_array, $image_src, $image_meta, $attachment_id );
}

/**
 * Creates a 'sizes' attribute value for an image.
 *
 * @since 4.4.0
 *
 * @param string|int[] $size          Image size. Accepts any registered image size name, or an array of
 *                                    width and height values in pixels (in that order).
 * @param string|null  $image_src     Optional. The URL to the image file. Default null.
 * @param array|null   $image_meta    Optional. The image meta data as returned by 'wp_get_attachment_metadata()'.
 *                                    Default null.
 * @param int          $attachment_id Optional. Image attachment ID. Either `$image_meta` or `$attachment_id`
 *                                    is needed when using the image size name as argument for `$size`. Default 0.
 * @return string|false A valid source size value for use in a 'sizes' attribute or false.
 */
function wp_calculate_image_sizes( $size, $image_src = null, $image_meta = null, $attachment_id = 0 ) {
	$width = 0;

if ( is_array( $size ) ) {
		$width = absint( $size[0] );
	} elseif ( is_string( $size ) ) {
		if ( ! $image_meta && $attachment_id ) {
			$image_meta = wp_get_attachment_metadata( $attachment_id );
		}

if ( is_array( $image_meta ) ) {
			$size_array = _wp_get_image_size_from_meta( $size, $image_meta );
			if ( $size_array ) {
				$width = absint( $size_array[0] );
			}
		}
	}

if ( ! $width ) {
		return false;
	}

// Setup the default 'sizes' attribute.
	$sizes = sprintf( '(max-width: %1$dpx) 100vw, %1$dpx', $width );

/**
	 * Filters the output of 'wp_calculate_image_sizes()'.
	 *
	 * @since 4.4.0
	 *
	 * @param string       $sizes         A source size value for use in a 'sizes' attribute.
	 * @param string|int[] $size          Requested image size. Can be any registered image size name, or
	 *                                    an array of width and height values in pixels (in that order).
	 * @param string|null  $image_src     The URL to the image file or null.
	 * @param array|null   $image_meta    The image meta data as returned by wp_get_attachment_metadata() or null.
	 * @param int          $attachment_id Image attachment ID of the original image or 0.
	 */
	return apply_filters( 'wp_calculate_image_sizes', $sizes, $size, $image_src, $image_meta, $attachment_id );
}

/**
 * Determines if the image meta data is for the image source file.
 *
 * The image meta data is retrieved by attachment post ID. In some cases the post IDs may change.
 * For example when the website is exported and imported at another website. Then the
 * attachment post IDs that are in post_content for the exported website may not match
 * the same attachments at the new website.
 *
 * @since 5.5.0
 *
 * @param string $image_location The full path or URI to the image file.
 * @param array  $image_meta     The attachment meta data as returned by 'wp_get_attachment_metadata()'.
 * @param int    $attachment_id  Optional. The image attachment ID. Default 0.
 * @return bool Whether the image meta is for this image file.
 */
function wp_image_file_matches_image_meta( $image_location, $image_meta, $attachment_id = 0 ) {
	$match = false;

// Ensure the $image_meta is valid.
	if ( isset( $image_meta['file'] ) && strlen( $image_meta['file'] ) > 4 ) {
		// Remove query args in image URI.
		list( $image_location ) = explode( '?', $image_location );

// Check if the relative image path from the image meta is at the end of $image_location.
		if ( strrpos( $image_location, $image_meta['file'] ) === strlen( $image_location ) - strlen( $image_meta['file'] ) ) {
			$match = true;
		} else {
			// Retrieve the uploads sub-directory from the full size image.
			$dirname = _wp_get_attachment_relative_path( $image_meta['file'] );

if ( $dirname ) {
				$dirname = trailingslashit( $dirname );
			}

if ( ! empty( $image_meta['original_image'] ) ) {
				$relative_path = $dirname . $image_meta['original_image'];

if ( strrpos( $image_location, $relative_path ) === strlen( $image_location ) - strlen( $relative_path ) ) {
					$match = true;
				}
			}

if ( ! $match && ! empty( $image_meta['sizes'] ) ) {
				foreach ( $image_meta['sizes'] as $image_size_data ) {
					$relative_path = $dirname . $image_size_data['file'];

if ( strrpos( $image_location, $relative_path ) === strlen( $image_location ) - strlen( $relative_path ) ) {
						$match = true;
						break;
					}
				}
			}
		}
	}

/**
	 * Filters whether an image path or URI matches image meta.
	 *
	 * @since 5.5.0
	 *
	 * @param bool   $match          Whether the image relative path from the image meta
	 *                               matches the end of the URI or path to the image file.
	 * @param string $image_location Full path or URI to the tested image file.
	 * @param array  $image_meta     The image meta data as returned by 'wp_get_attachment_metadata()'.
	 * @param int    $attachment_id  The image attachment ID or 0 if not supplied.
	 */
	return apply_filters( 'wp_image_file_matches_image_meta', $match, $image_location, $image_meta, $attachment_id );
}

/**
 * Determines an image's width and height dimensions based on the source file.
 *
 * @since 5.5.0
 *
 * @param string $image_src     The image source file.
 * @param array  $image_meta    The image meta data as returned by 'wp_get_attachment_metadata()'.
 * @param int    $attachment_id Optional. The image attachment ID. Default 0.
 * @return array|false Array with first element being the width and second element being the height,
 *                     or false if dimensions cannot be determined.
 */
function wp_image_src_get_dimensions( $image_src, $image_meta, $attachment_id = 0 ) {
	$dimensions = false;

// Is it a full size image?
	if (
		isset( $image_meta['file'] ) &&
		str_contains( $image_src, wp_basename( $image_meta['file'] ) )
	) {
		$dimensions = array(
			(int) $image_meta['width'],
			(int) $image_meta['height'],
		);
	}

if ( ! $dimensions && ! empty( $image_meta['sizes'] ) ) {
		$src_filename = wp_basename( $image_src );

foreach ( $image_meta['sizes'] as $image_size_data ) {
			if ( $src_filename === $image_size_data['file'] ) {
				$dimensions = array(
					(int) $image_size_data['width'],
					(int) $image_size_data['height'],
				);

break;
			}
		}
	}

/**
	 * Filters the 'wp_image_src_get_dimensions' value.
	 *
	 * @since 5.7.0
	 *
	 * @param array|false $dimensions    Array with first element being the width
	 *                                   and second element being the height, or
	 *                                   false if dimensions could not be determined.
	 * @param string      $image_src     The image source file.
	 * @param array       $image_meta    The image meta data as returned by
	 *                                   'wp_get_attachment_metadata()'.
	 * @param int         $attachment_id The image attachment ID. Default 0.
	 */
	return apply_filters( 'wp_image_src_get_dimensions', $dimensions, $image_src, $image_meta, $attachment_id );
}

/**
 * Adds 'srcset' and 'sizes' attributes to an existing 'img' element.
 *
 * @since 4.4.0
 *
 * @see wp_calculate_image_srcset()
 * @see wp_calculate_image_sizes()
 *
 * @param string $image         An HTML 'img' element to be filtered.
 * @param array  $image_meta    The image meta data as returned by 'wp_get_attachment_metadata()'.
 * @param int    $attachment_id Image attachment ID.
 * @return string Converted 'img' element with 'srcset' and 'sizes' attributes added.
 */
function wp_image_add_srcset_and_sizes( $image, $image_meta, $attachment_id ) {
	// Ensure the image meta exists.
	if ( empty( $image_meta['sizes'] ) ) {
		return $image;
	}

$image_src         = preg_match( '/src="([^"]+)"/', $image, $match_src ) ? $match_src[1] : '';
	list( $image_src ) = explode( '?', $image_src );

// Return early if we couldn't get the image source.
	if ( ! $image_src ) {
		return $image;
	}

// Bail early if an image has been inserted and later edited.
	if ( preg_match( '/-e[0-9]{13}/', $image_meta['file'], $img_edit_hash )
		&& ! str_contains( wp_basename( $image_src ), $img_edit_hash[0] )
	) {
		return $image;
	}

$width  = preg_match( '/ width="([0-9]+)"/', $image, $match_width ) ? (int) $match_width[1] : 0;
	$height = preg_match( '/ height="([0-9]+)"/', $image, $match_height ) ? (int) $match_height[1] : 0;

if ( $width && $height ) {
		$size_array = array( $width, $height );
	} else {
		$size_array = wp_image_src_get_dimensions( $image_src, $image_meta, $attachment_id );
		if ( ! $size_array ) {
			return $image;
		}
	}

$srcset = wp_calculate_image_srcset( $size_array, $image_src, $image_meta, $attachment_id );

if ( $srcset ) {
		// Check if there is already a 'sizes' attribute.
		$sizes = strpos( $image, ' sizes=' );

if ( ! $sizes ) {
			$sizes = wp_calculate_image_sizes( $size_array, $image_src, $image_meta, $attachment_id );
		}
	}

if ( $srcset && $sizes ) {
		// Format the 'srcset' and 'sizes' string and escape attributes.
		$attr = sprintf( ' srcset="%s"', esc_attr( $srcset ) );

if ( is_string( $sizes ) ) {
			$attr .= sprintf( ' sizes="%s"', esc_attr( $sizes ) );
		}

// Add the srcset and sizes attributes to the image markup.
		return preg_replace( '/<img ([^>]+?)[\/ ]*>/', '<img $1' . $attr . ' />', $image );
	}

return $image;
}

/**
 * Determines whether to add the `loading` attribute to the specified tag in the specified context.
 *
 * @since 5.5.0
 * @since 5.7.0 Now returns `true` by default for `iframe` tags.
 *
 * @param string $tag_name The tag name.
 * @param string $context  Additional context, like the current filter name
 *                         or the function name from where this was called.
 * @return bool Whether to add the attribute.
 */
function wp_lazy_loading_enabled( $tag_name, $context ) {
	/*
	 * By default add to all 'img' and 'iframe' tags.
	 * See https://html.spec.whatwg.org/multipage/embedded-content.html#attr-img-loading
	 * See https://html.spec.whatwg.org/multipage/iframe-embed-object.html#attr-iframe-loading
	 */
	$default = ( 'img' === $tag_name || 'iframe' === $tag_name );

/**
	 * Filters whether to add the `loading` attribute to the specified tag in the specified context.
	 *
	 * @since 5.5.0
	 *
	 * @param bool   $default  Default value.
	 * @param string $tag_name The tag name.
	 * @param string $context  Additional context, like the current filter name
	 *                         or the function name from where this was called.
	 */
	return (bool) apply_filters( 'wp_lazy_loading_enabled', $default, $tag_name, $context );
}

/**
 * Filters specific tags in post content and modifies their markup.
 *
 * Modifies HTML tags in post content to include new browser and HTML technologies
 * that may not have existed at the time of post creation. These modifications currently
 * include adding `srcset`, `sizes`, and `loading` attributes to `img` HTML tags, as well
 * as adding `loading` attributes to `iframe` HTML tags.
 * Future similar optimizations should be added/expected here.
 *
 * @since 5.5.0
 * @since 5.7.0 Now supports adding `loading` attributes to `iframe` tags.
 *
 * @see wp_img_tag_add_width_and_height_attr()
 * @see wp_img_tag_add_srcset_and_sizes_attr()
 * @see wp_img_tag_add_loading_optimization_attrs()
 * @see wp_iframe_tag_add_loading_attr()
 *
 * @param string $content The HTML content to be filtered.
 * @param string $context Optional. Additional context to pass to the filters.
 *                        Defaults to `current_filter()` when not set.
 * @return string Converted content with images modified.
 */
function wp_filter_content_tags( $content, $context = null ) {
	if ( null === $context ) {
		$context = current_filter();
	}

$add_iframe_loading_attr = wp_lazy_loading_enabled( 'iframe', $context );

if ( ! preg_match_all( '/<(img|iframe)\s[^>]+>/', $content, $matches, PREG_SET_ORDER ) ) {
		return $content;
	}

// List of the unique `img` tags found in $content.
	$images = array();

// List of the unique `iframe` tags found in $content.
	$iframes = array();

foreach ( $matches as $match ) {
		list( $tag, $tag_name ) = $match;

switch ( $tag_name ) {
			case 'img':
				if ( preg_match( '/wp-image-([0-9]+)/i', $tag, $class_id ) ) {
					$attachment_id = absint( $class_id[1] );

if ( $attachment_id ) {
						/*
						 * If exactly the same image tag is used more than once, overwrite it.
						 * All identical tags will be replaced later with 'str_replace()'.
						 */
						$images[ $tag ] = $attachment_id;
						break;
					}
				}
				$images[ $tag ] = 0;
				break;
			case 'iframe':
				$iframes[ $tag ] = 0;
				break;
		}
	}

// Reduce the array to unique attachment IDs.
	$attachment_ids = array_unique( array_filter( array_values( $images ) ) );

if ( count( $attachment_ids ) > 1 ) {
		/*
		 * Warm the object cache with post and meta information for all found
		 * images to avoid making individual database calls.
		 */
		_prime_post_caches( $attachment_ids, false, true );
	}

// Iterate through the matches in order of occurrence as it is relevant for whether or not to lazy-load.
	foreach ( $matches as $match ) {
		// Filter an image match.
		if ( isset( $images[ $match[0] ] ) ) {
			$filtered_image = $match[0];
			$attachment_id  = $images[ $match[0] ];

// Add 'width' and 'height' attributes if applicable.
			if ( $attachment_id > 0 && ! str_contains( $filtered_image, ' width=' ) && ! str_contains( $filtered_image, ' height=' ) ) {
				$filtered_image = wp_img_tag_add_width_and_height_attr( $filtered_image, $context, $attachment_id );
			}

// Add 'srcset' and 'sizes' attributes if applicable.
			if ( $attachment_id > 0 && ! str_contains( $filtered_image, ' srcset=' ) ) {
				$filtered_image = wp_img_tag_add_srcset_and_sizes_attr( $filtered_image, $context, $attachment_id );
			}

// Add loading optimization attributes if applicable.
			$filtered_image = wp_img_tag_add_loading_optimization_attrs( $filtered_image, $context );

// Adds 'auto' to the sizes attribute if applicable.
			$filtered_image = wp_img_tag_add_auto_sizes( $filtered_image );

/**
			 * Filters an img tag within the content for a given context.
			 *
			 * @since 6.0.0
			 *
			 * @param string $filtered_image Full img tag with attributes that will replace the source img tag.
			 * @param string $context        Additional context, like the current filter name or the function name from where this was called.
			 * @param int    $attachment_id  The image attachment ID. May be 0 in case the image is not an attachment.
			 */
			$filtered_image = apply_filters( 'wp_content_img_tag', $filtered_image, $context, $attachment_id );

if ( $filtered_image !== $match[0] ) {
				$content = str_replace( $match[0], $filtered_image, $content );
			}

/*
			 * Unset image lookup to not run the same logic again unnecessarily if the same image tag is used more than
			 * once in the same blob of content.
			 */
			unset( $images[ $match[0] ] );
		}

// Filter an iframe match.
		if ( isset( $iframes[ $match[0] ] ) ) {
			$filtered_iframe = $match[0];

// Add 'loading' attribute if applicable.
			if ( $add_iframe_loading_attr && ! str_contains( $filtered_iframe, ' loading=' ) ) {
				$filtered_iframe = wp_iframe_tag_add_loading_attr( $filtered_iframe, $context );
			}

if ( $filtered_iframe !== $match[0] ) {
				$content = str_replace( $match[0], $filtered_iframe, $content );
			}

/*
			 * Unset iframe lookup to not run the same logic again unnecessarily if the same iframe tag is used more
			 * than once in the same blob of content.
			 */
			unset( $iframes[ $match[0] ] );
		}
	}

return $content;
}

/**
 * Adds 'auto' to the sizes attribute to the image, if the image is lazy loaded and does not already include it.
 *
 * @since 6.7.0
 *
 * @param string $image The image tag markup being filtered.
 * @return string The filtered image tag markup.
 */
function wp_img_tag_add_auto_sizes( string $image ): string {
	/**
	 * Filters whether auto-sizes for lazy loaded images is enabled.
	 *
	 * @since 6.7.1
	 *
	 * @param boolean $enabled Whether auto-sizes for lazy loaded images is enabled.
	 */
	if ( ! apply_filters( 'wp_img_tag_add_auto_sizes', true ) ) {
		return $image;
	}

$processor = new WP_HTML_Tag_Processor( $image );

// Bail if there is no IMG tag.
	if ( ! $processor->next_tag( array( 'tag_name' => 'IMG' ) ) ) {
		return $image;
	}

// Bail early if the image is not lazy-loaded.
	$loading = $processor->get_attribute( 'loading' );
	if ( ! is_string( $loading ) || 'lazy' !== strtolower( trim( $loading, " \t\f\r\n" ) ) ) {
		return $image;
	}

/*
	 * Bail early if the image doesn't have a width attribute.
	 * Per WordPress Core itself, lazy-loaded images should always have a width attribute.
	 * However, it is possible that lazy-loading could be added by a plugin, where we don't have that guarantee.
	 * As such, it still makes sense to ensure presence of a width attribute here in order to use `sizes=auto`.
	 */
	$width = $processor->get_attribute( 'width' );
	if ( ! is_string( $width ) || '' === $width ) {
		return $image;
	}

$sizes = $processor->get_attribute( 'sizes' );

// Bail early if the image is not responsive.
	if ( ! is_string( $sizes ) ) {
		return $image;
	}

// Don't add 'auto' to the sizes attribute if it already exists.
	if ( wp_sizes_attribute_includes_valid_auto( $sizes ) ) {
		return $image;
	}

$processor->set_attribute( 'sizes', "auto, $sizes" );
	return $processor->get_updated_html();
}

/**
 * Checks whether the given 'sizes' attribute includes the 'auto' keyword as the first item in the list.
 *
 * Per the HTML spec, if present it must be the first entry.
 *
 * @since 6.7.0
 *
 * @param string $sizes_attr The 'sizes' attribute value.
 * @return bool True if the 'auto' keyword is present, false otherwise.
 */
function wp_sizes_attribute_includes_valid_auto( string $sizes_attr ): bool {
	list( $first_size ) = explode( ',', $sizes_attr, 2 );
	return 'auto' === strtolower( trim( $first_size, " \t\f\r\n" ) );
}

/**
 * Prints a CSS rule to fix potential visual issues with images using `sizes=auto`.
 *
 * This rule overrides the similar rule in the default user agent stylesheet, to avoid images that use e.g.
 * `width: auto` or `width: fit-content` to appear smaller.
 *
 * @since 6.7.1
 * @see https://html.spec.whatwg.org/multipage/rendering.html#img-contain-size
 * @see https://core.trac.wordpress.org/ticket/62413
 */
function wp_print_auto_sizes_contain_css_fix() {
	/** This filter is documented in wp-includes/media.php */
	$add_auto_sizes = apply_filters( 'wp_img_tag_add_auto_sizes', true );
	if ( ! $add_auto_sizes ) {
		return;
	}

?>
	<style>img:is([sizes="auto" i], [sizes^="auto," i]) { contain-intrinsic-size: 3000px 1500px }</style>
	<?php
}

/**
 * Adds optimization attributes to an `img` HTML tag.
 *
 * @since 6.3.0
 *
 * @param string $image   The HTML `img` tag where the attribute should be added.
 * @param string $context Additional context to pass to the filters.
 * @return string Converted `img` tag with optimization attributes added.
 */
function wp_img_tag_add_loading_optimization_attrs( $image, $context ) {
	$src               = preg_match( '/ src=["\']?([^"\']*)/i', $image, $matche_src ) ? $matche_src[1] : null;
	$width             = preg_match( '/ width=["\']([0-9]+)["\']/', $image, $match_width ) ? (int) $match_width[1] : null;
	$height            = preg_match( '/ height=["\']([0-9]+)["\']/', $image, $match_height ) ? (int) $match_height[1] : null;
	$loading_val       = preg_match( '/ loading=["\']([A-Za-z]+)["\']/', $image, $match_loading ) ? $match_loading[1] : null;
	$fetchpriority_val = preg_match( '/ fetchpriority=["\']([A-Za-z]+)["\']/', $image, $match_fetchpriority ) ? $match_fetchpriority[1] : null;
	$decoding_val      = preg_match( '/ decoding=["\']([A-Za-z]+)["\']/', $image, $match_decoding ) ? $match_decoding[1] : null;

/*
	 * Get loading optimization attributes to use.
	 * This must occur before the conditional check below so that even images
	 * that are ineligible for being lazy-loaded are considered.
	 */
	$optimization_attrs = wp_get_loading_optimization_attributes(
		'img',
		array(
			'src'           => $src,
			'width'         => $width,
			'height'        => $height,
			'loading'       => $loading_val,
			'fetchpriority' => $fetchpriority_val,
			'decoding'      => $decoding_val,
		),
		$context
	);

