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Directive	Local Value
IP Address	162.0.209.101
System	Linux premium169.web-hosting.com 4.18.0-553.50.1.lve.el8.x86_64 #1 SMP Thu Apr 17 19:10:24 UTC 2025 x86_64
User	luxeelil
PHP Version	8.0.30
Software	LiteSpeed
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Edit File : wp-optimize.php \| Size : 66.67 KB
<?php /** Plugin Name: WP-Optimize - Clean, Compress, Cache Plugin URI: https://teamupdraft.com/wp-optimize Description: WP-Optimize makes your site fast and efficient. It cleans the database, compresses images and caches pages. Fast sites attract more traffic and users. Version: 4.2.2 Requires at least: 4.9 Requires PHP: 7.2 Update URI: https://wordpress.org/plugins/wp-optimize/ Author: TeamUpdraft, DavidAnderson Author URI: https://teamupdraft.com Text Domain: wp-optimize Domain Path: /languages License: GPLv2 or later / if (!defined('ABSPATH')) die('No direct access allowed'); // Check to make sure if WP_Optimize is already call and returns. if (!class_exists('WP_Optimize')) : define('WPO_VERSION', '4.2.2'); define('WPO_PLUGIN_URL', plugin_dir_url(__FILE__)); define('WPO_PLUGIN_MAIN_PATH', plugin_dir_path(__FILE__)); define('WPO_PLUGIN_SLUG', plugin_basename(__FILE__)); define('WPO_PREMIUM_NOTIFICATION', false); define('WPO_REQUIRED_PHP_VERSION', '7.2'); define('WPO_REQUIRED_WP_VERSION', '4.9'); if (!defined('WPO_USE_WEBP_CONVERSION')) define('WPO_USE_WEBP_CONVERSION', true); class WP_Optimize { public $premium_version_link = 'https://getwpo.com/buy/'; private $template_directories; protected static $_instance = null; protected $_cache_init_status = null; /* * Class constructor / public function __construct() { spl_autoload_register(array($this, 'loader')); // Checks if premium is installed along with plugins needed. add_action('plugins_loaded', array($this, 'plugins_loaded'), 1); register_activation_hook(__FILE__, array('WPO_Activation', 'actions')); register_deactivation_hook(__FILE__, array('WPO_Deactivation', 'actions')); register_uninstall_hook(__FILE__, array('WPO_Uninstall', 'actions')); if (!is_admin()) { WPO_Page_Optimizer::instance()->initialise(); } $this->load_admin(); add_action('admin_init', array($this, 'admin_init')); add_action('admin_bar_menu', array($this, 'cache_admin_bar'), 100, 1); add_action('init', array($this, 'schedule_plugin_cron_tasks')); add_filter("plugin_action_links_".plugin_basename(__FILE__), array($this, 'plugin_settings_link')); add_action('wpo_cron_event2', array($this, 'cron_action')); add_filter('cron_schedules', array($this, 'cron_schedules')); if (!$this->get_options()->get_option('installed-for', false)) $this->get_options()->update_option('installed-for', time()); if (!self::is_premium()) { add_action('auto_option_settings', array($this->get_options(), 'auto_option_settings')); } add_action('admin_footer-upload.php', array($this, 'add_smush_popup_template')); add_action('admin_enqueue_scripts', array($this, 'admin_enqueue_scripts')); add_action('wp_enqueue_scripts', array($this, 'frontend_enqueue_scripts')); if ($this->get_options()->get_option('404_detector', 0)) { WP_Optimize_Performance::get_instance($this->get_404_detector())->hook_404_handler(); } $this->load_ajax_handler(); WP_Optimize_Heartbeat::get_instance(); // Show update to Premium notice for non-premium multisite. add_action('wpo_additional_options', array($this, 'show_multisite_update_to_premium_notice')); // Action column (show repair button if need). add_filter('wpo_tables_list_additional_column_data', array($this, 'tables_list_additional_column_data'), 15, 2); /* * Add action for display Images > Compress images tab. / add_action('wp_optimize_admin_page_wpo_images_smush', array($this, 'admin_page_wpo_images_smush')); include_once(WPO_PLUGIN_MAIN_PATH.'includes/updraftcentral.php'); include_once(WPO_PLUGIN_MAIN_PATH.'includes/backward-compatibility-functions.php'); register_shutdown_function(array($this, 'log_fatal_errors')); add_action('wpo_admin_before_closing_wrap', array($this, 'load_modal_template'), 20); add_action('upgrader_process_complete', array($this, 'detect_active_plugins_and_themes_updates'), 10, 2); $import_done_hooks = array( 'import_end', // wordpress importer 'pmxi_after_xml_import', // wp all