// Images should have source for the loading optimization attributes to be added.
	if ( ! str_contains( $image, ' src="' ) ) {
		return $image;
	}

if ( empty( $decoding_val ) ) {
		/**
		 * Filters the `decoding` attribute value to add to an image. Default `async`.
		 *
		 * Returning a falsey value will omit the attribute.
		 *
		 * @since 6.1.0
		 *
		 * @param string|false|null $value      The `decoding` attribute value. Returning a falsey value
		 *                                      will result in the attribute being omitted for the image.
		 *                                      Otherwise, it may be: 'async', 'sync', or 'auto'. Defaults to false.
		 * @param string            $image      The HTML `img` tag to be filtered.
		 * @param string            $context    Additional context about how the function was called
		 *                                      or where the img tag is.
		 */
		$filtered_decoding_attr = apply_filters(
			'wp_img_tag_add_decoding_attr',
			isset( $optimization_attrs['decoding'] ) ? $optimization_attrs['decoding'] : false,
			$image,
			$context
		);

// Validate the values after filtering.
		if ( isset( $optimization_attrs['decoding'] ) && ! $filtered_decoding_attr ) {
			// Unset `decoding` attribute if `$filtered_decoding_attr` is set to `false`.
			unset( $optimization_attrs['decoding'] );
		} elseif ( in_array( $filtered_decoding_attr, array( 'async', 'sync', 'auto' ), true ) ) {
			$optimization_attrs['decoding'] = $filtered_decoding_attr;
		}

if ( ! empty( $optimization_attrs['decoding'] ) ) {
			$image = str_replace( '<img', '<img decoding="' . esc_attr( $optimization_attrs['decoding'] ) . '"', $image );
		}
	}

// Images should have dimension attributes for the 'loading' and 'fetchpriority' attributes to be added.
	if ( ! str_contains( $image, ' width="' ) || ! str_contains( $image, ' height="' ) ) {
		return $image;
	}

// Retained for backward compatibility.
	$loading_attrs_enabled = wp_lazy_loading_enabled( 'img', $context );

if ( empty( $loading_val ) && $loading_attrs_enabled ) {
		/**
		 * Filters the `loading` attribute value to add to an image. Default `lazy`.
		 *
		 * Returning `false` or an empty string will not add the attribute.
		 * Returning `true` will add the default value.
		 *
		 * @since 5.5.0
		 *
		 * @param string|bool $value   The `loading` attribute value. Returning a falsey value will result in
		 *                             the attribute being omitted for the image.
		 * @param string      $image   The HTML `img` tag to be filtered.
		 * @param string      $context Additional context about how the function was called or where the img tag is.
		 */
		$filtered_loading_attr = apply_filters(
			'wp_img_tag_add_loading_attr',
			isset( $optimization_attrs['loading'] ) ? $optimization_attrs['loading'] : false,
			$image,
			$context
		);

// Validate the values after filtering.
		if ( isset( $optimization_attrs['loading'] ) && ! $filtered_loading_attr ) {
			// Unset `loading` attributes if `$filtered_loading_attr` is set to `false`.
			unset( $optimization_attrs['loading'] );
		} elseif ( in_array( $filtered_loading_attr, array( 'lazy', 'eager' ), true ) ) {
			/*
			 * If the filter changed the loading attribute to "lazy" when a fetchpriority attribute
			 * with value "high" is already present, trigger a warning since those two attribute
			 * values should be mutually exclusive.
			 *
			 * The same warning is present in `wp_get_loading_optimization_attributes()`, and here it
			 * is only intended for the specific scenario where the above filtered caused the problem.
			 */
			if ( isset( $optimization_attrs['fetchpriority'] ) && 'high' === $optimization_attrs['fetchpriority'] &&
				( isset( $optimization_attrs['loading'] ) ? $optimization_attrs['loading'] : false ) !== $filtered_loading_attr &&
				'lazy' === $filtered_loading_attr
			) {
				_doing_it_wrong(
					__FUNCTION__,
					__( 'An image should not be lazy-loaded and marked as high priority at the same time.' ),
					'6.3.0'
				);
			}

// The filtered value will still be respected.
			$optimization_attrs['loading'] = $filtered_loading_attr;
		}

if ( ! empty( $optimization_attrs['loading'] ) ) {
			$image = str_replace( '<img', '<img loading="' . esc_attr( $optimization_attrs['loading'] ) . '"', $image );
		}
	}

if ( empty( $fetchpriority_val ) && ! empty( $optimization_attrs['fetchpriority'] ) ) {
		$image = str_replace( '<img', '<img fetchpriority="' . esc_attr( $optimization_attrs['fetchpriority'] ) . '"', $image );
	}

return $image;
}

/**
 * Adds `width` and `height` attributes to an `img` HTML tag.
 *
 * @since 5.5.0
 *
 * @param string $image         The HTML `img` tag where the attribute should be added.
 * @param string $context       Additional context to pass to the filters.
 * @param int    $attachment_id Image attachment ID.
 * @return string Converted 'img' element with 'width' and 'height' attributes added.
 */
function wp_img_tag_add_width_and_height_attr( $image, $context, $attachment_id ) {
	$image_src         = preg_match( '/src="([^"]+)"/', $image, $match_src ) ? $match_src[1] : '';
	list( $image_src ) = explode( '?', $image_src );

// Return early if we couldn't get the image source.
	if ( ! $image_src ) {
		return $image;
	}

/**
	 * Filters whether to add the missing `width` and `height` HTML attributes to the img tag. Default `true`.
	 *
	 * Returning anything else than `true` will not add the attributes.
	 *
	 * @since 5.5.0
	 *
	 * @param bool   $value         The filtered value, defaults to `true`.
	 * @param string $image         The HTML `img` tag where the attribute should be added.
	 * @param string $context       Additional context about how the function was called or where the img tag is.
	 * @param int    $attachment_id The image attachment ID.
	 */
	$add = apply_filters( 'wp_img_tag_add_width_and_height_attr', true, $image, $context, $attachment_id );

if ( true === $add ) {
		$image_meta = wp_get_attachment_metadata( $attachment_id );
		$size_array = wp_image_src_get_dimensions( $image_src, $image_meta, $attachment_id );

if ( $size_array && $size_array[0] && $size_array[1] ) {
			// If the width is enforced through style (e.g. in an inline image), calculate the dimension attributes.
			$style_width = preg_match( '/style="width:\s*(\d+)px;"/', $image, $match_width ) ? (int) $match_width[1] : 0;
			if ( $style_width ) {
				$size_array[1] = (int) round( $size_array[1] * $style_width / $size_array[0] );
				$size_array[0] = $style_width;
			}

$hw = trim( image_hwstring( $size_array[0], $size_array[1] ) );
			return str_replace( '<img', "<img {$hw}", $image );
		}
	}

return $image;
}

/**
 * Adds `srcset` and `sizes` attributes to an existing `img` HTML tag.
 *
 * @since 5.5.0
 *
 * @param string $image         The HTML `img` tag where the attribute should be added.
 * @param string $context       Additional context to pass to the filters.
 * @param int    $attachment_id Image attachment ID.
 * @return string Converted 'img' element with 'loading' attribute added.
 */
function wp_img_tag_add_srcset_and_sizes_attr( $image, $context, $attachment_id ) {
	/**
	 * Filters whether to add the `srcset` and `sizes` HTML attributes to the img tag. Default `true`.
	 *
	 * Returning anything else than `true` will not add the attributes.
	 *
	 * @since 5.5.0
	 *
	 * @param bool   $value         The filtered value, defaults to `true`.
	 * @param string $image         The HTML `img` tag where the attribute should be added.
	 * @param string $context       Additional context about how the function was called or where the img tag is.
	 * @param int    $attachment_id The image attachment ID.
	 */
	$add = apply_filters( 'wp_img_tag_add_srcset_and_sizes_attr', true, $image, $context, $attachment_id );

if ( true === $add ) {
		$image_meta = wp_get_attachment_metadata( $attachment_id );
		return wp_image_add_srcset_and_sizes( $image, $image_meta, $attachment_id );
	}

return $image;
}

/**
 * Adds `loading` attribute to an `iframe` HTML tag.
 *
 * @since 5.7.0
 *
 * @param string $iframe  The HTML `iframe` tag where the attribute should be added.
 * @param string $context Additional context to pass to the filters.
 * @return string Converted `iframe` tag with `loading` attribute added.
 */
function wp_iframe_tag_add_loading_attr( $iframe, $context ) {
	/*
	 * Get loading attribute value to use. This must occur before the conditional check below so that even iframes that
	 * are ineligible for being lazy-loaded are considered.
	 */
	$optimization_attrs = wp_get_loading_optimization_attributes(
		'iframe',
		array(
			/*
			 * The concrete values for width and height are not important here for now
			 * since fetchpriority is not yet supported for iframes.
			 * TODO: Use WP_HTML_Tag_Processor to extract actual values once support is
			 * added.
			 */
			'width'   => str_contains( $iframe, ' width="' ) ? 100 : null,
			'height'  => str_contains( $iframe, ' height="' ) ? 100 : null,
			// This function is never called when a 'loading' attribute is already present.
			'loading' => null,
		),
		$context
	);

// Iframes should have source and dimension attributes for the `loading` attribute to be added.
	if ( ! str_contains( $iframe, ' src="' ) || ! str_contains( $iframe, ' width="' ) || ! str_contains( $iframe, ' height="' ) ) {
		return $iframe;
	}

$value = isset( $optimization_attrs['loading'] ) ? $optimization_attrs['loading'] : false;

/**
	 * Filters the `loading` attribute value to add to an iframe. Default `lazy`.
	 *
	 * Returning `false` or an empty string will not add the attribute.
	 * Returning `true` will add the default value.
	 *
	 * @since 5.7.0
	 *
	 * @param string|bool $value   The `loading` attribute value. Returning a falsey value will result in
	 *                             the attribute being omitted for the iframe.
	 * @param string      $iframe  The HTML `iframe` tag to be filtered.
	 * @param string      $context Additional context about how the function was called or where the iframe tag is.
	 */
	$value = apply_filters( 'wp_iframe_tag_add_loading_attr', $value, $iframe, $context );

if ( $value ) {
		if ( ! in_array( $value, array( 'lazy', 'eager' ), true ) ) {
			$value = 'lazy';
		}

return str_replace( '<iframe', '<iframe loading="' . esc_attr( $value ) . '"', $iframe );
	}

return $iframe;
}

/**
 * Adds a 'wp-post-image' class to post thumbnails. Internal use only.
 *
 * Uses the {@see 'begin_fetch_post_thumbnail_html'} and {@see 'end_fetch_post_thumbnail_html'}
 * action hooks to dynamically add/remove itself so as to only filter post thumbnails.
 *
 * @ignore
 * @since 2.9.0
 *
 * @param string[] $attr Array of thumbnail attributes including src, class, alt, title, keyed by attribute name.
 * @return string[] Modified array of attributes including the new 'wp-post-image' class.
 */
function _wp_post_thumbnail_class_filter( $attr ) {
	$attr['class'] .= ' wp-post-image';
	return $attr;
}

/**
 * Adds '_wp_post_thumbnail_class_filter' callback to the 'wp_get_attachment_image_attributes'
 * filter hook. Internal use only.
 *
 * @ignore
 * @since 2.9.0
 *
 * @param string[] $attr Array of thumbnail attributes including src, class, alt, title, keyed by attribute name.
 */
function _wp_post_thumbnail_class_filter_add( $attr ) {
	add_filter( 'wp_get_attachment_image_attributes', '_wp_post_thumbnail_class_filter' );
}

/**
 * Removes the '_wp_post_thumbnail_class_filter' callback from the 'wp_get_attachment_image_attributes'
 * filter hook. Internal use only.
 *
 * @ignore
 * @since 2.9.0
 *
 * @param string[] $attr Array of thumbnail attributes including src, class, alt, title, keyed by attribute name.
 */
function _wp_post_thumbnail_class_filter_remove( $attr ) {
	remove_filter( 'wp_get_attachment_image_attributes', '_wp_post_thumbnail_class_filter' );
}

/**
 * Overrides the context used in {@see wp_get_attachment_image()}. Internal use only.
 *
 * Uses the {@see 'begin_fetch_post_thumbnail_html'} and {@see 'end_fetch_post_thumbnail_html'}
 * action hooks to dynamically add/remove itself so as to only filter post thumbnails.
 *
 * @ignore
 * @since 6.3.0
 * @access private
 *
 * @param string $context The context for rendering an attachment image.
 * @return string Modified context set to 'the_post_thumbnail'.
 */
function _wp_post_thumbnail_context_filter( $context ) {
	return 'the_post_thumbnail';
}

/**
 * Adds the '_wp_post_thumbnail_context_filter' callback to the 'wp_get_attachment_image_context'
 * filter hook. Internal use only.
 *
 * @ignore
 * @since 6.3.0
 * @access private
 */
function _wp_post_thumbnail_context_filter_add() {
	add_filter( 'wp_get_attachment_image_context', '_wp_post_thumbnail_context_filter' );
}

/**
 * Removes the '_wp_post_thumbnail_context_filter' callback from the 'wp_get_attachment_image_context'
 * filter hook. Internal use only.
 *
 * @ignore
 * @since 6.3.0
 * @access private
 */
function _wp_post_thumbnail_context_filter_remove() {
	remove_filter( 'wp_get_attachment_image_context', '_wp_post_thumbnail_context_filter' );
}

add_shortcode( 'wp_caption', 'img_caption_shortcode' );
add_shortcode( 'caption', 'img_caption_shortcode' );

/**
 * Builds the Caption shortcode output.
 *
 * Allows a plugin to replace the content that would otherwise be returned. The
 * filter is {@see 'img_caption_shortcode'} and passes an empty string, the attr
 * parameter and the content parameter values.
 *
 * The supported attributes for the shortcode are 'id', 'caption_id', 'align',
 * 'width', 'caption', and 'class'.
 *
 * @since 2.6.0
 * @since 3.9.0 The `class` attribute was added.
 * @since 5.1.0 The `caption_id` attribute was added.
 * @since 5.9.0 The `$content` parameter default value changed from `null` to `''`.
 *
 * @param array  $attr {
 *     Attributes of the caption shortcode.
 *
 *     @type string $id         ID of the image and caption container element, i.e. `<figure>` or `<div>`.
 *     @type string $caption_id ID of the caption element, i.e. `<figcaption>` or `<p>`.
 *     @type string $align      Class name that aligns the caption. Default 'alignnone'. Accepts 'alignleft',
 *                              'aligncenter', alignright', 'alignnone'.
 *     @type int    $width      The width of the caption, in pixels.
 *     @type string $caption    The caption text.
 *     @type string $class      Additional class name(s) added to the caption container.
 * }
 * @param string $content Optional. Shortcode content. Default empty string.
 * @return string HTML content to display the caption.
 */
function img_caption_shortcode( $attr, $content = '' ) {
	// New-style shortcode with the caption inside the shortcode with the link and image tags.
	if ( ! isset( $attr['caption'] ) ) {
		if ( preg_match( '#((?:<a [^>]+>\s*)?<img [^>]+>(?:\s*</a>)?)(.*)#is', $content, $matches ) ) {
			$content         = $matches[1];
			$attr['caption'] = trim( $matches[2] );
		}
	} elseif ( str_contains( $attr['caption'], '<' ) ) {
		$attr['caption'] = wp_kses( $attr['caption'], 'post' );
	}

/**
	 * Filters the default caption shortcode output.
	 *
	 * If the filtered output isn't empty, it will be used instead of generating
	 * the default caption template.
	 *
	 * @since 2.6.0
	 *
	 * @see img_caption_shortcode()
	 *
	 * @param string $output  The caption output. Default empty.
	 * @param array  $attr    Attributes of the caption shortcode.
	 * @param string $content The image element, possibly wrapped in a hyperlink.
	 */
	$output = apply_filters( 'img_caption_shortcode', '', $attr, $content );

if ( ! empty( $output ) ) {
		return $output;
	}

$atts = shortcode_atts(
		array(
			'id'         => '',
			'caption_id' => '',
			'align'      => 'alignnone',
			'width'      => '',
			'caption'    => '',
			'class'      => '',
		),
		$attr,
		'caption'
	);

$atts['width'] = (int) $atts['width'];

if ( $atts['width'] < 1 || empty( $atts['caption'] ) ) {
		return $content;
	}

$id          = '';
	$caption_id  = '';
	$describedby = '';

if ( $atts['id'] ) {
		$atts['id'] = sanitize_html_class( $atts['id'] );
		$id         = 'id="' . esc_attr( $atts['id'] ) . '" ';
	}

if ( $atts['caption_id'] ) {
		$atts['caption_id'] = sanitize_html_class( $atts['caption_id'] );
	} elseif ( $atts['id'] ) {
		$atts['caption_id'] = 'caption-' . str_replace( '_', '-', $atts['id'] );
	}

if ( $atts['caption_id'] ) {
		$caption_id  = 'id="' . esc_attr( $atts['caption_id'] ) . '" ';
		$describedby = 'aria-describedby="' . esc_attr( $atts['caption_id'] ) . '" ';
	}

$class = trim( 'wp-caption ' . $atts['align'] . ' ' . $atts['class'] );

$html5 = current_theme_supports( 'html5', 'caption' );
	// HTML5 captions never added the extra 10px to the image width.
	$width = $html5 ? $atts['width'] : ( 10 + $atts['width'] );

/**
	 * Filters the width of an image's caption.
	 *
	 * By default, the caption is 10 pixels greater than the width of the image,
	 * to prevent post content from running up against a floated image.
	 *
	 * @since 3.7.0
	 *
	 * @see img_caption_shortcode()
	 *
	 * @param int    $width    Width of the caption in pixels. To remove this inline style,
	 *                         return zero.
	 * @param array  $atts     Attributes of the caption shortcode.
	 * @param string $content  The image element, possibly wrapped in a hyperlink.
	 */
	$caption_width = apply_filters( 'img_caption_shortcode_width', $width, $atts, $content );

$style = '';

if ( $caption_width ) {
		$style = 'style="width: ' . (int) $caption_width . 'px" ';
	}

if ( $html5 ) {
		$html = sprintf(
			'<figure %s%s%sclass="%s">%s%s</figure>',
			$id,
			$describedby,
			$style,
			esc_attr( $class ),
			do_shortcode( $content ),
			sprintf(
				'<figcaption %sclass="wp-caption-text">%s</figcaption>',
				$caption_id,
				$atts['caption']
			)
		);
	} else {
		$html = sprintf(
			'<div %s%sclass="%s">%s%s</div>',
			$id,
			$style,
			esc_attr( $class ),
			str_replace( '<img ', '<img ' . $describedby, do_shortcode( $content ) ),
			sprintf(
				'<p %sclass="wp-caption-text">%s</p>',
				$caption_id,
				$atts['caption']
			)
		);
	}

return $html;
}

add_shortcode( 'gallery', 'gallery_shortcode' );

/**
 * Builds the Gallery shortcode output.
 *
 * This implements the functionality of the Gallery Shortcode for displaying
 * WordPress images on a post.
 *
 * @since 2.5.0
 * @since 2.8.0 Added the `$attr` parameter to set the shortcode output. New attributes included
 *              such as `size`, `itemtag`, `icontag`, `captiontag`, and columns. Changed markup from
 *              `div` tags to `dl`, `dt` and `dd` tags. Support more than one gallery on the
 *              same page.
 * @since 2.9.0 Added support for `include` and `exclude` to shortcode.
 * @since 3.5.0 Use get_post() instead of global `$post`. Handle mapping of `ids` to `include`
 *              and `orderby`.
 * @since 3.6.0 Added validation for tags used in gallery shortcode. Add orientation information to items.
 * @since 3.7.0 Introduced the `link` attribute.
 * @since 3.9.0 `html5` gallery support, accepting 'itemtag', 'icontag', and 'captiontag' attributes.
 * @since 4.0.0 Removed use of `extract()`.
 * @since 4.1.0 Added attribute to `wp_get_attachment_link()` to output `aria-describedby`.
 * @since 4.2.0 Passed the shortcode instance ID to `post_gallery` and `post_playlist` filters.
 * @since 4.6.0 Standardized filter docs to match documentation standards for PHP.
 * @since 5.1.0 Code cleanup for WPCS 1.0.0 coding standards.
 * @since 5.3.0 Saved progress of intermediate image creation after upload.
 * @since 5.5.0 Ensured that galleries can be output as a list of links in feeds.
 * @since 5.6.0 Replaced order-style PHP type conversion functions with typecasts. Fix logic for
 *              an array of image dimensions.
 *
 * @param array $attr {
 *     Attributes of the gallery shortcode.
 *
 *     @type string       $order      Order of the images in the gallery. Default 'ASC'. Accepts 'ASC', 'DESC'.
 *     @type string       $orderby    The field to use when ordering the images. Default 'menu_order ID'.
 *                                    Accepts any valid SQL ORDERBY statement.
 *     @type int          $id         Post ID.
 *     @type string       $itemtag    HTML tag to use for each image in the gallery.
 *                                    Default 'dl', or 'figure' when the theme registers HTML5 gallery support.
 *     @type string       $icontag    HTML tag to use for each image's icon.
 *                                    Default 'dt', or 'div' when the theme registers HTML5 gallery support.
 *     @type string       $captiontag HTML tag to use for each image's caption.
 *                                    Default 'dd', or 'figcaption' when the theme registers HTML5 gallery support.
 *     @type int          $columns    Number of columns of images to display. Default 3.
 *     @type string|int[] $size       Size of the images to display. Accepts any registered image size name, or an array
 *                                    of width and height values in pixels (in that order). Default 'thumbnail'.
 *     @type string       $ids        A comma-separated list of IDs of attachments to display. Default empty.
 *     @type string       $include    A comma-separated list of IDs of attachments to include. Default empty.
 *     @type string       $exclude    A comma-separated list of IDs of attachments to exclude. Default empty.
 *     @type string       $link       What to link each image to. Default empty (links to the attachment page).
 *                                    Accepts 'file', 'none'.
 * }
 * @return string HTML content to display gallery.
 */
function gallery_shortcode( $attr ) {
	$post = get_post();

static $instance = 0;
	++$instance;

if ( ! empty( $attr['ids'] ) ) {
		// 'ids' is explicitly ordered, unless you specify otherwise.
		if ( empty( $attr['orderby'] ) ) {
			$attr['orderby'] = 'post__in';
		}
		$attr['include'] = $attr['ids'];
	}

/**
	 * Filters the default gallery shortcode output.
	 *
	 * If the filtered output isn't empty, it will be used instead of generating
	 * the default gallery template.
	 *
	 * @since 2.5.0
	 * @since 4.2.0 The `$instance` parameter was added.
	 *
	 * @see gallery_shortcode()
	 *
	 * @param string $output   The gallery output. Default empty.
	 * @param array  $attr     Attributes of the gallery shortcode.
	 * @param int    $instance Unique numeric ID of this gallery shortcode instance.
	 */
	$output = apply_filters( 'post_gallery', '', $attr, $instance );

if ( ! empty( $output ) ) {
		return $output;
	}

$html5 = current_theme_supports( 'html5', 'gallery' );
	$atts  = shortcode_atts(
		array(
			'order'      => 'ASC',
			'orderby'    => 'menu_order ID',
			'id'         => $post ? $post->ID : 0,
			'itemtag'    => $html5 ? 'figure' : 'dl',
			'icontag'    => $html5 ? 'div' : 'dt',
			'captiontag' => $html5 ? 'figcaption' : 'dd',
			'columns'    => 3,
			'size'       => 'thumbnail',
			'include'    => '',
			'exclude'    => '',
			'link'       => '',
		),
		$attr,
		'gallery'
	);

$id = (int) $atts['id'];

if ( ! empty( $atts['include'] ) ) {
		$_attachments = get_posts(
			array(
				'include'        => $atts['include'],
				'post_status'    => 'inherit',
				'post_type'      => 'attachment',
				'post_mime_type' => 'image',
				'order'          => $atts['order'],
				'orderby'        => $atts['orderby'],
			)
		);

$attachments = array();
		foreach ( $_attachments as $key => $val ) {
			$attachments[ $val->ID ] = $_attachments[ $key ];
		}
	} elseif ( ! empty( $atts['exclude'] ) ) {
		$post_parent_id = $id;
		$attachments    = get_children(
			array(
				'post_parent'    => $id,
				'exclude'        => $atts['exclude'],
				'post_status'    => 'inherit',
				'post_type'      => 'attachment',
				'post_mime_type' => 'image',
				'order'          => $atts['order'],
				'orderby'        => $atts['orderby'],
			)
		);
	} else {
		$post_parent_id = $id;
		$attachments    = get_children(
			array(
				'post_parent'    => $id,
				'post_status'    => 'inherit',
				'post_type'      => 'attachment',
				'post_mime_type' => 'image',
				'order'          => $atts['order'],
				'orderby'        => $atts['orderby'],
			)
		);
	}

if ( ! empty( $post_parent_id ) ) {
		$post_parent = get_post( $post_parent_id );

// Terminate the shortcode execution if the user cannot read the post or it is password-protected.
		if ( ! is_post_publicly_viewable( $post_parent->ID ) && ! current_user_can( 'read_post', $post_parent->ID )
			|| post_password_required( $post_parent )
		) {
			return '';
		}
	}

if ( empty( $attachments ) ) {
		return '';
	}

if ( is_feed() ) {
		$output = "\n";
		foreach ( $attachments as $att_id => $attachment ) {
			if ( ! empty( $atts['link'] ) ) {
				if ( 'none' === $atts['link'] ) {
					$output .= wp_get_attachment_image( $att_id, $atts['size'], false, $attr );
				} else {
					$output .= wp_get_attachment_link( $att_id, $atts['size'], false );
				}
			} else {
				$output .= wp_get_attachment_link( $att_id, $atts['size'], true );
			}
			$output .= "\n";
		}
		return $output;
	}

$itemtag    = tag_escape( $atts['itemtag'] );
	$captiontag = tag_escape( $atts['captiontag'] );
	$icontag    = tag_escape( $atts['icontag'] );
	$valid_tags = wp_kses_allowed_html( 'post' );
	if ( ! isset( $valid_tags[ $itemtag ] ) ) {
		$itemtag = 'dl';
	}
	if ( ! isset( $valid_tags[ $captiontag ] ) ) {
		$captiontag = 'dd';
	}
	if ( ! isset( $valid_tags[ $icontag ] ) ) {
		$icontag = 'dt';
	}

$columns   = (int) $atts['columns'];
	$itemwidth = $columns > 0 ? floor( 100 / $columns ) : 100;
	$float     = is_rtl() ? 'right' : 'left';

$selector = "gallery-{$instance}";

$gallery_style = '';

/**
	 * Filters whether to print default gallery styles.
	 *
	 * @since 3.1.0
	 *
	 * @param bool $print Whether to print default gallery styles.
	 *                    Defaults to false if the theme supports HTML5 galleries.
	 *                    Otherwise, defaults to true.
	 */
	if ( apply_filters( 'use_default_gallery_style', ! $html5 ) ) {
		$type_attr = current_theme_supports( 'html5', 'style' ) ? '' : ' type="text/css"';

$gallery_style = "
		<style{$type_attr}>
			#{$selector} {
				margin: auto;
			}
			#{$selector} .gallery-item {
				float: {$float};
				margin-top: 10px;
				text-align: center;
				width: {$itemwidth}%;
			}
			#{$selector} img {
				border: 2px solid #cfcfcf;
			}
			#{$selector} .gallery-caption {
				margin-left: 0;
			}
			/* see gallery_shortcode() in wp-includes/media.php */
		</style>\n\t\t";
	}

$size_class  = sanitize_html_class( is_array( $atts['size'] ) ? implode( 'x', $atts['size'] ) : $atts['size'] );
	$gallery_div = "<div id='$selector' class='gallery galleryid-{$id} gallery-columns-{$columns} gallery-size-{$size_class}'>";

/**
	 * Filters the default gallery shortcode CSS styles.
	 *
	 * @since 2.5.0
	 *
	 * @param string $gallery_style Default CSS styles and opening HTML div container
	 *                              for the gallery shortcode output.
	 */
	$output = apply_filters( 'gallery_style', $gallery_style . $gallery_div );

$i = 0;

foreach ( $attachments as $id => $attachment ) {

$attr = ( trim( $attachment->post_excerpt ) ) ? array( 'aria-describedby' => "$selector-$id" ) : '';

if ( ! empty( $atts['link'] ) && 'file' === $atts['link'] ) {
			$image_output = wp_get_attachment_link( $id, $atts['size'], false, false, false, $attr );
		} elseif ( ! empty( $atts['link'] ) && 'none' === $atts['link'] ) {
			$image_output = wp_get_attachment_image( $id, $atts['size'], false, $attr );
		} else {
			$image_output = wp_get_attachment_link( $id, $atts['size'], true, false, false, $attr );
		}

$image_meta = wp_get_attachment_metadata( $id );

$orientation = '';

if ( isset( $image_meta['height'], $image_meta['width'] ) ) {
			$orientation = ( $image_meta['height'] > $image_meta['width'] ) ? 'portrait' : 'landscape';
		}

$output .= "<{$itemtag} class='gallery-item'>";
		$output .= "
			<{$icontag} class='gallery-icon {$orientation}'>
				$image_output
			</{$icontag}>";

if ( $captiontag && trim( $attachment->post_excerpt ) ) {
			$output .= "
				<{$captiontag} class='wp-caption-text gallery-caption' id='$selector-$id'>
				" . wptexturize( $attachment->post_excerpt ) . "
				</{$captiontag}>";
		}

$output .= "</{$itemtag}>";

if ( ! $html5 && $columns > 0 && 0 === ++$i % $columns ) {
			$output .= '<br style="clear: both" />';
		}
	}

if ( ! $html5 && $columns > 0 && 0 !== $i % $columns ) {
		$output .= "
			<br style='clear: both' />";
	}

$output .= "
		</div>\n";

return $output;
}

/**
 * Outputs the templates used by playlists.
 *
 * @since 3.9.0
 */
function wp_underscore_playlist_templates() {
	?>
<script type="text/html" id="tmpl-wp-playlist-current-item">
	<# if ( data.thumb && data.thumb.src ) { #>
		<img src="{{ data.thumb.src }}" alt="" />
	<# } #>
	<div class="wp-playlist-caption">
		<span class="wp-playlist-item-meta wp-playlist-item-title">
			<# if ( data.meta.album || data.meta.artist ) { #>
				<?php
				/* translators: %s: Playlist item title. */
				printf( _x( '&#8220;%s&#8221;', 'playlist item title' ), '{{ data.title }}' );
				?>
			<# } else { #>
				{{ data.title }}
			<# } #>
		</span>
		<# if ( data.meta.album ) { #><span class="wp-playlist-item-meta wp-playlist-item-album">{{ data.meta.album }}</span><# } #>
		<# if ( data.meta.artist ) { #><span class="wp-playlist-item-meta wp-playlist-item-artist">{{ data.meta.artist }}</span><# } #>
	</div>
</script>
<script type="text/html" id="tmpl-wp-playlist-item">
	<div class="wp-playlist-item">
		<a class="wp-playlist-caption" href="{{ data.src }}">
			{{ data.index ? ( data.index + '. ' ) : '' }}
			<# if ( data.caption ) { #>
				{{ data.caption }}
			<# } else { #>
				<# if ( data.artists && data.meta.artist ) { #>
					<span class="wp-playlist-item-title">
						<?php
						/* translators: %s: Playlist item title. */
						printf( _x( '&#8220;%s&#8221;', 'playlist item title' ), '{{{ data.title }}}' );
						?>
					</span>
					<span class="wp-playlist-item-artist"> &mdash; {{ data.meta.artist }}</span>
				<# } else { #>
					<span class="wp-playlist-item-title">{{{ data.title }}}</span>
				<# } #>
			<# } #>
		</a>
		<# if ( data.meta.length_formatted ) { #>
		<div class="wp-playlist-item-length">{{ data.meta.length_formatted }}</div>
		<# } #>
	</div>
</script>
	<?php
}

/**
 * Outputs and enqueues default scripts and styles for playlists.
 *
 * @since 3.9.0
 *
 * @param string $type Type of playlist. Accepts 'audio' or 'video'.
 */
function wp_playlist_scripts( $type ) {
	wp_enqueue_style( 'wp-mediaelement' );
	wp_enqueue_script( 'wp-playlist' );
	?>

	<?php
	add_action( 'wp_footer', 'wp_underscore_playlist_templates', 0 );
	add_action( 'admin_footer', 'wp_underscore_playlist_templates', 0 );
}

/**
 * Builds the Playlist shortcode output.
 *
 * This implements the functionality of the playlist shortcode for displaying
 * a collection of WordPress audio or video files in a post.
 *
 * @since 3.9.0
 *
 * @global int $content_width
 *
 * @param array $attr {
 *     Array of default playlist attributes.
 *
 *     @type string  $type         Type of playlist to display. Accepts 'audio' or 'video'. Default 'audio'.
 *     @type string  $order        Designates ascending or descending order of items in the playlist.
 *                                 Accepts 'ASC', 'DESC'. Default 'ASC'.
 *     @type string  $orderby      Any column, or columns, to sort the playlist. If $ids are
 *                                 passed, this defaults to the order of the $ids array ('post__in').
 *                                 Otherwise default is 'menu_order ID'.
 *     @type int     $id           If an explicit $ids array is not present, this parameter
 *                                 will determine which attachments are used for the playlist.
 *                                 Default is the current post ID.
 *     @type array   $ids          Create a playlist out of these explicit attachment IDs. If empty,
 *                                 a playlist will be created from all $type attachments of $id.
 *                                 Default empty.
 *     @type array   $exclude      List of specific attachment IDs to exclude from the playlist. Default empty.
 *     @type string  $style        Playlist style to use. Accepts 'light' or 'dark'. Default 'light'.
 *     @type bool    $tracklist    Whether to show or hide the playlist. Default true.
 *     @type bool    $tracknumbers Whether to show or hide the numbers next to entries in the playlist. Default true.
 *     @type bool    $images       Show or hide the video or audio thumbnail (Featured Image/post
 *                                 thumbnail). Default true.
 *     @type bool    $artists      Whether to show or hide artist name in the playlist. Default true.
 * }
 *
 * @return string Playlist output. Empty string if the passed type is unsupported.
 */
function wp_playlist_shortcode( $attr ) {
	global $content_width;
	$post = get_post();

static $instance = 0;
	++$instance;

/**
	 * Filters the playlist output.
	 *
	 * Returning a non-empty value from the filter will short-circuit generation
	 * of the default playlist output, returning the passed value instead.
	 *
	 * @since 3.9.0
	 * @since 4.2.0 The `$instance` parameter was added.
	 *
	 * @param string $output   Playlist output. Default empty.
	 * @param array  $attr     An array of shortcode attributes.
	 * @param int    $instance Unique numeric ID of this playlist shortcode instance.
	 */
	$output = apply_filters( 'post_playlist', '', $attr, $instance );

if ( ! empty( $output ) ) {
		return $output;
	}

$atts = shortcode_atts(
		array(
			'type'         => 'audio',
			'order'        => 'ASC',
			'orderby'      => 'menu_order ID',
			'id'           => $post ? $post->ID : 0,
			'include'      => '',
			'exclude'      => '',
			'style'        => 'light',
			'tracklist'    => true,
			'tracknumbers' => true,
			'images'       => true,
			'artists'      => true,
		),
		$attr,
		'playlist'
	);

$id = (int) $atts['id'];

if ( 'audio' !== $atts['type'] ) {
		$atts['type'] = 'video';
	}

$args = array(
		'post_status'    => 'inherit',
		'post_type'      => 'attachment',
		'post_mime_type' => $atts['type'],
		'order'          => $atts['order'],
		'orderby'        => $atts['orderby'],
	);

if ( ! empty( $atts['include'] ) ) {
		$args['include'] = $atts['include'];
		$_attachments    = get_posts( $args );

$attachments = array();
		foreach ( $_attachments as $key => $val ) {
			$attachments[ $val->ID ] = $_attachments[ $key ];
		}
	} elseif ( ! empty( $atts['exclude'] ) ) {
		$args['post_parent'] = $id;
		$args['exclude']     = $atts['exclude'];
		$attachments         = get_children( $args );
	} else {
		$args['post_parent'] = $id;
		$attachments         = get_children( $args );
	}

if ( ! empty( $args['post_parent'] ) ) {
		$post_parent = get_post( $id );

// Terminate the shortcode execution if the user cannot read the post or it is password-protected.
		if ( ! current_user_can( 'read_post', $post_parent->ID ) || post_password_required( $post_parent ) ) {
			return '';
		}
	}

if ( empty( $attachments ) ) {
		return '';
	}

if ( is_feed() ) {
		$output = "\n";
		foreach ( $attachments as $att_id => $attachment ) {
			$output .= wp_get_attachment_link( $att_id ) . "\n";
		}
		return $output;
	}

$outer = 22; // Default padding and border of wrapper.

$default_width  = 640;
	$default_height = 360;

$theme_width  = empty( $content_width ) ? $default_width : ( $content_width - $outer );
	$theme_height = empty( $content_width ) ? $default_height : round( ( $default_height * $theme_width ) / $default_width );

$data = array(
		'type'         => $atts['type'],
		// Don't pass strings to JSON, will be truthy in JS.
		'tracklist'    => wp_validate_boolean( $atts['tracklist'] ),
		'tracknumbers' => wp_validate_boolean( $atts['tracknumbers'] ),
		'images'       => wp_validate_boolean( $atts['images'] ),
		'artists'      => wp_validate_boolean( $atts['artists'] ),
	);

$tracks = array();
	foreach ( $attachments as $attachment ) {
		$url   = wp_get_attachment_url( $attachment->ID );
		$ftype = wp_check_filetype( $url, wp_get_mime_types() );
		$track = array(
			'src'         => $url,
			'type'        => $ftype['type'],
			'title'       => $attachment->post_title,
			'caption'     => $attachment->post_excerpt,
			'description' => $attachment->post_content,
		);

$track['meta'] = array();
		$meta          = wp_get_attachment_metadata( $attachment->ID );
		if ( ! empty( $meta ) ) {

foreach ( wp_get_attachment_id3_keys( $attachment ) as $key => $label ) {
				if ( ! empty( $meta[ $key ] ) ) {
					$track['meta'][ $key ] = $meta[ $key ];
				}
			}

if ( 'video' === $atts['type'] ) {
				if ( ! empty( $meta['width'] ) && ! empty( $meta['height'] ) ) {
					$width        = $meta['width'];
					$height       = $meta['height'];
					$theme_height = round( ( $height * $theme_width ) / $width );
				} else {
					$width  = $default_width;
					$height = $default_height;
				}

$track['dimensions'] = array(
					'original' => compact( 'width', 'height' ),
					'resized'  => array(
						'width'  => $theme_width,
						'height' => $theme_height,
					),
				);
			}
		}

if ( $atts['images'] ) {
			$thumb_id = get_post_thumbnail_id( $attachment->ID );
			if ( ! empty( $thumb_id ) ) {
				list( $src, $width, $height ) = wp_get_attachment_image_src( $thumb_id, 'full' );
				$track['image']               = compact( 'src', 'width', 'height' );
				list( $src, $width, $height ) = wp_get_attachment_image_src( $thumb_id, 'thumbnail' );
				$track['thumb']               = compact( 'src', 'width', 'height' );
			} else {
				$src            = wp_mime_type_icon( $attachment->ID, '.svg' );
				$width          = 48;
				$height         = 64;
				$track['image'] = compact( 'src', 'width', 'height' );
				$track['thumb'] = compact( 'src', 'width', 'height' );
			}
		}

$tracks[] = $track;
	}
	$data['tracks'] = $tracks;

$safe_type  = esc_attr( $atts['type'] );
	$safe_style = esc_attr( $atts['style'] );

ob_start();

if ( 1 === $instance ) {
		/**
		 * Prints and enqueues playlist scripts, styles, and JavaScript templates.
		 *
		 * @since 3.9.0
		 *
		 * @param string $type  Type of playlist. Possible values are 'audio' or 'video'.
		 * @param string $style The 'theme' for the playlist. Core provides 'light' and 'dark'.
		 */
		do_action( 'wp_playlist_scripts', $atts['type'], $atts['style'] );
	}
	?>
<div class="wp-playlist wp-<?php echo $safe_type; ?>-playlist wp-playlist-<?php echo $safe_style; ?>">
	<?php if ( 'audio' === $atts['type'] ) : ?>
		<div class="wp-playlist-current-item"></div>
	<?php endif; ?>
	<<?php echo $safe_type; ?> controls="controls" preload="none" width="<?php echo (int) $theme_width; ?>"
		<?php
		if ( 'video' === $safe_type ) {
			echo ' height="', (int) $theme_height, '"';
		}
		?>
	></<?php echo $safe_type; ?>>
	<div class="wp-playlist-next"></div>
	<div class="wp-playlist-prev"></div>
	<noscript>
	<ol>
		<?php
		foreach ( $attachments as $att_id => $attachment ) {
			printf( '<li>%s</li>', wp_get_attachment_link( $att_id ) );
		}
		?>
	</ol>
	</noscript>
	<script type="application/json" class="wp-playlist-script"><?php echo wp_json_encode( $data ); ?></script>
</div>
	<?php
	return ob_get_clean();
}
add_shortcode( 'playlist', 'wp_playlist_shortcode' );

/**
 * Provides a No-JS Flash fallback as a last resort for audio / video.
 *
 * @since 3.6.0
 *
 * @param string $url The media element URL.
 * @return string Fallback HTML.
 */
function wp_mediaelement_fallback( $url ) {
	/**
	 * Filters the MediaElement fallback output for no-JS.
	 *
	 * @since 3.6.0
	 *
	 * @param string $output Fallback output for no-JS.
	 * @param string $url    Media file URL.
	 */
	return apply_filters( 'wp_mediaelement_fallback', sprintf( '<a href="%1$s">%1$s</a>', esc_url( $url ) ), $url );
}