import ); $db_update_hooks = apply_filters('wp_optimize_db_update_hooks', $import_done_hooks); foreach ($db_update_hooks as $hook) { add_action($hook, array($this, 'maybe_schedule_update_record_count_event')); } add_action('wpo_update_record_count_event', array($this->get_db_info(), 'wpo_update_record_count')); } /* * Check if minimum requirements for WP-Optimize is met or not. * * @return bool / public function is_minimum_requirement_met() { global $wp_version; return (version_compare(WPO_REQUIRED_PHP_VERSION, PHP_VERSION, '<=') && version_compare(WPO_REQUIRED_WP_VERSION, $wp_version, '<=')); } /* * Add admin notice about minimum server requirements. / public function add_notice_minimum_requirements_not_met() { add_action('admin_notices', array($this, 'output_minimum_requirements_notice')); } /* * Deactivate the plugin programmatically / public function deactivate_plugin() { if (!function_exists('deactivate_plugins')) { require_once( ABSPATH . 'wp-admin/includes/plugin.php' ); } deactivate_plugins(plugin_basename(__FILE__)); } /* * Die after stating minimum requirements / public function die_minimum_requirement_not_met() { $message = $this->get_minimum_requirements_notice_message(); $message .= ' <a href="'.esc_url(admin_url('plugins.php')).'">'.esc_html__('Back to Plugins.', 'wp-optimize').'</a>'; wp_die(wp_kses_post($message)); } /* * Auto-loads classes. * * @param string $class_name The name of the class. / private function loader($class_name) { $dirs = $this->get_class_directories(); foreach ($dirs as $dir) { $class_file = WPO_PLUGIN_MAIN_PATH . trailingslashit($dir) . 'class-' . str_replace('_', '-', strtolower($class_name)) . '.php'; if (file_exists($class_file)) { require_once($class_file); return; } $interface_file = WPO_PLUGIN_MAIN_PATH . trailingslashit($dir) . 'interface-' . str_replace('_', '-', strtolower($class_name)) . '.php'; if (file_exists($interface_file)) { require_once($interface_file); return; } } // Include PHP Minify - https://github.com/matthiasmullie/minify if (strpos($class_name, 'MatthiasMullie') !== false) { $class_name_parts = explode('\\', $class_name); $class_file = WPO_PLUGIN_MAIN_PATH.'vendor/'.strtolower($class_name_parts[0]).'/'.strtolower(preg_replace('/([a-z])([A-Z])/', '$1-$2', $class_name_parts[1])).'/src/'.implode('/', array_slice($class_name_parts, 2)).'.php'; if (file_exists($class_file)) { require_once($class_file); return; } } if ('Minify_HTML' == $class_name) { require_once WPO_PLUGIN_MAIN_PATH.'vendor/mrclay/minify/lib/Minify/HTML.php'; return; } } /* * Returns an array of class directories * * @return array / private function get_class_directories() { return array( 'cache', 'compatibility', 'includes', 'includes/tables', 'includes/list-tables', 'includes/gravatars', 'minify', 'optimizations', 'webp', ); } /* * Initialize Admin class to load admin UI / private function load_admin() { $this->get_admin_instance(); } /* * Returns Admin class instance * * @return WP_Optimize_Admin / public function get_admin_instance() { return WP_Optimize_Admin::instance(); } /* * Detect when an active plugin or theme is updated, and trigger an action * * @param object $upgrader_object * @param array $options * @return void / public function detect_active_plugins_and_themes_updates($upgrader_object, $options) { if (empty($options) \|\| !isset($options['type'])) return; $should_purge_cache = false; $skin = $upgrader_object->skin; if ('plugin' === $options['type']) { // A plugin is updated using the default update system (upgrader_overwrote_package is used for the upload method) if (property_exists($skin, 'plugin_active') && $skin->plugin_active) { $should_purge_cache = true; } } elseif ('theme' === $options['type']) { $active_theme = get_stylesheet(); $parent_theme = get_template(); // A theme is updated using the upload system if (isset($options['action']) && 'install' === $options['action'] && isset($skin->options['overwrite']) && 'update-theme' === $skin->options['overwrite']) { $updated_theme = $upgrader_object->result['destination_name']; // Check if the theme is in use if ($active_theme == $updated_theme \|\| $parent_theme == $updated_theme) { $should_purge_cache = true; } // A theme is updated using the classic update system } elseif (isset($options['action']) && 