/**
 * Returns a filtered list of supported audio formats.
 *
 * @since 3.6.0
 *
 * @return string[] Supported audio formats.
 */
function wp_get_audio_extensions() {
	/**
	 * Filters the list of supported audio formats.
	 *
	 * @since 3.6.0
	 *
	 * @param string[] $extensions An array of supported audio formats. Defaults are
	 *                            'mp3', 'ogg', 'flac', 'm4a', 'wav'.
	 */
	return apply_filters( 'wp_audio_extensions', array( 'mp3', 'ogg', 'flac', 'm4a', 'wav' ) );
}

/**
 * Returns useful keys to use to lookup data from an attachment's stored metadata.
 *
 * @since 3.9.0
 *
 * @param WP_Post $attachment The current attachment, provided for context.
 * @param string  $context    Optional. The context. Accepts 'edit', 'display'. Default 'display'.
 * @return string[] Key/value pairs of field keys to labels.
 */
function wp_get_attachment_id3_keys( $attachment, $context = 'display' ) {
	$fields = array(
		'artist' => __( 'Artist' ),
		'album'  => __( 'Album' ),
	);

if ( 'display' === $context ) {
		$fields['genre']            = __( 'Genre' );
		$fields['year']             = __( 'Year' );
		$fields['length_formatted'] = _x( 'Length', 'video or audio' );
	} elseif ( 'js' === $context ) {
		$fields['bitrate']      = __( 'Bitrate' );
		$fields['bitrate_mode'] = __( 'Bitrate Mode' );
	}

/**
	 * Filters the editable list of keys to look up data from an attachment's metadata.
	 *
	 * @since 3.9.0
	 *
	 * @param array   $fields     Key/value pairs of field keys to labels.
	 * @param WP_Post $attachment Attachment object.
	 * @param string  $context    The context. Accepts 'edit', 'display'. Default 'display'.
	 */
	return apply_filters( 'wp_get_attachment_id3_keys', $fields, $attachment, $context );
}
/**
 * Builds the Audio shortcode output.
 *
 * This implements the functionality of the Audio Shortcode for displaying
 * WordPress mp3s in a post.
 *
 * @since 3.6.0
 * @since 6.8.0 Added the 'muted' attribute.
 *
 * @param array  $attr {
 *     Attributes of the audio shortcode.
 *
 *     @type string $src      URL to the source of the audio file. Default empty.
 *     @type string $loop     The 'loop' attribute for the `<audio>` element. Default empty.
 *     @type string $autoplay The 'autoplay' attribute for the `<audio>` element. Default empty.
 *     @type string $muted    The 'muted' attribute for the `<audio>` element. Default 'false'.
 *     @type string $preload  The 'preload' attribute for the `<audio>` element. Default 'none'.
 *     @type string $class    The 'class' attribute for the `<audio>` element. Default 'wp-audio-shortcode'.
 *     @type string $style    The 'style' attribute for the `<audio>` element. Default 'width: 100%;'.
 * }
 * @param string $content Shortcode content.
 * @return string|void HTML content to display audio.
 */
function wp_audio_shortcode( $attr, $content = '' ) {
	$post_id = get_post() ? get_the_ID() : 0;

static $instance = 0;
	++$instance;

/**
	 * Filters the default audio shortcode output.
	 *
	 * If the filtered output isn't empty, it will be used instead of generating the default audio template.
	 *
	 * @since 3.6.0
	 *
	 * @param string $html     Empty variable to be replaced with shortcode markup.
	 * @param array  $attr     Attributes of the shortcode. See {@see wp_audio_shortcode()}.
	 * @param string $content  Shortcode content.
	 * @param int    $instance Unique numeric ID of this audio shortcode instance.
	 */
	$override = apply_filters( 'wp_audio_shortcode_override', '', $attr, $content, $instance );

if ( '' !== $override ) {
		return $override;
	}

$audio = null;

$default_types = wp_get_audio_extensions();
	$defaults_atts = array(
		'src'      => '',
		'loop'     => '',
		'autoplay' => '',
		'muted'    => 'false',
		'preload'  => 'none',
		'class'    => 'wp-audio-shortcode',
		'style'    => 'width: 100%;',
	);
	foreach ( $default_types as $type ) {
		$defaults_atts[ $type ] = '';
	}

$atts = shortcode_atts( $defaults_atts, $attr, 'audio' );

$primary = false;
	if ( ! empty( $atts['src'] ) ) {
		$type = wp_check_filetype( $atts['src'], wp_get_mime_types() );

if ( ! in_array( strtolower( $type['ext'] ), $default_types, true ) ) {
			return sprintf( '<a class="wp-embedded-audio" href="%s">%s</a>', esc_url( $atts['src'] ), esc_html( $atts['src'] ) );
		}

$primary = true;
		array_unshift( $default_types, 'src' );
	} else {
		foreach ( $default_types as $ext ) {
			if ( ! empty( $atts[ $ext ] ) ) {
				$type = wp_check_filetype( $atts[ $ext ], wp_get_mime_types() );

if ( strtolower( $type['ext'] ) === $ext ) {
					$primary = true;
				}
			}
		}
	}

if ( ! $primary ) {
		$audios = get_attached_media( 'audio', $post_id );

if ( empty( $audios ) ) {
			return;
		}

$audio       = reset( $audios );
		$atts['src'] = wp_get_attachment_url( $audio->ID );

if ( empty( $atts['src'] ) ) {
			return;
		}

array_unshift( $default_types, 'src' );
	}

/**
	 * Filters the media library used for the audio shortcode.
	 *
	 * @since 3.6.0
	 *
	 * @param string $library Media library used for the audio shortcode.
	 */
	$library = apply_filters( 'wp_audio_shortcode_library', 'mediaelement' );

if ( 'mediaelement' === $library && did_action( 'init' ) ) {
		wp_enqueue_style( 'wp-mediaelement' );
		wp_enqueue_script( 'wp-mediaelement' );
	}

/**
	 * Filters the class attribute for the audio shortcode output container.
	 *
	 * @since 3.6.0
	 * @since 4.9.0 The `$atts` parameter was added.
	 *
	 * @param string $class CSS class or list of space-separated classes.
	 * @param array  $atts  Array of audio shortcode attributes.
	 */
	$atts['class'] = apply_filters( 'wp_audio_shortcode_class', $atts['class'], $atts );

$html_atts = array(
		'class'    => $atts['class'],
		'id'       => sprintf( 'audio-%d-%d', $post_id, $instance ),
		'loop'     => wp_validate_boolean( $atts['loop'] ),
		'autoplay' => wp_validate_boolean( $atts['autoplay'] ),
		'muted'    => wp_validate_boolean( $atts['muted'] ),
		'preload'  => $atts['preload'],
		'style'    => $atts['style'],
	);

// These ones should just be omitted altogether if they are blank.
	foreach ( array( 'loop', 'autoplay', 'preload', 'muted' ) as $a ) {
		if ( empty( $html_atts[ $a ] ) ) {
			unset( $html_atts[ $a ] );
		}
	}

$attr_strings = array();

foreach ( $html_atts as $attribute_name => $attribute_value ) {
		if ( in_array( $attribute_name, array( 'loop', 'autoplay', 'muted' ), true ) && true === $attribute_value ) {
			// Add boolean attributes without a value.
			$attr_strings[] = esc_attr( $attribute_name );
		} elseif ( 'preload' === $attribute_name && ! empty( $attribute_value ) ) {
			// Handle the preload attribute with specific allowed values.
			$allowed_preload_values = array( 'none', 'metadata', 'auto' );
			if ( in_array( $attribute_value, $allowed_preload_values, true ) ) {
				$attr_strings[] = sprintf( '%s="%s"', esc_attr( $attribute_name ), esc_attr( $attribute_value ) );
			}
		} else {
			// For other attributes, include the value.
			$attr_strings[] = sprintf( '%s="%s"', esc_attr( $attribute_name ), esc_attr( $attribute_value ) );
		}
	}

$html = '';

if ( 'mediaelement' === $library && 1 === $instance ) {
		$html .= "\n";
	}

$html .= sprintf( '<audio %s controls="controls">', implode( ' ', $attr_strings ) );

$fileurl = '';
	$source  = '<source type="%s" src="%s" />';

foreach ( $default_types as $fallback ) {
		if ( ! empty( $atts[ $fallback ] ) ) {
			if ( empty( $fileurl ) ) {
				$fileurl = $atts[ $fallback ];
			}

$type  = wp_check_filetype( $atts[ $fallback ], wp_get_mime_types() );
			$url   = add_query_arg( '_', $instance, $atts[ $fallback ] );
			$html .= sprintf( $source, $type['type'], esc_url( $url ) );
		}
	}

if ( 'mediaelement' === $library ) {
		$html .= wp_mediaelement_fallback( $fileurl );
	}

$html .= '</audio>';

/**
	 * Filters the audio shortcode output.
	 *
	 * @since 3.6.0
	 *
	 * @param string $html    Audio shortcode HTML output.
	 * @param array  $atts    Array of audio shortcode attributes.
	 * @param string $audio   Audio file.
	 * @param int    $post_id Post ID.
	 * @param string $library Media library used for the audio shortcode.
	 */
	return apply_filters( 'wp_audio_shortcode', $html, $atts, $audio, $post_id, $library );
}
add_shortcode( 'audio', 'wp_audio_shortcode' );

/**
 * Returns a filtered list of supported video formats.
 *
 * @since 3.6.0
 *
 * @return string[] List of supported video formats.
 */
function wp_get_video_extensions() {
	/**
	 * Filters the list of supported video formats.
	 *
	 * @since 3.6.0
	 *
	 * @param string[] $extensions An array of supported video formats. Defaults are
	 *                             'mp4', 'm4v', 'webm', 'ogv', 'flv'.
	 */
	return apply_filters( 'wp_video_extensions', array( 'mp4', 'm4v', 'webm', 'ogv', 'flv' ) );
}

/**
 * Builds the Video shortcode output.
 *
 * This implements the functionality of the Video Shortcode for displaying
 * WordPress mp4s in a post.
 *
 * @since 3.6.0
 *
 * @global int $content_width
 *
 * @param array  $attr {
 *     Attributes of the shortcode.
 *
 *     @type string $src      URL to the source of the video file. Default empty.
 *     @type int    $height   Height of the video embed in pixels. Default 360.
 *     @type int    $width    Width of the video embed in pixels. Default $content_width or 640.
 *     @type string $poster   The 'poster' attribute for the `<video>` element. Default empty.
 *     @type string $loop     The 'loop' attribute for the `<video>` element. Default empty.
 *     @type string $autoplay The 'autoplay' attribute for the `<video>` element. Default empty.
 *     @type string $muted    The 'muted' attribute for the `<video>` element. Default false.
 *     @type string $preload  The 'preload' attribute for the `<video>` element.
 *                            Default 'metadata'.
 *     @type string $class    The 'class' attribute for the `<video>` element.
 *                            Default 'wp-video-shortcode'.
 * }
 * @param string $content Shortcode content.
 * @return string|void HTML content to display video.
 */
function wp_video_shortcode( $attr, $content = '' ) {
	global $content_width;
	$post_id = get_post() ? get_the_ID() : 0;

static $instance = 0;
	++$instance;

/**
	 * Filters the default video shortcode output.
	 *
	 * If the filtered output isn't empty, it will be used instead of generating
	 * the default video template.
	 *
	 * @since 3.6.0
	 *
	 * @see wp_video_shortcode()
	 *
	 * @param string $html     Empty variable to be replaced with shortcode markup.
	 * @param array  $attr     Attributes of the shortcode. See {@see wp_video_shortcode()}.
	 * @param string $content  Video shortcode content.
	 * @param int    $instance Unique numeric ID of this video shortcode instance.
	 */
	$override = apply_filters( 'wp_video_shortcode_override', '', $attr, $content, $instance );

if ( '' !== $override ) {
		return $override;
	}

$video = null;

$default_types = wp_get_video_extensions();
	$defaults_atts = array(
		'src'      => '',
		'poster'   => '',
		'loop'     => '',
		'autoplay' => '',
		'muted'    => 'false',
		'preload'  => 'metadata',
		'width'    => 640,
		'height'   => 360,
		'class'    => 'wp-video-shortcode',
	);

foreach ( $default_types as $type ) {
		$defaults_atts[ $type ] = '';
	}

$atts = shortcode_atts( $defaults_atts, $attr, 'video' );

if ( is_admin() ) {
		// Shrink the video so it isn't huge in the admin.
		if ( $atts['width'] > $defaults_atts['width'] ) {
			$atts['height'] = round( ( $atts['height'] * $defaults_atts['width'] ) / $atts['width'] );
			$atts['width']  = $defaults_atts['width'];
		}
	} else {
		// If the video is bigger than the theme.
		if ( ! empty( $content_width ) && $atts['width'] > $content_width ) {
			$atts['height'] = round( ( $atts['height'] * $content_width ) / $atts['width'] );
			$atts['width']  = $content_width;
		}
	}

$is_vimeo      = false;
	$is_youtube    = false;
	$yt_pattern    = '#^https?://(?:www\.)?(?:youtube\.com/watch|youtu\.be/)#';
	$vimeo_pattern = '#^https?://(.+\.)?vimeo\.com/.*#';

$primary = false;
	if ( ! empty( $atts['src'] ) ) {
		$is_vimeo   = ( preg_match( $vimeo_pattern, $atts['src'] ) );
		$is_youtube = ( preg_match( $yt_pattern, $atts['src'] ) );

if ( ! $is_youtube && ! $is_vimeo ) {
			$type = wp_check_filetype( $atts['src'], wp_get_mime_types() );

if ( ! in_array( strtolower( $type['ext'] ), $default_types, true ) ) {
				return sprintf( '<a class="wp-embedded-video" href="%s">%s</a>', esc_url( $atts['src'] ), esc_html( $atts['src'] ) );
			}
		}

if ( $is_vimeo ) {
			wp_enqueue_script( 'mediaelement-vimeo' );
		}

if ( ! $primary ) {
		$videos = get_attached_media( 'video', $post_id );
		if ( empty( $videos ) ) {
			return;
		}

$video       = reset( $videos );
		$atts['src'] = wp_get_attachment_url( $video->ID );
		if ( empty( $atts['src'] ) ) {
			return;
		}

array_unshift( $default_types, 'src' );
	}

/**
	 * Filters the media library used for the video shortcode.
	 *
	 * @since 3.6.0
	 *
	 * @param string $library Media library used for the video shortcode.
	 */
	$library = apply_filters( 'wp_video_shortcode_library', 'mediaelement' );
	if ( 'mediaelement' === $library && did_action( 'init' ) ) {
		wp_enqueue_style( 'wp-mediaelement' );
		wp_enqueue_script( 'wp-mediaelement' );
		wp_enqueue_script( 'mediaelement-vimeo' );
	}

/*
	 * MediaElement.js has issues with some URL formats for Vimeo and YouTube,
	 * so update the URL to prevent the ME.js player from breaking.
	 */
	if ( 'mediaelement' === $library ) {
		if ( $is_youtube ) {
			// Remove `feature` query arg and force SSL - see #40866.
			$atts['src'] = remove_query_arg( 'feature', $atts['src'] );
			$atts['src'] = set_url_scheme( $atts['src'], 'https' );
		} elseif ( $is_vimeo ) {
			// Remove all query arguments and force SSL - see #40866.
			$parsed_vimeo_url = wp_parse_url( $atts['src'] );
			$vimeo_src        = 'https://' . $parsed_vimeo_url['host'] . $parsed_vimeo_url['path'];

// Add loop param for mejs bug - see #40977, not needed after #39686.
			$loop        = $atts['loop'] ? '1' : '0';
			$atts['src'] = add_query_arg( 'loop', $loop, $vimeo_src );
		}
	}

/**
	 * Filters the class attribute for the video shortcode output container.
	 *
	 * @since 3.6.0
	 * @since 4.9.0 The `$atts` parameter was added.
	 *
	 * @param string $class CSS class or list of space-separated classes.
	 * @param array  $atts  Array of video shortcode attributes.
	 */
	$atts['class'] = apply_filters( 'wp_video_shortcode_class', $atts['class'], $atts );

$html_atts = array(
		'class'    => $atts['class'],
		'id'       => sprintf( 'video-%d-%d', $post_id, $instance ),
		'width'    => absint( $atts['width'] ),
		'height'   => absint( $atts['height'] ),
		'poster'   => esc_url( $atts['poster'] ),
		'loop'     => wp_validate_boolean( $atts['loop'] ),
		'autoplay' => wp_validate_boolean( $atts['autoplay'] ),
		'muted'    => wp_validate_boolean( $atts['muted'] ),
		'preload'  => $atts['preload'],
	);

// These ones should just be omitted altogether if they are blank.
	foreach ( array( 'poster', 'loop', 'autoplay', 'preload', 'muted' ) as $a ) {
		if ( empty( $html_atts[ $a ] ) ) {
			unset( $html_atts[ $a ] );
		}
	}

$attr_strings = array();
	foreach ( $html_atts as $attribute_name => $attribute_value ) {
		if ( in_array( $attribute_name, array( 'loop', 'autoplay', 'muted' ), true ) && true === $attribute_value ) {
			// Add boolean attributes without their value for true.
			$attr_strings[] = esc_attr( $attribute_name );
		} elseif ( 'preload' === $attribute_name && ! empty( $attribute_value ) ) {
			// Handle the preload attribute with specific allowed values.
			$allowed_preload_values = array( 'none', 'metadata', 'auto' );
			if ( in_array( $attribute_value, $allowed_preload_values, true ) ) {
				$attr_strings[] = sprintf( '%s="%s"', esc_attr( $attribute_name ), esc_attr( $attribute_value ) );
			}
		} elseif ( ! empty( $attribute_value ) ) {
			// For non-boolean attributes, add them with their value.
			$attr_strings[] = sprintf( '%s="%s"', esc_attr( $attribute_name ), esc_attr( $attribute_value ) );
		}
	}

$html = '';

if ( 'mediaelement' === $library && 1 === $instance ) {
		$html .= "\n";
	}

$html .= sprintf( '<video %s controls="controls">', implode( ' ', $attr_strings ) );

$fileurl = '';
	$source  = '<source type="%s" src="%s" />';

foreach ( $default_types as $fallback ) {
		if ( ! empty( $atts[ $fallback ] ) ) {
			if ( empty( $fileurl ) ) {
				$fileurl = $atts[ $fallback ];
			}
			if ( 'src' === $fallback && $is_youtube ) {
				$type = array( 'type' => 'video/youtube' );
			} elseif ( 'src' === $fallback && $is_vimeo ) {
				$type = array( 'type' => 'video/vimeo' );
			} else {
				$type = wp_check_filetype( $atts[ $fallback ], wp_get_mime_types() );
			}
			$url   = add_query_arg( '_', $instance, $atts[ $fallback ] );
			$html .= sprintf( $source, $type['type'], esc_url( $url ) );
		}
	}

if ( ! empty( $content ) ) {
		if ( str_contains( $content, "\n" ) ) {
			$content = str_replace( array( "\r\n", "\n", "\t" ), '', $content );
		}
		$html .= trim( $content );
	}

if ( 'mediaelement' === $library ) {
		$html .= wp_mediaelement_fallback( $fileurl );
	}
	$html .= '</video>';

$width_rule = '';
	if ( ! empty( $atts['width'] ) ) {
		$width_rule = sprintf( 'width: %dpx;', $atts['width'] );
	}
	$output = sprintf( '<div style="%s" class="wp-video">%s</div>', $width_rule, $html );

/**
	 * Filters the output of the video shortcode.
	 *
	 * @since 3.6.0
	 *
	 * @param string $output  Video shortcode HTML output.
	 * @param array  $atts    Array of video shortcode attributes.
	 * @param string $video   Video file.
	 * @param int    $post_id Post ID.
	 * @param string $library Media library used for the video shortcode.
	 */
	return apply_filters( 'wp_video_shortcode', $output, $atts, $video, $post_id, $library );
}
add_shortcode( 'video', 'wp_video_shortcode' );

/**
 * Gets the previous image link that has the same post parent.
 *
 * @since 5.8.0
 *
 * @see get_adjacent_image_link()
 *
 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array
 *                           of width and height values in pixels (in that order). Default 'thumbnail'.
 * @param string|false $text Optional. Link text. Default false.
 * @return string Markup for previous image link.
 */
function get_previous_image_link( $size = 'thumbnail', $text = false ) {
	return get_adjacent_image_link( true, $size, $text );
}

/**
 * Displays previous image link that has the same post parent.
 *
 * @since 2.5.0
 *
 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array
 *                           of width and height values in pixels (in that order). Default 'thumbnail'.
 * @param string|false $text Optional. Link text. Default false.
 */
function previous_image_link( $size = 'thumbnail', $text = false ) {
	echo get_previous_image_link( $size, $text );
}

/**
 * Gets the next image link that has the same post parent.
 *
 * @since 5.8.0
 *
 * @see get_adjacent_image_link()
 *
 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array
 *                           of width and height values in pixels (in that order). Default 'thumbnail'.
 * @param string|false $text Optional. Link text. Default false.
 * @return string Markup for next image link.
 */
function get_next_image_link( $size = 'thumbnail', $text = false ) {
	return get_adjacent_image_link( false, $size, $text );
}

/**
 * Displays next image link that has the same post parent.
 *
 * @since 2.5.0
 *
 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array
 *                           of width and height values in pixels (in that order). Default 'thumbnail'.
 * @param string|false $text Optional. Link text. Default false.
 */
function next_image_link( $size = 'thumbnail', $text = false ) {
	echo get_next_image_link( $size, $text );
}

/**
 * Gets the next or previous image link that has the same post parent.
 *
 * Retrieves the current attachment object from the $post global.
 *
 * @since 5.8.0
 *
 * @param bool         $prev Optional. Whether to display the next (false) or previous (true) link. Default true.
 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array
 *                           of width and height values in pixels (in that order). Default 'thumbnail'.
 * @param bool         $text Optional. Link text. Default false.
 * @return string Markup for image link.
 */
function get_adjacent_image_link( $prev = true, $size = 'thumbnail', $text = false ) {
	$post        = get_post();
	$attachments = array_values(
		get_children(
			array(
				'post_parent'    => $post->post_parent,
				'post_status'    => 'inherit',
				'post_type'      => 'attachment',
				'post_mime_type' => 'image',
				'order'          => 'ASC',
				'orderby'        => 'menu_order ID',
			)
		)
	);

foreach ( $attachments as $k => $attachment ) {
		if ( (int) $attachment->ID === (int) $post->ID ) {
			break;
		}
	}

$output        = '';
	$attachment_id = 0;

if ( $attachments ) {
		$k = $prev ? $k - 1 : $k + 1;

if ( isset( $attachments[ $k ] ) ) {
			$attachment_id = $attachments[ $k ]->ID;
			$attr          = array( 'alt' => get_the_title( $attachment_id ) );
			$output        = wp_get_attachment_link( $attachment_id, $size, true, false, $text, $attr );
		}
	}

$adjacent = $prev ? 'previous' : 'next';

/**
	 * Filters the adjacent image link.
	 *
	 * The dynamic portion of the hook name, `$adjacent`, refers to the type of adjacency,
	 * either 'next', or 'previous'.
	 *
	 * Possible hook names include:
	 *
	 *  - `next_image_link`
	 *  - `previous_image_link`
	 *
	 * @since 3.5.0
	 *
	 * @param string $output        Adjacent image HTML markup.
	 * @param int    $attachment_id Attachment ID
	 * @param string|int[] $size    Requested image size. Can be any registered image size name, or
	 *                              an array of width and height values in pixels (in that order).
	 * @param string $text          Link text.
	 */
	return apply_filters( "{$adjacent}_image_link", $output, $attachment_id, $size, $text );
}

/**
 * Displays next or previous image link that has the same post parent.
 *
 * Retrieves the current attachment object from the $post global.
 *
 * @since 2.5.0
 *
 * @param bool         $prev Optional. Whether to display the next (false) or previous (true) link. Default true.
 * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array
 *                           of width and height values in pixels (in that order). Default 'thumbnail'.
 * @param bool         $text Optional. Link text. Default false.
 */
function adjacent_image_link( $prev = true, $size = 'thumbnail', $text = false ) {
	echo get_adjacent_image_link( $prev, $size, $text );
}

/**
 * Retrieves taxonomies attached to given the attachment.
 *
 * @since 2.5.0
 * @since 4.7.0 Introduced the `$output` parameter.
 *
 * @param int|array|object $attachment Attachment ID, data array, or data object.
 * @param string           $output     Output type. 'names' to return an array of taxonomy names,
 *                                     or 'objects' to return an array of taxonomy objects.
 *                                     Default is 'names'.
 * @return string[]|WP_Taxonomy[] List of taxonomies or taxonomy names. Empty array on failure.
 */
function get_attachment_taxonomies( $attachment, $output = 'names' ) {
	if ( is_int( $attachment ) ) {
		$attachment = get_post( $attachment );
	} elseif ( is_array( $attachment ) ) {
		$attachment = (object) $attachment;
	}

if ( ! is_object( $attachment ) ) {
		return array();
	}

$file     = get_attached_file( $attachment->ID );
	$filename = wp_basename( $file );

$objects = array( 'attachment' );

if ( str_contains( $filename, '.' ) ) {
		$objects[] = 'attachment:' . substr( $filename, strrpos( $filename, '.' ) + 1 );
	}

if ( ! empty( $attachment->post_mime_type ) ) {
		$objects[] = 'attachment:' . $attachment->post_mime_type;

if ( str_contains( $attachment->post_mime_type, '/' ) ) {
			foreach ( explode( '/', $attachment->post_mime_type ) as $token ) {
				if ( ! empty( $token ) ) {
					$objects[] = "attachment:$token";
				}
			}
		}
	}

$taxonomies = array();

foreach ( $objects as $object ) {
		$taxes = get_object_taxonomies( $object, $output );

if ( $taxes ) {
			$taxonomies = array_merge( $taxonomies, $taxes );
		}
	}

if ( 'names' === $output ) {
		$taxonomies = array_unique( $taxonomies );
	}

return $taxonomies;
}

/**
 * Retrieves all of the taxonomies that are registered for attachments.
 *
 * Handles mime-type-specific taxonomies such as attachment:image and attachment:video.
 *
 * @since 3.5.0
 *
 * @see get_taxonomies()
 *
 * @param string $output Optional. The type of taxonomy output to return. Accepts 'names' or 'objects'.
 *                       Default 'names'.
 * @return string[]|WP_Taxonomy[] Array of names or objects of registered taxonomies for attachments.
 */
function get_taxonomies_for_attachments( $output = 'names' ) {
	$taxonomies = array();

foreach ( get_taxonomies( array(), 'objects' ) as $taxonomy ) {
		foreach ( $taxonomy->object_type as $object_type ) {
			if ( 'attachment' === $object_type || str_starts_with( $object_type, 'attachment:' ) ) {
				if ( 'names' === $output ) {
					$taxonomies[] = $taxonomy->name;
				} else {
					$taxonomies[ $taxonomy->name ] = $taxonomy;
				}
				break;
			}
		}
	}

return $taxonomies;
}

/**
 * Determines whether the value is an acceptable type for GD image functions.
 *
 * In PHP 8.0, the GD extension uses GdImage objects for its data structures.
 * This function checks if the passed value is either a GdImage object instance
 * or a resource of type `gd`. Any other type will return false.
 *
 * @since 5.6.0
 *
 * @param resource|GdImage|false $image A value to check the type for.
 * @return bool True if `$image` is either a GD image resource or a GdImage instance,
 *              false otherwise.
 */
function is_gd_image( $image ) {
	if ( $image instanceof GdImage
		|| is_resource( $image ) && 'gd' === get_resource_type( $image )
	) {
		return true;
	}

return false;
}

/**
 * Creates a new GD image resource with transparency support.
 *
 * @todo Deprecate if possible.
 *
 * @since 2.9.0
 *
 * @param int $width  Image width in pixels.
 * @param int $height Image height in pixels.
 * @return resource|GdImage|false The GD image resource or GdImage instance on success.
 *                                False on failure.
 */
function wp_imagecreatetruecolor( $width, $height ) {
	$img = imagecreatetruecolor( $width, $height );

if ( is_gd_image( $img )
		&& function_exists( 'imagealphablending' ) && function_exists( 'imagesavealpha' )
	) {
		imagealphablending( $img, false );
		imagesavealpha( $img, true );
	}

return $img;
}

/**
 * Based on a supplied width/height example, returns the biggest possible dimensions based on the max width/height.
 *
 * @since 2.9.0
 *
 * @see wp_constrain_dimensions()
 *
 * @param int $example_width  The width of an example embed.
 * @param int $example_height The height of an example embed.
 * @param int $max_width      The maximum allowed width.
 * @param int $max_height     The maximum allowed height.
 * @return int[] {
 *     An array of maximum width and height values.
 *
 *     @type int $0 The maximum width in pixels.
 *     @type int $1 The maximum height in pixels.
 * }
 */
function wp_expand_dimensions( $example_width, $example_height, $max_width, $max_height ) {
	$example_width  = (int) $example_width;
	$example_height = (int) $example_height;
	$max_width      = (int) $max_width;
	$max_height     = (int) $max_height;

return wp_constrain_dimensions( $example_width * 1000000, $example_height * 1000000, $max_width, $max_height );
}

/**
 * Determines the maximum upload size allowed in php.ini.
 *
 * @since 2.5.0
 *
 * @return int Allowed upload size.
 */
function wp_max_upload_size() {
	$u_bytes = wp_convert_hr_to_bytes( ini_get( 'upload_max_filesize' ) );
	$p_bytes = wp_convert_hr_to_bytes( ini_get( 'post_max_size' ) );

/**
	 * Filters the maximum upload size allowed in php.ini.
	 *
	 * @since 2.5.0
	 *
	 * @param int $size    Max upload size limit in bytes.
	 * @param int $u_bytes Maximum upload filesize in bytes.
	 * @param int $p_bytes Maximum size of POST data in bytes.
	 */
	return apply_filters( 'upload_size_limit', min( $u_bytes, $p_bytes ), $u_bytes, $p_bytes );
}

/**
 * Returns a WP_Image_Editor instance and loads file into it.
 *
 * @since 3.5.0
 *
 * @param string $path Path to the file to load.
 * @param array  $args Optional. Additional arguments for retrieving the image editor.
 *                     Default empty array.
 * @return WP_Image_Editor|WP_Error The WP_Image_Editor object on success,
 *                                  a WP_Error object otherwise.
 */
function wp_get_image_editor( $path, $args = array() ) {
	$args['path'] = $path;

// If the mime type is not set in args, try to extract and set it from the file.
	if ( ! isset( $args['mime_type'] ) ) {
		$file_info = wp_check_filetype( $args['path'] );

/*
		 * If $file_info['type'] is false, then we let the editor attempt to
		 * figure out the file type, rather than forcing a failure based on extension.
		 */
		if ( isset( $file_info ) && $file_info['type'] ) {
			$args['mime_type'] = $file_info['type'];
		}
	}

// Check and set the output mime type mapped to the input type.
	if ( isset( $args['mime_type'] ) ) {
		$output_format = wp_get_image_editor_output_format( $path, $args['mime_type'] );
		if ( isset( $output_format[ $args['mime_type'] ] ) ) {
			$args['output_mime_type'] = $output_format[ $args['mime_type'] ];
		}
	}

$implementation = _wp_image_editor_choose( $args );

if ( $implementation ) {
		$editor = new $implementation( $path );
		$loaded = $editor->load();

if ( is_wp_error( $loaded ) ) {
			return $loaded;
		}

return $editor;
	}

return new WP_Error( 'image_no_editor', __( 'No editor could be selected.' ) );
}

/**
 * Tests whether there is an editor that supports a given mime type or methods.
 *
 * @since 3.5.0
 *
 * @param string|array $args Optional. Array of arguments to retrieve the image editor supports.
 *                           Default empty array.
 * @return bool True if an eligible editor is found; false otherwise.
 */
function wp_image_editor_supports( $args = array() ) {
	return (bool) _wp_image_editor_choose( $args );
}

/**
 * Tests which editors are capable of supporting the request.
 *
 * @ignore
 * @since 3.5.0
 *
 * @param array $args Optional. Array of arguments for choosing a capable editor. Default empty array.
 * @return string|false Class name for the first editor that claims to support the request.
 *                      False if no editor claims to support the request.
 */
function _wp_image_editor_choose( $args = array() ) {
	require_once ABSPATH . WPINC . '/class-wp-image-editor.php';
	require_once ABSPATH . WPINC . '/class-wp-image-editor-gd.php';
	require_once ABSPATH . WPINC . '/class-wp-image-editor-imagick.php';
	require_once ABSPATH . WPINC . '/class-avif-info.php';
	/**
	 * Filters the list of image editing library classes.
	 *
	 * @since 3.5.0
	 *
	 * @param string[] $image_editors Array of available image editor class names. Defaults are
	 *                                'WP_Image_Editor_Imagick', 'WP_Image_Editor_GD'.
	 */
	$implementations = apply_filters( 'wp_image_editors', array( 'WP_Image_Editor_Imagick', 'WP_Image_Editor_GD' ) );

$editors = wp_cache_get( 'wp_image_editor_choose', 'image_editor' );

if ( ! is_array( $editors ) ) {
		$editors = array();
	}

// Cache the chosen editor implementation based on specific args and available implementations.
	$cache_key = md5( serialize( array( $args, $implementations ) ) );

if ( isset( $editors[ $cache_key ] ) ) {
		return $editors[ $cache_key ];
	}

// Assume no support until a capable implementation is identified.
	$editor = false;

foreach ( $implementations as $implementation ) {
		if ( ! call_user_func( array( $implementation, 'test' ), $args ) ) {
			continue;
		}

// Implementation should support the passed mime type.
		if ( isset( $args['mime_type'] ) &&
			! call_user_func(
				array( $implementation, 'supports_mime_type' ),
				$args['mime_type']
			) ) {
			continue;
		}

// Implementation should support requested methods.
		if ( isset( $args['methods'] ) &&
			array_diff( $args['methods'], get_class_methods( $implementation ) ) ) {

continue;
		}

// Implementation should ideally support the output mime type as well if set and different than the passed type.
		if (
			isset( $args['mime_type'] ) &&
			isset( $args['output_mime_type'] ) &&
			$args['mime_type'] !== $args['output_mime_type'] &&
			! call_user_func( array( $implementation, 'supports_mime_type' ), $args['output_mime_type'] )
		) {
			/*
			 * This implementation supports the input type but not the output type.
			 * Keep looking to see if we can find an implementation that supports both.
			 */
			$editor = $implementation;
			continue;
		}

// Favor the implementation that supports both input and output mime types.
		$editor = $implementation;
		break;
	}

$editors[ $cache_key ] = $editor;

wp_cache_set( 'wp_image_editor_choose', $editors, 'image_editor', DAY_IN_SECONDS );

return $editor;
}

/**
 * Prints default Plupload arguments.
 *
 * @since 3.4.0
 */
function wp_plupload_default_settings() {
	$wp_scripts = wp_scripts();

$data = $wp_scripts->get_data( 'wp-plupload', 'data' );
	if ( $data && str_contains( $data, '_wpPluploadSettings' ) ) {
		return;
	}

$max_upload_size    = wp_max_upload_size();
	$allowed_extensions = array_keys( get_allowed_mime_types() );
	$extensions         = array();
	foreach ( $allowed_extensions as $extension ) {
		$extensions = array_merge( $extensions, explode( '|', $extension ) );
	}

/*
	 * Since 4.9 the `runtimes` setting is hardcoded in our version of Plupload to `html5,html4`,
	 * and the `flash_swf_url` and `silverlight_xap_url` are not used.
	 */
	$defaults = array(
		'file_data_name' => 'async-upload', // Key passed to $_FILE.
		'url'            => admin_url( 'async-upload.php', 'relative' ),
		'filters'        => array(
			'max_file_size' => $max_upload_size . 'b',
			'mime_types'    => array( array( 'extensions' => implode( ',', $extensions ) ) ),
		),
	);

/*
	 * Currently only iOS Safari supports multiple files uploading,
	 * but iOS 7.x has a bug that prevents uploading of videos when enabled.
	 * See #29602.
	 */
	if ( wp_is_mobile()
		&& str_contains( $_SERVER['HTTP_USER_AGENT'], 'OS 7_' )
		&& str_contains( $_SERVER['HTTP_USER_AGENT'], 'like Mac OS X' )
	) {
		$defaults['multi_selection'] = false;
	}

// Check if WebP images can be edited.
	if ( ! wp_image_editor_supports( array( 'mime_type' => 'image/webp' ) ) ) {
		$defaults['webp_upload_error'] = true;
	}

// Check if AVIF images can be edited.
	if ( ! wp_image_editor_supports( array( 'mime_type' => 'image/avif' ) ) ) {
		$defaults['avif_upload_error'] = true;
	}

// Check if HEIC images can be edited.
	if ( ! wp_image_editor_supports( array( 'mime_type' => 'image/heic' ) ) ) {
		$defaults['heic_upload_error'] = true;
	}

/**
	 * Filters the Plupload default settings.
	 *
	 * @since 3.4.0
	 *
	 * @param array $defaults Default Plupload settings array.
	 */
	$defaults = apply_filters( 'plupload_default_settings', $defaults );

$params = array(
		'action' => 'upload-attachment',
	);

/**
	 * Filters the Plupload default parameters.
	 *
	 * @since 3.4.0
	 *
	 * @param array $params Default Plupload parameters array.
	 */
	$params = apply_filters( 'plupload_default_params', $params );

$params['_wpnonce'] = wp_create_nonce( 'media-form' );

$defaults['multipart_params'] = $params;

$settings = array(
		'defaults'      => $defaults,
		'browser'       => array(
			'mobile'    => wp_is_mobile(),
			'supported' => _device_can_upload(),
		),
		'limitExceeded' => is_multisite() && ! is_upload_space_available(),
	);

$script = 'var _wpPluploadSettings = ' . wp_json_encode( $settings ) . ';';

if ( $data ) {
		$script = "$data\n$script";
	}

$wp_scripts->add_data( 'wp-plupload', 'data', $script );
}

/**
 * Prepares an attachment post object for JS, where it is expected
 * to be JSON-encoded and fit into an Attachment model.
 *
 * @since 3.5.0
 *
 * @param int|WP_Post $attachment Attachment ID or object.
 * @return array|void {
 *     Array of attachment details, or void if the parameter does not correspond to an attachment.
 *
 *     @type string $alt                   Alt text of the attachment.
 *     @type string $author                ID of the attachment author, as a string.
 *     @type string $authorName            Name of the attachment author.
 *     @type string $caption               Caption for the attachment.
 *     @type array  $compat                Containing item and meta.
 *     @type string $context               Context, whether it's used as the site icon for example.
 *     @type int    $date                  Uploaded date, timestamp in milliseconds.
 *     @type string $dateFormatted         Formatted date (e.g. June 29, 2018).
 *     @type string $description           Description of the attachment.
 *     @type string $editLink              URL to the edit page for the attachment.
 *     @type string $filename              File name of the attachment.
 *     @type string $filesizeHumanReadable Filesize of the attachment in human readable format (e.g. 1 MB).
 *     @type int    $filesizeInBytes       Filesize of the attachment in bytes.
 *     @type int    $height                If the attachment is an image, represents the height of the image in pixels.
 *     @type string $icon                  Icon URL of the attachment (e.g. /wp-includes/images/media/archive.png).
 *     @type int    $id                    ID of the attachment.
 *     @type string $link                  URL to the attachment.
 *     @type int    $menuOrder             Menu order of the attachment post.
 *     @type array  $meta                  Meta data for the attachment.
 *     @type string $mime                  Mime type of the attachment (e.g. image/jpeg or application/zip).
 *     @type int    $modified              Last modified, timestamp in milliseconds.
 *     @type string $name                  Name, same as title of the attachment.
 *     @type array  $nonces                Nonces for update, delete and edit.
 *     @type string $orientation           If the attachment is an image, represents the image orientation
 *                                         (landscape or portrait).
 *     @type array  $sizes                 If the attachment is an image, contains an array of arrays
 *                                         for the images sizes: thumbnail, medium, large, and full.
 *     @type string $status                Post status of the attachment (usually 'inherit').
 *     @type string $subtype               Mime subtype of the attachment (usually the last part, e.g. jpeg or zip).
 *     @type string $title                 Title of the attachment (usually slugified file name without the extension).
 *     @type string $type                  Type of the attachment (usually first part of the mime type, e.g. image).
 *     @type int    $uploadedTo            Parent post to which the attachment was uploaded.
 *     @type string $uploadedToLink        URL to the edit page of the parent post of the attachment.
 *     @type string $uploadedToTitle       Post title of the parent of the attachment.
 *     @type string $url                   Direct URL to the attachment file (from wp-content).
 *     @type int    $width                 If the attachment is an image, represents the width of the image in pixels.
 * }
 */
function wp_prepare_attachment_for_js( $attachment ) {
	$attachment = get_post( $attachment );

if ( ! $attachment ) {
		return;
	}

if ( 'attachment' !== $attachment->post_type ) {
		return;
	}

$meta = wp_get_attachment_metadata( $attachment->ID );
	if ( str_contains( $attachment->post_mime_type, '/' ) ) {
		list( $type, $subtype ) = explode( '/', $attachment->post_mime_type );
	} else {
		list( $type, $subtype ) = array( $attachment->post_mime_type, '' );
	}

$attachment_url = wp_get_attachment_url( $attachment->ID );
	$base_url       = str_replace( wp_basename( $attachment_url ), '', $attachment_url );

$response = array(
		'id'            => $attachment->ID,
		'title'         => $attachment->post_title,
		'filename'      => wp_basename( get_attached_file( $attachment->ID ) ),
		'url'           => $attachment_url,
		'link'          => get_attachment_link( $attachment->ID ),
		'alt'           => get_post_meta( $attachment->ID, '_wp_attachment_image_alt', true ),
		'author'        => $attachment->post_author,
		'description'   => $attachment->post_content,
		'caption'       => $attachment->post_excerpt,
		'name'          => $attachment->post_name,
		'status'        => $attachment->post_status,
		'uploadedTo'    => $attachment->post_parent,
		'date'          => strtotime( $attachment->post_date_gmt ) * 1000,
		'modified'      => strtotime( $attachment->post_modified_gmt ) * 1000,
		'menuOrder'     => $attachment->menu_order,
		'mime'          => $attachment->post_mime_type,
		'type'          => $type,
		'subtype'       => $subtype,
		'icon'          => wp_mime_type_icon( $attachment->ID, '.svg' ),
		'dateFormatted' => mysql2date( __( 'F j, Y' ), $attachment->post_date ),
		'nonces'        => array(
			'update' => false,
			'delete' => false,
			'edit'   => false,
		),
		'editLink'      => false,
		'meta'          => false,
	);

$author = new WP_User( $attachment->post_author );

if ( $author->exists() ) {
		$author_name            = $author->display_name ? $author->display_name : $author->nickname;
		$response['authorName'] = html_entity_decode( $author_name, ENT_QUOTES, get_bloginfo( 'charset' ) );
		$response['authorLink'] = get_edit_user_link( $author->ID );
	} else {
		$response['authorName'] = __( '(no author)' );
	}

if ( $attachment->post_parent ) {
		$post_parent = get_post( $attachment->post_parent );
		if ( $post_parent ) {
			$response['uploadedToTitle'] = $post_parent->post_title ? $post_parent->post_title : __( '(no title)' );
			$response['uploadedToLink']  = get_edit_post_link( $attachment->post_parent, 'raw' );
		}
	}

$attached_file = get_attached_file( $attachment->ID );

if ( isset( $meta['filesize'] ) ) {
		$bytes = $meta['filesize'];
	} elseif ( file_exists( $attached_file ) ) {
		$bytes = wp_filesize( $attached_file );
	} else {
		$bytes = '';
	}

if ( $bytes ) {
		$response['filesizeInBytes']       = $bytes;
		$response['filesizeHumanReadable'] = size_format( $bytes );
	}

$context             = get_post_meta( $attachment->ID, '_wp_attachment_context', true );
	$response['context'] = ( $context ) ? $context : '';

if ( current_user_can( 'edit_post', $attachment->ID ) ) {
		$response['nonces']['update'] = wp_create_nonce( 'update-post_' . $attachment->ID );
		$response['nonces']['edit']   = wp_create_nonce( 'image_editor-' . $attachment->ID );
		$response['editLink']         = get_edit_post_link( $attachment->ID, 'raw' );
	}

if ( current_user_can( 'delete_post', $attachment->ID ) ) {
		$response['nonces']['delete'] = wp_create_nonce( 'delete-post_' . $attachment->ID );
	}

if ( $meta && ( 'image' === $type || ! empty( $meta['sizes'] ) ) ) {
		$sizes = array();

/** This filter is documented in wp-admin/includes/media.php */
		$possible_sizes = apply_filters(
			'image_size_names_choose',
			array(
				'thumbnail' => __( 'Thumbnail' ),
				'medium'    => __( 'Medium' ),
				'large'     => __( 'Large' ),
				'full'      => __( 'Full Size' ),
			)
		);
		unset( $possible_sizes['full'] );

/*
		 * Loop through all potential sizes that may be chosen. Try to do this with some efficiency.
		 * First: run the image_downsize filter. If it returns something, we can use its data.
		 * If the filter does not return something, then image_downsize() is just an expensive way
		 * to check the image metadata, which we do second.
		 */
		foreach ( $possible_sizes as $size => $label ) {

/** This filter is documented in wp-includes/media.php */
			$downsize = apply_filters( 'image_downsize', false, $attachment->ID, $size );

if ( $downsize ) {
				if ( empty( $downsize[3] ) ) {
					continue;
				}

$sizes[ $size ] = array(
					'height'      => $downsize[2],
					'width'       => $downsize[1],
					'url'         => $downsize[0],
					'orientation' => $downsize[2] > $downsize[1] ? 'portrait' : 'landscape',
				);
			} elseif ( isset( $meta['sizes'][ $size ] ) ) {
				// Nothing from the filter, so consult image metadata if we have it.
				$size_meta = $meta['sizes'][ $size ];

/*
				 * We have the actual image size, but might need to further constrain it if content_width is narrower.
				 * Thumbnail, medium, and full sizes are also checked against the site's height/width options.
				 */
				list( $width, $height ) = image_constrain_size_for_editor( $size_meta['width'], $size_meta['height'], $size, 'edit' );

$sizes[ $size ] = array(
					'height'      => $height,
					'width'       => $width,
					'url'         => $base_url . $size_meta['file'],
					'orientation' => $height > $width ? 'portrait' : 'landscape',
				);
			}
		}

if ( 'image' === $type ) {
			if ( ! empty( $meta['original_image'] ) ) {
				$response['originalImageURL']  = wp_get_original_image_url( $attachment->ID );
				$response['originalImageName'] = wp_basename( wp_get_original_image_path( $attachment->ID ) );
			}

$sizes['full'] = array( 'url' => $attachment_url );

if ( isset( $meta['height'], $meta['width'] ) ) {
				$sizes['full']['height']      = $meta['height'];
				$sizes['full']['width']       = $meta['width'];
				$sizes['full']['orientation'] = $meta['height'] > $meta['width'] ? 'portrait' : 'landscape';
			}

$response = array_merge( $response, $sizes['full'] );
		} elseif ( $meta['sizes']['full']['file'] ) {
			$sizes['full'] = array(
				'url'         => $base_url . $meta['sizes']['full']['file'],
				'height'      => $meta['sizes']['full']['height'],
				'width'       => $meta['sizes']['full']['width'],
				'orientation' => $meta['sizes']['full']['height'] > $meta['sizes']['full']['width'] ? 'portrait' : 'landscape',
			);
		}

$response = array_merge( $response, array( 'sizes' => $sizes ) );
	}

if ( $meta && 'video' === $type ) {
		if ( isset( $meta['width'] ) ) {
			$response['width'] = (int) $meta['width'];
		}
		if ( isset( $meta['height'] ) ) {
			$response['height'] = (int) $meta['height'];
		}
	}

if ( $meta && ( 'audio' === $type || 'video' === $type ) ) {
		if ( isset( $meta['length_formatted'] ) ) {
			$response['fileLength']              = $meta['length_formatted'];
			$response['fileLengthHumanReadable'] = human_readable_duration( $meta['length_formatted'] );
		}

$response['meta'] = array();
		foreach ( wp_get_attachment_id3_keys( $attachment, 'js' ) as $key => $label ) {
			$response['meta'][ $key ] = false;

if ( ! empty( $meta[ $key ] ) ) {
				$response['meta'][ $key ] = $meta[ $key ];
			}
		}

$id = get_post_thumbnail_id( $attachment->ID );
		if ( ! empty( $id ) ) {
			list( $src, $width, $height ) = wp_get_attachment_image_src( $id, 'full' );
			$response['image']            = compact( 'src', 'width', 'height' );
			list( $src, $width, $height ) = wp_get_attachment_image_src( $id, 'thumbnail' );
			$response['thumb']            = compact( 'src', 'width', 'height' );
		} else {
			$src               = wp_mime_type_icon( $attachment->ID, '.svg' );
			$width             = 48;
			$height            = 64;
			$response['image'] = compact( 'src', 'width', 'height' );
			$response['thumb'] = compact( 'src', 'width', 'height' );
		}
	}

if ( function_exists( 'get_compat_media_markup' ) ) {
		$response['compat'] = get_compat_media_markup( $attachment->ID, array( 'in_modal' => true ) );
	}

if ( function_exists( 'get_media_states' ) ) {
		$media_states = get_media_states( $attachment );
		if ( ! empty( $media_states ) ) {
			$response['mediaStates'] = implode( ', ', $media_states );
		}
	}

/**
	 * Filters the attachment data prepared for JavaScript.
	 *
	 * @since 3.5.0
	 *
	 * @param array       $response   Array of prepared attachment data. See {@see wp_prepare_attachment_for_js()}.
	 * @param WP_Post     $attachment Attachment object.
	 * @param array|false $meta       Array of attachment meta data, or false if there is none.
	 */
	return apply_filters( 'wp_prepare_attachment_for_js', $response, $attachment, $meta );
}

/**
 * Enqueues all scripts, styles, settings, and templates necessary to use
 * all media JS APIs.
 *
 * @since 3.5.0
 *
 * @global int       $content_width
 * @global wpdb      $wpdb          WordPress database abstraction object.
 * @global WP_Locale $wp_locale     WordPress date and time locale object.
 *
 * @param array $args {
 *     Arguments for enqueuing media scripts.
 *
 *     @type int|WP_Post $post Post ID or post object.
 * }
 */
function wp_enqueue_media( $args = array() ) {
	// Enqueue me just once per page, please.
	if ( did_action( 'wp_enqueue_media' ) ) {
		return;
	}

global $content_width, $wpdb, $wp_locale;

$defaults = array(
		'post' => null,
	);
	$args     = wp_parse_args( $args, $defaults );

/*
	 * We're going to pass the old thickbox media tabs to `media_upload_tabs`
	 * to ensure plugins will work. We will then unset those tabs.
	 */
	$tabs = array(
		// handler action suffix => tab label
		'type'     => '',
		'type_url' => '',
		'gallery'  => '',
		'library'  => '',
	);

/** This filter is documented in wp-admin/includes/media.php */
	$tabs = apply_filters( 'media_upload_tabs', $tabs );
	unset( $tabs['type'], $tabs['type_url'], $tabs['gallery'], $tabs['library'] );

$props = array(
		'link'  => get_option( 'image_default_link_type' ), // DB default is 'file'.
		'align' => get_option( 'image_default_align' ),     // Empty default.
		'size'  => get_option( 'image_default_size' ),      // Empty default.
	);

$exts      = array_merge( wp_get_audio_extensions(), wp_get_video_extensions() );
	$mimes     = get_allowed_mime_types();
	$ext_mimes = array();
	foreach ( $exts as $ext ) {
		foreach ( $mimes as $ext_preg => $mime_match ) {
			if ( preg_match( '#' . $ext . '#i', $ext_preg ) ) {
				$ext_mimes[ $ext ] = $mime_match;
				break;
			}
		}
	}

/**
	 * Allows showing or hiding the "Create Audio Playlist" button in the media library.
	 *
	 * By default, the "Create Audio Playlist" button will always be shown in
	 * the media library.  If this filter returns `null`, a query will be run
	 * to determine whether the media library contains any audio items.  This
	 * was the default behavior prior to version 4.8.0, but this query is
	 * expensive for large media libraries.
	 *
	 * @since 4.7.4
	 * @since 4.8.0 The filter's default value is `true` rather than `null`.
	 *
	 * @link https://core.trac.wordpress.org/ticket/31071
	 *
	 * @param bool|null $show Whether to show the button, or `null` to decide based
	 *                        on whether any audio files exist in the media library.
	 */
	$show_audio_playlist = apply_filters( 'media_library_show_audio_playlist', true );
	if ( null === $show_audio_playlist ) {
		$show_audio_playlist = $wpdb->get_var(
			"SELECT ID
			FROM $wpdb->posts
			WHERE post_type = 'attachment'
			AND post_mime_type LIKE 'audio%'
			LIMIT 1"
		);
	}

/**
	 * Allows showing or hiding the "Create Video Playlist" button in the media library.
	 *
	 * By default, the "Create Video Playlist" button will always be shown in
	 * the media library.  If this filter returns `null`, a query will be run
	 * to determine whether the media library contains any video items.  This
	 * was the default behavior prior to version 4.8.0, but this query is
	 * expensive for large media libraries.
	 *
	 * @since 4.7.4
	 * @since 4.8.0 The filter's default value is `true` rather than `null`.
	 *
	 * @link https://core.trac.wordpress.org/ticket/31071
	 *
	 * @param bool|null $show Whether to show the button, or `null` to decide based
	 *                        on whether any video files exist in the media library.
	 */
	$show_video_playlist = apply_filters( 'media_library_show_video_playlist', true );
	if ( null === $show_video_playlist ) {
		$show_video_playlist = $wpdb->get_var(
			"SELECT ID
			FROM $wpdb->posts
			WHERE post_type = 'attachment'
			AND post_mime_type LIKE 'video%'
			LIMIT 1"
		);
	}

/**
	 * Allows overriding the list of months displayed in the media library.
	 *
	 * By default (if this filter does not return an array), a query will be
	 * run to determine the months that have media items.  This query can be
	 * expensive for large media libraries, so it may be desirable for sites to
	 * override this behavior.
	 *
	 * @since 4.7.4
	 *
	 * @link https://core.trac.wordpress.org/ticket/31071
	 *
	 * @param stdClass[]|null $months An array of objects with `month` and `year`
	 *                                properties, or `null` for default behavior.
	 */
	$months = apply_filters( 'media_library_months_with_files', null );
	if ( ! is_array( $months ) ) {
		$months = $wpdb->get_results(
			$wpdb->prepare(
				"SELECT DISTINCT YEAR( post_date ) AS year, MONTH( post_date ) AS month
				FROM $wpdb->posts
				WHERE post_type = %s
				ORDER BY post_date DESC",
				'attachment'
			)
		);
	}
	foreach ( $months as $month_year ) {
		$month_year->text = sprintf(
			/* translators: 1: Month, 2: Year. */
			__( '%1$s %2$d' ),
			$wp_locale->get_month( $month_year->month ),
			$month_year->year
		);
	}

/**
	 * Filters whether the Media Library grid has infinite scrolling. Default `false`.
	 *
	 * @since 5.8.0
	 *
	 * @param bool $infinite Whether the Media Library grid has infinite scrolling.
	 */
	$infinite_scrolling = apply_filters( 'media_library_infinite_scrolling', false );

$settings = array(
		'tabs'              => $tabs,
		'tabUrl'            => add_query_arg( array( 'chromeless' => true ), admin_url( 'media-upload.php' ) ),
		'mimeTypes'         => wp_list_pluck( get_post_mime_types(), 0 ),
		/** This filter is documented in wp-admin/includes/media.php */
		'captions'          => ! apply_filters( 'disable_captions', '' ),
		'nonce'             => array(
			'sendToEditor'           => wp_create_nonce( 'media-send-to-editor' ),
			'setAttachmentThumbnail' => wp_create_nonce( 'set-attachment-thumbnail' ),
		),
		'post'              => array(
			'id' => 0,
		),
		'defaultProps'      => $props,
		'attachmentCounts'  => array(
			'audio' => ( $show_audio_playlist ) ? 1 : 0,
			'video' => ( $show_video_playlist ) ? 1 : 0,
		),
		'oEmbedProxyUrl'    => rest_url( 'oembed/1.0/proxy' ),
		'embedExts'         => $exts,
		'embedMimes'        => $ext_mimes,
		'contentWidth'      => $content_width,
		'months'            => $months,
		'mediaTrash'        => MEDIA_TRASH ? 1 : 0,
		'infiniteScrolling' => ( $infinite_scrolling ) ? 1 : 0,
	);

$post = null;
	if ( isset( $args['post'] ) ) {
		$post             = get_post( $args['post'] );
		$settings['post'] = array(
			'id'    => $post->ID,
			'nonce' => wp_create_nonce( 'update-post_' . $post->ID ),
		);

$thumbnail_support = current_theme_supports( 'post-thumbnails', $post->post_type ) && post_type_supports( $post->post_type, 'thumbnail' );
		if ( ! $thumbnail_support && 'attachment' === $post->post_type && $post->post_mime_type ) {
			if ( wp_attachment_is( 'audio', $post ) ) {
				$thumbnail_support = post_type_supports( 'attachment:audio', 'thumbnail' ) || current_theme_supports( 'post-thumbnails', 'attachment:audio' );
			} elseif ( wp_attachment_is( 'video', $post ) ) {
				$thumbnail_support = post_type_supports( 'attachment:video', 'thumbnail' ) || current_theme_supports( 'post-thumbnails', 'attachment:video' );
			}
		}

if ( $thumbnail_support ) {
			$featured_image_id                   = get_post_meta( $post->ID, '_thumbnail_id', true );
			$settings['post']['featuredImageId'] = $featured_image_id ? $featured_image_id : -1;
		}
	}

if ( $post ) {
		$post_type_object = get_post_type_object( $post->post_type );
	} else {
		$post_type_object = get_post_type_object( 'post' );
	}

$strings = array(
		// Generic.
		'mediaFrameDefaultTitle'      => __( 'Media' ),
		'url'                         => __( 'URL' ),
		'addMedia'                    => __( 'Add media' ),
		'search'                      => __( 'Search' ),
		'select'                      => __( 'Select' ),
		'cancel'                      => __( 'Cancel' ),
		'update'                      => __( 'Update' ),
		'replace'                     => __( 'Replace' ),
		'remove'                      => __( 'Remove' ),
		'back'                        => __( 'Back' ),
		/*
		 * translators: This is a would-be plural string used in the media manager.
		 * If there is not a word you can use in your language to avoid issues with the
		 * lack of plural support here, turn it into "selected: %d" then translate it.
		 */
		'selected'                    => __( '%d selected' ),
		'dragInfo'                    => __( 'Drag and drop to reorder media files.' ),

// Upload.
		'uploadFilesTitle'            => __( 'Upload files' ),
		'uploadImagesTitle'           => __( 'Upload images' ),

// Library.
		'mediaLibraryTitle'           => __( 'Media Library' ),
		'insertMediaTitle'            => __( 'Add media' ),
		'createNewGallery'            => __( 'Create a new gallery' ),
		'createNewPlaylist'           => __( 'Create a new playlist' ),
		'createNewVideoPlaylist'      => __( 'Create a new video playlist' ),
		'returnToLibrary'             => __( '&#8592; Go to library' ),
		'allMediaItems'               => __( 'All media items' ),
		'allDates'                    => __( 'All dates' ),
		'noItemsFound'                => __( 'No items found.' ),
		'insertIntoPost'              => $post_type_object->labels->insert_into_item,
		'unattached'                  => _x( 'Unattached', 'media items' ),
		'mine'                        => _x( 'Mine', 'media items' ),
		'trash'                       => _x( 'Trash', 'noun' ),
		'uploadedToThisPost'          => $post_type_object->labels->uploaded_to_this_item,
		'warnDelete'                  => __( "You are about to permanently delete this item from your site.\nThis action cannot be undone.\n 'Cancel' to stop, 'OK' to delete." ),
		'warnBulkDelete'              => __( "You are about to permanently delete these items from your site.\nThis action cannot be undone.\n 'Cancel' to stop, 'OK' to delete." ),
		'warnBulkTrash'               => __( "You are about to trash these items.\n  'Cancel' to stop, 'OK' to delete." ),
		'bulkSelect'                  => __( 'Bulk select' ),
		'trashSelected'               => __( 'Move to Trash' ),
		'restoreSelected'             => __( 'Restore from Trash' ),
		'deletePermanently'           => __( 'Delete permanently' ),
		'errorDeleting'               => __( 'Error in deleting the attachment.' ),
		'apply'                       => __( 'Apply' ),
		'filterByDate'                => __( 'Filter by date' ),
		'filterByType'                => __( 'Filter by type' ),
		'searchLabel'                 => __( 'Search media' ),
		'searchMediaLabel'            => __( 'Search media' ),          // Backward compatibility pre-5.3.
		'searchMediaPlaceholder'      => __( 'Search media items...' ), // Placeholder (no ellipsis), backward compatibility pre-5.3.
		/* translators: %d: Number of attachments found in a search. */
		'mediaFound'                  => __( 'Number of media items found: %d' ),
		'noMedia'                     => __( 'No media items found.' ),
		'noMediaTryNewSearch'         => __( 'No media items found. Try a different search.' ),

// Library Details.
		'attachmentDetails'           => __( 'Attachment details' ),

// From URL.
		'insertFromUrlTitle'          => __( 'Insert from URL' ),

// Featured Images.
		'setFeaturedImageTitle'       => $post_type_object->labels->featured_image,
		'setFeaturedImage'            => $post_type_object->labels->set_featured_image,

// Gallery.
		'createGalleryTitle'          => __( 'Create gallery' ),
		'editGalleryTitle'            => __( 'Edit gallery' ),
		'cancelGalleryTitle'          => __( '&#8592; Cancel gallery' ),
		'insertGallery'               => __( 'Insert gallery' ),
		'updateGallery'               => __( 'Update gallery' ),
		'addToGallery'                => __( 'Add to gallery' ),
		'addToGalleryTitle'           => __( 'Add to gallery' ),
		'reverseOrder'                => __( 'Reverse order' ),

// Edit Image.
		'imageDetailsTitle'           => __( 'Image details' ),
		'imageReplaceTitle'           => __( 'Replace image' ),
		'imageDetailsCancel'          => __( 'Cancel edit' ),
		'editImage'                   => __( 'Edit image' ),

// Crop Image.
		'chooseImage'                 => __( 'Choose image' ),
		'selectAndCrop'               => __( 'Select and crop' ),
		'skipCropping'                => __( 'Skip cropping' ),
		'cropImage'                   => __( 'Crop image' ),
		'cropYourImage'               => __( 'Crop your image' ),
		'cropping'                    => __( 'Cropping&hellip;' ),
		/* translators: 1: Suggested width number, 2: Suggested height number. */
		'suggestedDimensions'         => __( 'Suggested image dimensions: %1$s by %2$s pixels.' ),
		'cropError'                   => __( 'There has been an error cropping your image.' ),

// Edit Audio.
		'audioDetailsTitle'           => __( 'Audio details' ),
		'audioReplaceTitle'           => __( 'Replace audio' ),
		'audioAddSourceTitle'         => __( 'Add audio source' ),
		'audioDetailsCancel'          => __( 'Cancel edit' ),

// Edit Video.
		'videoDetailsTitle'           => __( 'Video details' ),
		'videoReplaceTitle'           => __( 'Replace video' ),
		'videoAddSourceTitle'         => __( 'Add video source' ),
		'videoDetailsCancel'          => __( 'Cancel edit' ),
		'videoSelectPosterImageTitle' => __( 'Select poster image' ),
		'videoAddTrackTitle'          => __( 'Add subtitles' ),

// Playlist.
		'playlistDragInfo'            => __( 'Drag and drop to reorder tracks.' ),
		'createPlaylistTitle'         => __( 'Create audio playlist' ),
		'editPlaylistTitle'           => __( 'Edit audio playlist' ),
		'cancelPlaylistTitle'         => __( '&#8592; Cancel audio playlist' ),
		'insertPlaylist'              => __( 'Insert audio playlist' ),
		'updatePlaylist'              => __( 'Update audio playlist' ),
		'addToPlaylist'               => __( 'Add to audio playlist' ),
		'addToPlaylistTitle'          => __( 'Add to Audio Playlist' ),

// Video Playlist.
		'videoPlaylistDragInfo'       => __( 'Drag and drop to reorder videos.' ),
		'createVideoPlaylistTitle'    => __( 'Create video playlist' ),
		'editVideoPlaylistTitle'      => __( 'Edit video playlist' ),
		'cancelVideoPlaylistTitle'    => __( '&#8592; Cancel video playlist' ),
		'insertVideoPlaylist'         => __( 'Insert video playlist' ),
		'updateVideoPlaylist'         => __( 'Update video playlist' ),
		'addToVideoPlaylist'          => __( 'Add to video playlist' ),
		'addToVideoPlaylistTitle'     => __( 'Add to video Playlist' ),

// Headings.
		'filterAttachments'           => __( 'Filter media' ),
		'attachmentsList'             => __( 'Media list' ),
	);

/**
	 * Filters the media view settings.
	 *
	 * @since 3.5.0
	 *
	 * @param array   $settings List of media view settings.
	 * @param WP_Post $post     Post object.
	 */
	$settings = apply_filters( 'media_view_settings', $settings, $post );

/**
	 * Filters the media view strings.
	 *
	 * @since 3.5.0
	 *
	 * @param string[] $strings Array of media view strings keyed by the name they'll be referenced by in JavaScript.
	 * @param WP_Post  $post    Post object.
	 */
	$strings = apply_filters( 'media_view_strings', $strings, $post );

$strings['settings'] = $settings;

/*
	 * Ensure we enqueue media-editor first, that way media-views
	 * is registered internally before we try to localize it. See #24724.
	 */
	wp_enqueue_script( 'media-editor' );
	wp_localize_script( 'media-views', '_wpMediaViewsL10n', $strings );

wp_enqueue_script( 'media-audiovideo' );
	wp_enqueue_style( 'media-views' );
	if ( is_admin() ) {
		wp_enqueue_script( 'mce-view' );
		wp_enqueue_script( 'image-edit' );
	}
	wp_enqueue_style( 'imgareaselect' );
	wp_plupload_default_settings();

require_once ABSPATH . WPINC . '/media-template.php';
	add_action( 'admin_footer', 'wp_print_media_templates' );
	add_action( 'wp_footer', 'wp_print_media_templates' );
	add_action( 'customize_controls_print_footer_scripts', 'wp_print_media_templates' );

/**
	 * Fires at the conclusion of wp_enqueue_media().
	 *
	 * @since 3.5.0
	 */
	do_action( 'wp_enqueue_media' );
}

/**
 * Retrieves media attached to the passed post.
 *
 * @since 3.6.0
 *
 * @param string      $type Mime type.
 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post.
 * @return WP_Post[] Array of media attached to the given post.
 */
function get_attached_media( $type, $post = 0 ) {
	$post = get_post( $post );

if ( ! $post ) {
		return array();
	}

$args = array(
		'post_parent'    => $post->ID,
		'post_type'      => 'attachment',
		'post_mime_type' => $type,
		'posts_per_page' => -1,
		'orderby'        => 'menu_order',
		'order'          => 'ASC',
	);

/**
	 * Filters arguments used to retrieve media attached to the given post.
	 *
	 * @since 3.6.0
	 *
	 * @param array   $args Post query arguments.
	 * @param string  $type Mime type of the desired media.
	 * @param WP_Post $post Post object.
	 */
	$args = apply_filters( 'get_attached_media_args', $args, $type, $post );

$children = get_children( $args );

/**
	 * Filters the list of media attached to the given post.
	 *
	 * @since 3.6.0
	 *
	 * @param WP_Post[] $children Array of media attached to the given post.
	 * @param string    $type     Mime type of the media desired.
	 * @param WP_Post   $post     Post object.
	 */
	return (array) apply_filters( 'get_attached_media', $children, $type, $post );
}

/**
 * Checks the HTML content for an audio, video, object, embed, or iframe tags.
 *
 * @since 3.6.0
 *
 * @param string   $content A string of HTML which might contain media elements.
 * @param string[] $types   An array of media types: 'audio', 'video', 'object', 'embed', or 'iframe'.
 * @return string[] Array of found HTML media elements.
 */
function get_media_embedded_in_content( $content, $types = null ) {
	$html = array();

/**
	 * Filters the embedded media types that are allowed to be returned from the content blob.
	 *
	 * @since 4.2.0
	 *
	 * @param string[] $allowed_media_types An array of allowed media types. Default media types are
	 *                                      'audio', 'video', 'object', 'embed', and 'iframe'.
	 */
	$allowed_media_types = apply_filters( 'media_embedded_in_content_allowed_types', array( 'audio', 'video', 'object', 'embed', 'iframe' ) );

if ( ! empty( $types ) ) {
		if ( ! is_array( $types ) ) {
			$types = array( $types );
		}

$allowed_media_types = array_intersect( $allowed_media_types, $types );
	}

$tags = implode( '|', $allowed_media_types );

if ( preg_match_all( '#<(?P<tag>' . $tags . ')[^<]*?(?:>[\s\S]*?<\/(?P=tag)>|\s*\/>)#', $content, $matches ) ) {
		foreach ( $matches[0] as $match ) {
			$html[] = $match;
		}
	}

return $html;
}

/**
 * Retrieves galleries from the passed post's content.
 *
 * @since 3.6.0
 *
 * @param int|WP_Post $post Post ID or object.
 * @param bool        $html Optional. Whether to return HTML or data in the array. Default true.
 * @return array A list of arrays, each containing gallery data and srcs parsed
 *               from the expanded shortcode.
 */
function get_post_galleries( $post, $html = true ) {
	$post = get_post( $post );

if ( ! $post ) {
		return array();
	}

if ( ! has_shortcode( $post->post_content, 'gallery' ) && ! has_block( 'gallery', $post->post_content ) ) {
		return array();
	}

$galleries = array();
	if ( preg_match_all( '/' . get_shortcode_regex() . '/s', $post->post_content, $matches, PREG_SET_ORDER ) ) {
		foreach ( $matches as $shortcode ) {
			if ( 'gallery' === $shortcode[2] ) {
				$srcs = array();

$shortcode_attrs = shortcode_parse_atts( $shortcode[3] );

// Specify the post ID of the gallery we're viewing if the shortcode doesn't reference another post already.
				if ( ! isset( $shortcode_attrs['id'] ) ) {
					$shortcode[3] .= ' id="' . (int) $post->ID . '"';
				}

$gallery = do_shortcode_tag( $shortcode );
				if ( $html ) {
					$galleries[] = $gallery;
				} else {
					preg_match_all( '#src=([\'"])(.+?)\1#is', $gallery, $src, PREG_SET_ORDER );
					if ( ! empty( $src ) ) {
						foreach ( $src as $s ) {
							$srcs[] = $s[2];
						}
					}

$galleries[] = array_merge(
						$shortcode_attrs,
						array(
							'src' => array_values( array_unique( $srcs ) ),
						)
					);
				}
			}
		}
	}

if ( has_block( 'gallery', $post->post_content ) ) {
		$post_blocks = parse_blocks( $post->post_content );

while ( $block = array_shift( $post_blocks ) ) {
			$has_inner_blocks = ! empty( $block['innerBlocks'] );

// Skip blocks with no blockName and no innerHTML.
			if ( ! $block['blockName'] ) {
				continue;
			}

// Skip non-Gallery blocks.
			if ( 'core/gallery' !== $block['blockName'] ) {
				// Move inner blocks into the root array before skipping.
				if ( $has_inner_blocks ) {
					array_push( $post_blocks, ...$block['innerBlocks'] );
				}
				continue;
			}

// New Gallery block format as HTML.
			if ( $has_inner_blocks && $html ) {
				$block_html  = wp_list_pluck( $block['innerBlocks'], 'innerHTML' );
				$galleries[] = '<figure>' . implode( ' ', $block_html ) . '</figure>';
				continue;
			}

$srcs = array();

// New Gallery block format as an array.
			if ( $has_inner_blocks ) {
				$attrs = wp_list_pluck( $block['innerBlocks'], 'attrs' );
				$ids   = wp_list_pluck( $attrs, 'id' );

foreach ( $ids as $id ) {
					$url = wp_get_attachment_url( $id );

if ( is_string( $url ) && ! in_array( $url, $srcs, true ) ) {
						$srcs[] = $url;
					}
				}

$galleries[] = array(
					'ids' => implode( ',', $ids ),
					'src' => $srcs,
				);

continue;
			}

// Old Gallery block format as HTML.
			if ( $html ) {
				$galleries[] = $block['innerHTML'];
				continue;
			}

// Old Gallery block format as an array.
			$ids = ! empty( $block['attrs']['ids'] ) ? $block['attrs']['ids'] : array();

// If present, use the image IDs from the JSON blob as canonical.
			if ( ! empty( $ids ) ) {
				foreach ( $ids as $id ) {
					$url = wp_get_attachment_url( $id );

if ( is_string( $url ) && ! in_array( $url, $srcs, true ) ) {
						$srcs[] = $url;
					}
				}

$galleries[] = array(
					'ids' => implode( ',', $ids ),
					'src' => $srcs,
				);

continue;
			}

// Otherwise, extract srcs from the innerHTML.
			preg_match_all( '#src=([\'"])(.+?)\1#is', $block['innerHTML'], $found_srcs, PREG_SET_ORDER );

if ( ! empty( $found_srcs[0] ) ) {
				foreach ( $found_srcs as $src ) {
					if ( isset( $src[2] ) && ! in_array( $src[2], $srcs, true ) ) {
						$srcs[] = $src[2];
					}
				}
			}

$galleries[] = array( 'src' => $srcs );
		}
	}

/**
	 * Filters the list of all found galleries in the given post.
	 *
	 * @since 3.6.0
	 *
	 * @param array   $galleries Associative array of all found post galleries.
	 * @param WP_Post $post      Post object.
	 */
	return apply_filters( 'get_post_galleries', $galleries, $post );
}

/**
 * Checks a specified post's content for gallery and, if present, return the first
 *
 * @since 3.6.0
 *
 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global $post.
 * @param bool        $html Optional. Whether to return HTML or data. Default is true.
 * @return string|array Gallery data and srcs parsed from the expanded shortcode.
 */
function get_post_gallery( $post = 0, $html = true ) {
	$galleries = get_post_galleries( $post, $html );
	$gallery   = reset( $galleries );

/**
	 * Filters the first-found post gallery.
	 *
	 * @since 3.6.0
	 *
	 * @param array       $gallery   The first-found post gallery.
	 * @param int|WP_Post $post      Post ID or object.
	 * @param array       $galleries Associative array of all found post galleries.
	 */
	return apply_filters( 'get_post_gallery', $gallery, $post, $galleries );
}

/**
 * Retrieves the image srcs from galleries from a post's content, if present.
 *
 * @since 3.6.0
 *
 * @see get_post_galleries()
 *
 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global `$post`.
 * @return array A list of lists, each containing image srcs parsed.
 *               from an expanded shortcode
 */
function get_post_galleries_images( $post = 0 ) {
	$galleries = get_post_galleries( $post, false );
	return wp_list_pluck( $galleries, 'src' );
}

/**
 * Checks a post's content for galleries and return the image srcs for the first found gallery.
 *
 * @since 3.6.0
 *
 * @see get_post_gallery()
 *
 * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global `$post`.
 * @return string[] A list of a gallery's image srcs in order.
 */
function get_post_gallery_images( $post = 0 ) {
	$gallery = get_post_gallery( $post, false );
	return empty( $gallery['src'] ) ? array() : $gallery['src'];
}

/**
 * Maybe attempts to generate attachment metadata, if missing.
 *
 * @since 3.9.0
 *
 * @param WP_Post $attachment Attachment object.
 */
function wp_maybe_generate_attachment_metadata( $attachment ) {
	if ( empty( $attachment ) || empty( $attachment->ID ) ) {
		return;
	}

$attachment_id = (int) $attachment->ID;
	$file          = get_attached_file( $attachment_id );
	$meta          = wp_get_attachment_metadata( $attachment_id );

if ( empty( $meta ) && file_exists( $file ) ) {
		$_meta = get_post_meta( $attachment_id );
		$_lock = 'wp_generating_att_' . $attachment_id;

if ( ! array_key_exists( '_wp_attachment_metadata', $_meta ) && ! get_transient( $_lock ) ) {
			set_transient( $_lock, $file );
			wp_update_attachment_metadata( $attachment_id, wp_generate_attachment_metadata( $attachment_id, $file ) );
			delete_transient( $_lock );
		}
	}
}

/**
 * Tries to convert an attachment URL into a post ID.
 *
 * @since 4.0.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param string $url The URL to resolve.
 * @return int The found post ID, or 0 on failure.
 */
function attachment_url_to_postid( $url ) {
	global $wpdb;

/**
	 * Filters the attachment ID to allow short-circuit the function.
	 *
	 * Allows plugins to short-circuit attachment ID lookups. Plugins making
	 * use of this function should return:
	 *
	 * - 0 (integer) to indicate the attachment is not found,
	 * - attachment ID (integer) to indicate the attachment ID found,
	 * - null to indicate WordPress should proceed with the lookup.
	 *
	 * Warning: The post ID may be null or zero, both of which cast to a
	 * boolean false. For information about casting to booleans see the
	 * {@link https://www.php.net/manual/en/language.types.boolean.php PHP documentation}.
	 * Use the === operator for testing the post ID when developing filters using
	 * this hook.
	 *
	 * @since 6.7.0
	 *
	 * @param int|null $post_id The result of the post ID lookup. Null to indicate
	 *                          no lookup has been attempted. Default null.
	 * @param string   $url     The URL being looked up.
	 */
	$post_id = apply_filters( 'pre_attachment_url_to_postid', null, $url );
	if ( null !== $post_id ) {
		return (int) $post_id;
	}

$dir  = wp_get_upload_dir();
	$path = $url;

$site_url   = parse_url( $dir['url'] );
	$image_path = parse_url( $path );

// Force the protocols to match if needed.
	if ( isset( $image_path['scheme'] ) && ( $image_path['scheme'] !== $site_url['scheme'] ) ) {
		$path = str_replace( $image_path['scheme'], $site_url['scheme'], $path );
	}

if ( str_starts_with( $path, $dir['baseurl'] . '/' ) ) {
		$path = substr( $path, strlen( $dir['baseurl'] . '/' ) );
	}

$sql = $wpdb->prepare(
		"SELECT post_id, meta_value FROM $wpdb->postmeta WHERE meta_key = '_wp_attached_file' AND meta_value = %s",
		$path
	);

$results = $wpdb->get_results( $sql );
	$post_id = null;

if ( $results ) {
		// Use the first available result, but prefer a case-sensitive match, if exists.
		$post_id = reset( $results )->post_id;

if ( count( $results ) > 1 ) {
			foreach ( $results as $result ) {
				if ( $path === $result->meta_value ) {
					$post_id = $result->post_id;
					break;
				}
			}
		}
	}

/**
	 * Filters an attachment ID found by URL.
	 *
	 * @since 4.2.0
	 *
	 * @param int|null $post_id The post_id (if any) found by the function.
	 * @param string   $url     The URL being looked up.
	 */
	return (int) apply_filters( 'attachment_url_to_postid', $post_id, $url );
}

/**
 * Returns the URLs for CSS files used in an iframe-sandbox'd TinyMCE media view.
 *
 * @since 4.0.0
 *
 * @return string[] The relevant CSS file URLs.
 */
function wpview_media_sandbox_styles() {
	$version        = 'ver=' . get_bloginfo( 'version' );
	$mediaelement   = includes_url( "js/mediaelement/mediaelementplayer-legacy.min.css?$version" );
	$wpmediaelement = includes_url( "js/mediaelement/wp-mediaelement.css?$version" );

return array( $mediaelement, $wpmediaelement );
}

/**
 * Registers the personal data exporter for media.
 *
 * @param array[] $exporters An array of personal data exporters, keyed by their ID.
 * @return array[] Updated array of personal data exporters.
 */
function wp_register_media_personal_data_exporter( $exporters ) {
	$exporters['wordpress-media'] = array(
		'exporter_friendly_name' => __( 'WordPress Media' ),
		'callback'               => 'wp_media_personal_data_exporter',
	);

return $exporters;
}

/**
 * Finds and exports attachments associated with an email address.
 *
 * @since 4.9.6
 *
 * @param string $email_address The attachment owner email address.
 * @param int    $page          Attachment page number.
 * @return array {
 *     An array of personal data.
 *
 *     @type array[] $data An array of personal data arrays.
 *     @type bool    $done Whether the exporter is finished.
 * }
 */
function wp_media_personal_data_exporter( $email_address, $page = 1 ) {
	// Limit us to 50 attachments at a time to avoid timing out.
	$number = 50;
	$page   = (int) $page;

$data_to_export = array();

$user = get_user_by( 'email', $email_address );
	if ( false === $user ) {
		return array(
			'data' => $data_to_export,
			'done' => true,
		);
	}

$post_query = new WP_Query(
		array(
			'author'         => $user->ID,
			'posts_per_page' => $number,
			'paged'          => $page,
			'post_type'      => 'attachment',
			'post_status'    => 'any',
			'orderby'        => 'ID',
			'order'          => 'ASC',
		)
	);

foreach ( (array) $post_query->posts as $post ) {
		$attachment_url = wp_get_attachment_url( $post->ID );

if ( $attachment_url ) {
			$post_data_to_export = array(
				array(
					'name'  => __( 'URL' ),
					'value' => $attachment_url,
				),
			);

$data_to_export[] = array(
				'group_id'          => 'media',
				'group_label'       => __( 'Media' ),
				'group_description' => __( 'User&#8217;s media data.' ),
				'item_id'           => "post-{$post->ID}",
				'data'              => $post_data_to_export,
			);
		}
	}

$done = $post_query->max_num_pages <= $page;

return array(
		'data' => $data_to_export,
		'done' => $done,
	);
}

/**
 * Adds additional default image sub-sizes.
 *
 * These sizes are meant to enhance the way WordPress displays images on the front-end on larger,
 * high-density devices. They make it possible to generate more suitable `srcset` and `sizes` attributes
 * when the users upload large images.
 *
 * The sizes can be changed or removed by themes and plugins but that is not recommended.
 * The size "names" reflect the image dimensions, so changing the sizes would be quite misleading.
 *
 * @since 5.3.0
 * @access private
 */
function _wp_add_additional_image_sizes() {
	// 2x medium_large size.
	add_image_size( '1536x1536', 1536, 1536 );
	// 2x large size.
	add_image_size( '2048x2048', 2048, 2048 );
}

/**
 * Callback to enable showing of the user error when uploading .heic images.
 *
 * @since 5.5.0
 * @since 6.7.0 The default behavior is to enable heic uploads as long as the server
 *              supports the format. The uploads are converted to JPEG's by default.
 *
 * @param array[] $plupload_settings The settings for Plupload.js.
 * @return array[] Modified settings for Plupload.js.
 */
function wp_show_heic_upload_error( $plupload_settings ) {
	// Check if HEIC images can be edited.
	if ( ! wp_image_editor_supports( array( 'mime_type' => 'image/heic' ) ) ) {
		$plupload_init['heic_upload_error'] = true;
	}
	return $plupload_settings;
}

/**
 * Allows PHP's getimagesize() to be debuggable when necessary.
 *
 * @since 5.7.0
 * @since 5.8.0 Added support for WebP images.
 * @since 6.5.0 Added support for AVIF images.
 *
 * @param string $filename   The file path.
 * @param array  $image_info Optional. Extended image information (passed by reference).
 * @return array|false Array of image information or false on failure.
 */
function wp_getimagesize( $filename, ?array &$image_info = null ) {
	// Don't silence errors when in debug mode, unless running unit tests.
	if ( defined( 'WP_DEBUG' ) && WP_DEBUG && ! defined( 'WP_RUN_CORE_TESTS' ) ) {
		if ( 2 === func_num_args() ) {
			$info = getimagesize( $filename, $image_info );
		} else {
			$info = getimagesize( $filename );
		}
	} else {
		/*
		 * Silencing notice and warning is intentional.
		 *
		 * getimagesize() has a tendency to generate errors, such as
		 * "corrupt JPEG data: 7191 extraneous bytes before marker",
		 * even when it's able to provide image size information.
		 *
		 * See https://core.trac.wordpress.org/ticket/42480
		 */
		if ( 2 === func_num_args() ) {
			$info = @getimagesize( $filename, $image_info );
		} else {
			$info = @getimagesize( $filename );
		}
	}

if (
		! empty( $info ) &&
		// Some PHP versions return 0x0 sizes from `getimagesize` for unrecognized image formats, including AVIFs.
		! ( empty( $info[0] ) && empty( $info[1] ) )
	) {
		return $info;
	}

$image_mime_type = wp_get_image_mime( $filename );

// Not an image?
	if ( false === $image_mime_type ) {
		return false;
	}

/*
	 * For PHP versions that don't support WebP images,
	 * extract the image size info from the file headers.
	 */
	if ( 'image/webp' === $image_mime_type ) {
		$webp_info = wp_get_webp_info( $filename );
		$width     = $webp_info['width'];
		$height    = $webp_info['height'];

// Mimic the native return format.
		if ( $width && $height ) {
			return array(
				$width,
				$height,
				IMAGETYPE_WEBP,
				sprintf(
					'width="%d" height="%d"',
					$width,
					$height
				),
				'mime' => 'image/webp',
			);
		}
	}

// For PHP versions that don't support AVIF images, extract the image size info from the file headers.
	if ( 'image/avif' === $image_mime_type ) {
		$avif_info = wp_get_avif_info( $filename );

$width  = $avif_info['width'];
		$height = $avif_info['height'];

// Mimic the native return format.
		if ( $width && $height ) {
			return array(
				$width,
				$height,
				IMAGETYPE_AVIF,
				sprintf(
					'width="%d" height="%d"',
					$width,
					$height
				),
				'mime' => 'image/avif',
			);
		}
	}

// For PHP versions that don't support HEIC images, extract the size info using Imagick when available.
	if ( wp_is_heic_image_mime_type( $image_mime_type ) ) {
		$editor = wp_get_image_editor( $filename );

if ( is_wp_error( $editor ) ) {
			return false;
		}

// If the editor for HEICs is Imagick, use it to get the image size.
		if ( $editor instanceof WP_Image_Editor_Imagick ) {
			$size = $editor->get_size();
			return array(
				$size['width'],
				$size['height'],
				IMAGETYPE_HEIC,
				sprintf(
					'width="%d" height="%d"',
					$size['width'],
					$size['height']
				),
				'mime' => 'image/heic',
			);
		}
	}

// The image could not be parsed.
	return false;
}

/**
 * Extracts meta information about an AVIF file: width, height, bit depth, and number of channels.
 *
 * @since 6.5.0
 *
 * @param string $filename Path to an AVIF file.
 * @return array {
 *     An array of AVIF image information.
 *
 *     @type int|false $width        Image width on success, false on failure.
 *     @type int|false $height       Image height on success, false on failure.
 *     @type int|false $bit_depth    Image bit depth on success, false on failure.
 *     @type int|false $num_channels Image number of channels on success, false on failure.
 * }
 */
function wp_get_avif_info( $filename ) {
	$results = array(
		'width'        => false,
		'height'       => false,
		'bit_depth'    => false,
		'num_channels' => false,
	);

if ( 'image/avif' !== wp_get_image_mime( $filename ) ) {
		return $results;
	}

// Parse the file using libavifinfo's PHP implementation.
	require_once ABSPATH . WPINC . '/class-avif-info.php';

$handle = fopen( $filename, 'rb' );
	if ( $handle ) {
		$parser  = new Avifinfo\Parser( $handle );
		$success = $parser->parse_ftyp() && $parser->parse_file();
		fclose( $handle );
		if ( $success ) {
			$results = $parser->features->primary_item_features;
		}
	}
	return $results;
}

/**
 * Extracts meta information about a WebP file: width, height, and type.
 *
 * @since 5.8.0
 *
 * @param string $filename Path to a WebP file.
 * @return array {
 *     An array of WebP image information.
 *
 *     @type int|false    $width  Image width on success, false on failure.
 *     @type int|false    $height Image height on success, false on failure.
 *     @type string|false $type   The WebP type: one of 'lossy', 'lossless' or 'animated-alpha'.
 *                                False on failure.
 * }
 */
function wp_get_webp_info( $filename ) {
	$width  = false;
	$height = false;
	$type   = false;

if ( 'image/webp' !== wp_get_image_mime( $filename ) ) {
		return compact( 'width', 'height', 'type' );
	}

$magic = file_get_contents( $filename, false, null, 0, 40 );

if ( false === $magic ) {
		return compact( 'width', 'height', 'type' );
	}

// Make sure we got enough bytes.
	if ( strlen( $magic ) < 40 ) {
		return compact( 'width', 'height', 'type' );
	}

/*
	 * The headers are a little different for each of the three formats.
	 * Header values based on WebP docs, see https://developers.google.com/speed/webp/docs/riff_container.
	 */
	switch ( substr( $magic, 12, 4 ) ) {
		// Lossy WebP.
		case 'VP8 ':
			$parts  = unpack( 'v2', substr( $magic, 26, 4 ) );
			$width  = (int) ( $parts[1] & 0x3FFF );
			$height = (int) ( $parts[2] & 0x3FFF );
			$type   = 'lossy';
			break;
		// Lossless WebP.
		case 'VP8L':
			$parts  = unpack( 'C4', substr( $magic, 21, 4 ) );
			$width  = (int) ( $parts[1] | ( ( $parts[2] & 0x3F ) << 8 ) ) + 1;
			$height = (int) ( ( ( $parts[2] & 0xC0 ) >> 6 ) | ( $parts[3] << 2 ) | ( ( $parts[4] & 0x03 ) << 10 ) ) + 1;
			$type   = 'lossless';
			break;
		// Animated/alpha WebP.
		case 'VP8X':
			// Pad 24-bit int.
			$width = unpack( 'V', substr( $magic, 24, 3 ) . "\x00" );
			$width = (int) ( $width[1] & 0xFFFFFF ) + 1;
			// Pad 24-bit int.
			$height = unpack( 'V', substr( $magic, 27, 3 ) . "\x00" );
			$height = (int) ( $height[1] & 0xFFFFFF ) + 1;
			$type   = 'animated-alpha';
			break;
	}

return compact( 'width', 'height', 'type' );
}

/**
 * Gets loading optimization attributes.
 *
 * This function returns an array of attributes that should be merged into the given attributes array to optimize
 * loading performance. Potential attributes returned by this function are:
 * - `loading` attribute with a value of "lazy"
 * - `fetchpriority` attribute with a value of "high"
 * - `decoding` attribute with a value of "async"
 *
 * If any of these attributes are already present in the given attributes, they will not be modified. Note that no
 * element should have both `loading="lazy"` and `fetchpriority="high"`, so the function will trigger a warning in case
 * both attributes are present with those values.
 *
 * @since 6.3.0
 *
 * @global WP_Query $wp_query WordPress Query object.
 *
 * @param string $tag_name The tag name.
 * @param array  $attr     Array of the attributes for the tag.
 * @param string $context  Context for the element for which the loading optimization attribute is requested.
 * @return array Loading optimization attributes.
 */
function wp_get_loading_optimization_attributes( $tag_name, $attr, $context ) {
	global $wp_query;

/**
	 * Filters whether to short-circuit loading optimization attributes.
	 *
	 * Returning an array from the filter will effectively short-circuit the loading of optimization attributes,
	 * returning that value instead.
	 *
	 * @since 6.4.0
	 *
	 * @param array|false $loading_attrs False by default, or array of loading optimization attributes to short-circuit.
	 * @param string      $tag_name      The tag name.
	 * @param array       $attr          Array of the attributes for the tag.
	 * @param string      $context       Context for the element for which the loading optimization attribute is requested.
	 */
	$loading_attrs = apply_filters( 'pre_wp_get_loading_optimization_attributes', false, $tag_name, $attr, $context );

if ( is_array( $loading_attrs ) ) {
		return $loading_attrs;
	}

$loading_attrs = array();

/*
	 * Skip lazy-loading for the overall block template, as it is handled more granularly.
	 * The skip is also applicable for `fetchpriority`.
	 */
	if ( 'template' === $context ) {
		/** This filter is documented in wp-includes/media.php */
		return apply_filters( 'wp_get_loading_optimization_attributes', $loading_attrs, $tag_name, $attr, $context );
	}

// For now this function only supports images and iframes.
	if ( 'img' !== $tag_name && 'iframe' !== $tag_name ) {
		/** This filter is documented in wp-includes/media.php */
		return apply_filters( 'wp_get_loading_optimization_attributes', $loading_attrs, $tag_name, $attr, $context );
	}

/*
	 * Skip programmatically created images within content blobs as they need to be handled together with the other
	 * images within the post content or widget content.
	 * Without this clause, they would already be considered within their own context which skews the image count and
	 * can result in the first post content image being lazy-loaded or an image further down the page being marked as a
	 * high priority.
	 */
	if (
		'the_content' !== $context && doing_filter( 'the_content' ) ||
		'widget_text_content' !== $context && doing_filter( 'widget_text_content' ) ||
		'widget_block_content' !== $context && doing_filter( 'widget_block_content' )
	) {
		/** This filter is documented in wp-includes/media.php */
		return apply_filters( 'wp_get_loading_optimization_attributes', $loading_attrs, $tag_name, $attr, $context );

}

/*
	 * Add `decoding` with a value of "async" for every image unless it has a
	 * conflicting `decoding` attribute already present.
	 */
	if ( 'img' === $tag_name ) {
		if ( isset( $attr['decoding'] ) ) {
			$loading_attrs['decoding'] = $attr['decoding'];
		} else {
			$loading_attrs['decoding'] = 'async';
		}
	}

// For any resources, width and height must be provided, to avoid layout shifts.
	if ( ! isset( $attr['width'], $attr['height'] ) ) {
		/** This filter is documented in wp-includes/media.php */
		return apply_filters( 'wp_get_loading_optimization_attributes', $loading_attrs, $tag_name, $attr, $context );
	}

/*
	 * The key function logic starts here.
	 */
	$maybe_in_viewport    = null;
	$increase_count       = false;
	$maybe_increase_count = false;

// Logic to handle a `loading` attribute that is already provided.
	if ( isset( $attr['loading'] ) ) {
		/*
		 * Interpret "lazy" as not in viewport. Any other value can be
		 * interpreted as in viewport (realistically only "eager" or `false`
		 * to force-omit the attribute are other potential values).
		 */
		if ( 'lazy' === $attr['loading'] ) {
			$maybe_in_viewport = false;
		} else {
			$maybe_in_viewport = true;
		}
	}

// Logic to handle a `fetchpriority` attribute that is already provided.
	if ( isset( $attr['fetchpriority'] ) && 'high' === $attr['fetchpriority'] ) {
		/*
		 * If the image was already determined to not be in the viewport (e.g.
		 * from an already provided `loading` attribute), trigger a warning.
		 * Otherwise, the value can be interpreted as in viewport, since only
		 * the most important in-viewport image should have `fetchpriority` set
		 * to "high".
		 */
		if ( false === $maybe_in_viewport ) {
			_doing_it_wrong(
				__FUNCTION__,
				__( 'An image should not be lazy-loaded and marked as high priority at the same time.' ),
				'6.3.0'
			);
			/*
			 * Set `fetchpriority` here for backward-compatibility as we should
			 * not override what a developer decided, even though it seems
			 * incorrect.
			 */
			$loading_attrs['fetchpriority'] = 'high';
		} else {
			$maybe_in_viewport = true;
		}
	}

if ( null === $maybe_in_viewport ) {
		$header_enforced_contexts = array(
			'template_part_' . WP_TEMPLATE_PART_AREA_HEADER => true,
			'get_header_image_tag' => true,
		);

/**
		 * Filters the header-specific contexts.
		 *
		 * @since 6.4.0
		 *
		 * @param array $default_header_enforced_contexts Map of contexts for which elements should be considered
		 *                                                in the header of the page, as $context => $enabled
		 *                                                pairs. The $enabled should always be true.
		 */
		$header_enforced_contexts = apply_filters( 'wp_loading_optimization_force_header_contexts', $header_enforced_contexts );

// Consider elements with these header-specific contexts to be in viewport.
		if ( isset( $header_enforced_contexts[ $context ] ) ) {
			$maybe_in_viewport    = true;
			$maybe_increase_count = true;
		} elseif ( ! is_admin() && in_the_loop() && is_main_query() ) {
			/*
			 * Get the content media count, since this is a main query
			 * content element. This is accomplished by "increasing"
			 * the count by zero, as the only way to get the count is
			 * to call this function.
			 * The actual count increase happens further below, based
			 * on the `$increase_count` flag set here.
			 */
			$content_media_count = wp_increase_content_media_count( 0 );
			$increase_count      = true;

// If the count so far is below the threshold, `loading` attribute is omitted.
			if ( $content_media_count < wp_omit_loading_attr_threshold() ) {
				$maybe_in_viewport = true;
			} else {
				$maybe_in_viewport = false;
			}
		} elseif (
			// Only apply for main query but before the loop.
			$wp_query->before_loop && $wp_query->is_main_query()
			/*
			 * Any image before the loop, but after the header has started should not be lazy-loaded,
			 * except when the footer has already started which can happen when the current template
			 * does not include any loop.
			 */
			&& did_action( 'get_header' ) && ! did_action( 'get_footer' )
			) {
			$maybe_in_viewport    = true;
			$maybe_increase_count = true;
		}
	}

/*
	 * If the element is in the viewport (`true`), potentially add
	 * `fetchpriority` with a value of "high". Otherwise, i.e. if the element
	 * is not not in the viewport (`false`) or it is unknown (`null`), add
	 * `loading` with a value of "lazy".
	 */
	if ( $maybe_in_viewport ) {
		$loading_attrs = wp_maybe_add_fetchpriority_high_attr( $loading_attrs, $tag_name, $attr );
	} else {
		// Only add `loading="lazy"` if the feature is enabled.
		if ( wp_lazy_loading_enabled( $tag_name, $context ) ) {
			$loading_attrs['loading'] = 'lazy';
		}
	}

/*
	 * If flag was set based on contextual logic above, increase the content
	 * media count, either unconditionally, or based on whether the image size
	 * is larger than the threshold.
	 */
	if ( $increase_count ) {
		wp_increase_content_media_count();
	} elseif ( $maybe_increase_count ) {
		/** This filter is documented in wp-includes/media.php */
		$wp_min_priority_img_pixels = apply_filters( 'wp_min_priority_img_pixels', 50000 );

if ( $wp_min_priority_img_pixels <= $attr['width'] * $attr['height'] ) {
			wp_increase_content_media_count();
		}
	}

/**
	 * Filters the loading optimization attributes.
	 *
	 * @since 6.4.0
	 *
	 * @param array  $loading_attrs The loading optimization attributes.
	 * @param string $tag_name      The tag name.
	 * @param array  $attr          Array of the attributes for the tag.
	 * @param string $context       Context for the element for which the loading optimization attribute is requested.
	 */
	return apply_filters( 'wp_get_loading_optimization_attributes', $loading_attrs, $tag_name, $attr, $context );
}

/**
 * Gets the threshold for how many of the first content media elements to not lazy-load.
 *
 * This function runs the {@see 'wp_omit_loading_attr_threshold'} filter, which uses a default threshold value of 3.
 * The filter is only run once per page load, unless the `$force` parameter is used.
 *
 * @since 5.9.0
 *
 * @param bool $force Optional. If set to true, the filter will be (re-)applied even if it already has been before.
 *                    Default false.
 * @return int The number of content media elements to not lazy-load.
 */
function wp_omit_loading_attr_threshold( $force = false ) {
	static $omit_threshold;

// This function may be called multiple times. Run the filter only once per page load.
	if ( ! isset( $omit_threshold ) || $force ) {
		/**
		 * Filters the threshold for how many of the first content media elements to not lazy-load.
		 *
		 * For these first content media elements, the `loading` attribute will be omitted. By default, this is the case
		 * for only the very first content media element.
		 *
		 * @since 5.9.0
		 * @since 6.3.0 The default threshold was changed from 1 to 3.
		 *
		 * @param int $omit_threshold The number of media elements where the `loading` attribute will not be added. Default 3.
		 */
		$omit_threshold = apply_filters( 'wp_omit_loading_attr_threshold', 3 );
	}

return $omit_threshold;
}

/**
 * Increases an internal content media count variable.
 *
 * @since 5.9.0
 * @access private
 *
 * @param int $amount Optional. Amount to increase by. Default 1.
 * @return int The latest content media count, after the increase.
 */
function wp_increase_content_media_count( $amount = 1 ) {
	static $content_media_count = 0;

$content_media_count += $amount;

return $content_media_count;
}

/**
 * Determines whether to add `fetchpriority='high'` to loading attributes.
 *
 * @since 6.3.0
 * @access private
 *
 * @param array  $loading_attrs Array of the loading optimization attributes for the element.
 * @param string $tag_name      The tag name.
 * @param array  $attr          Array of the attributes for the element.
 * @return array Updated loading optimization attributes for the element.
 */
function wp_maybe_add_fetchpriority_high_attr( $loading_attrs, $tag_name, $attr ) {
	// For now, adding `fetchpriority="high"` is only supported for images.
	if ( 'img' !== $tag_name ) {
		return $loading_attrs;
	}

if ( isset( $attr['fetchpriority'] ) ) {
		/*
		 * While any `fetchpriority` value could be set in `$loading_attrs`,
		 * for consistency we only do it for `fetchpriority="high"` since that
		 * is the only possible value that WordPress core would apply on its
		 * own.
		 */
		if ( 'high' === $attr['fetchpriority'] ) {
			$loading_attrs['fetchpriority'] = 'high';
			wp_high_priority_element_flag( false );
		}

return $loading_attrs;
	}

// Lazy-loading and `fetchpriority="high"` are mutually exclusive.
	if ( isset( $loading_attrs['loading'] ) && 'lazy' === $loading_attrs['loading'] ) {
		return $loading_attrs;
	}

if ( ! wp_high_priority_element_flag() ) {
		return $loading_attrs;
	}

/**
	 * Filters the minimum square-pixels threshold for an image to be eligible as the high-priority image.
	 *
	 * @since 6.3.0
	 *
	 * @param int $threshold Minimum square-pixels threshold. Default 50000.
	 */
	$wp_min_priority_img_pixels = apply_filters( 'wp_min_priority_img_pixels', 50000 );

if ( $wp_min_priority_img_pixels <= $attr['width'] * $attr['height'] ) {
		$loading_attrs['fetchpriority'] = 'high';
		wp_high_priority_element_flag( false );
	}

return $loading_attrs;
}

/**
 * Accesses a flag that indicates if an element is a possible candidate for `fetchpriority='high'`.
 *
 * @since 6.3.0
 * @access private
 *
 * @param bool $value Optional. Used to change the static variable. Default null.
 * @return bool Returns true if high-priority element was marked already, otherwise false.
 */
function wp_high_priority_element_flag( $value = null ) {
	static $high_priority_element = true;

if ( is_bool( $value ) ) {
		$high_priority_element = $value;
	}

return $high_priority_element;
}

/**
 * Determines the output format for the image editor.
 *
 * @since 6.7.0
 * @access private
 *
 * @param string $filename  Path to the image.
 * @param string $mime_type The source image mime type.
 * @return string[] An array of mime type mappings.
 */
function wp_get_image_editor_output_format( $filename, $mime_type ) {
	$output_format = array(
		'image/heic'          => 'image/jpeg',
		'image/heif'          => 'image/jpeg',
		'image/heic-sequence' => 'image/jpeg',
		'image/heif-sequence' => 'image/jpeg',
	);

/**
	 * Filters the image editor output format mapping.
	 *
	 * Enables filtering the mime type used to save images. By default HEIC/HEIF images
	 * are converted to JPEGs.
	 *
	 * @see WP_Image_Editor::get_output_format()
	 *
	 * @since 5.8.0
	 * @since 6.7.0 The default was changed from an empty array to an array
	 *              containing the HEIC/HEIF images mime types.
	 *
	 * @param string[] $output_format {
	 *     An array of mime type mappings. Maps a source mime type to a new
	 *     destination mime type. By default maps HEIC/HEIF input to JPEG output.
	 *
	 *     @type string ...$0 The new mime type.
	 * }
	 * @param string $filename  Path to the image.
	 * @param string $mime_type The source image mime type.
	 */
	return apply_filters( 'image_editor_output_format', $output_format, $filename, $mime_type );
}

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