'update' === $options['action'] && isset($options['themes']) && is_array($options['themes'])) { // Check if the theme is in use if (in_array($active_theme, $options['themes']) \|\| in_array($parent_theme, $options['themes'])) { $should_purge_cache = true; } } } /* * Action executed when an active theme or plugin was updated / if ($should_purge_cache) do_action('wpo_active_plugin_or_theme_updated'); } /* * Sets a flag to indicate an import action is done, if needed / public function maybe_schedule_update_record_count_event() { if (!wp_next_scheduled('wpo_update_record_count_event')) { wp_schedule_single_event(time() + 60, 'wpo_update_record_count_event'); } } public function admin_page_wpo_images_smush() { $options = Updraft_Smush_Manager()->get_smush_options(); $custom = 90 >= $options['image_quality'] && 65 <= $options['image_quality']; $sites = WP_Optimize()->get_sites(); $compression_server_hint = Updraft_Smush_Manager()->get_compression_server_hint(); $this->include_template('images/smush.php', false, array('smush_options' => $options, 'custom' => $custom, 'sites' => $sites, 'does_server_allows_local_webp_conversion' => $this->does_server_allows_local_webp_conversion(), 'compression_server_hint' => $compression_server_hint)); $this->add_smush_popup_template(); } public static function instance() { if (empty(self::$_instance)) { self::$_instance = new self(); } return self::$_instance; } public function get_optimizer() { return WP_Optimizer::instance(); } /* * Adds 3rd party plugin compatibilities. / public function load_compatibilities() { WPO_Polylang_Compatibility::instance(); WPO_Page_Builder_Compatibility::instance(); WPO_Custom_Permalink_Compatibility::instance(); WPO_TranslatePress_Compatibility::instance(); do_action('wpo_load_compatibilities'); } /* * Get and instantiate WP_Optimize_Minify * * @return WP_Optimize_Minify / public function get_minify() { return WP_Optimize_Minify::instance(); } public function get_options() { return WP_Optimize_Options::instance(); } public function get_notices() { return WP_Optimize_Notices::instance(); } /* * Get and instantiate WP_Optimize_Delay_JS * * @return WP_Optimize_Delay_JS / private function get_delay_js() { return WP_Optimize_Delay_JS::instance(); } /* * Returns instance if WPO_Page_Cache class. * * @return WPO_Page_Cache / public function get_page_cache() { return WPO_Page_Cache::instance(); } /* * Returns instance if WP_Optimize_WebP class. * * @return WP_Optimize_WebP / public function get_webp_instance() { return WP_Optimize_WebP::get_instance(); } /* * Detects if the platform is Kinsta or not * * @return bool Returns true if it is Kinsta platform, otherwise returns false / private function is_kinsta() { return isset($_SERVER['KINSTA_CACHE_ZONE']); } /* * Detects whether the server handles cache. eg. Nginx cache / public function does_server_handles_cache() { return $this->is_kinsta(); } /* * Detects whether the server supports table optimization. * * Some servers prevent table optimization * because InnoDB engine does not optimize table * instead it drops tables and recreate them * which results in elevated disk write operations / public function does_server_allows_table_optimization() { return !$this->is_kinsta(); } /* * Detects whether the server supports local webp conversion tools / private function does_server_allows_local_webp_conversion() { return !$this->is_kinsta(); } /* * Create instance of WP_Optimize_Browser_Cache. * * @return WP_Optimize_Browser_Cache / public function get_browser_cache() { return WP_Optimize_Browser_Cache::instance(); } /* * Returns WP_Optimize_Database_Information instance. * * @return WP_Optimize_Database_Information / public function get_db_info() { return WP_Optimize_Database_Information::instance(); } /* * Returns instance of WP_Optimize_Gzip_Compression. * * @return WP_Optimize_Gzip_Compression / public function get_gzip_compression() { return WP_Optimize_Gzip_Compression::instance(); } /* * Create instance of WP_Optimize_Htaccess. * * @param string $htaccess_file absolute path to htaccess file, by default it use .htaccess in WordPress root directory. * @return WP_Optimize_Htaccess / public static function get_htaccess($htaccess_file = '') { return new WP_Optimize_Htaccess($htaccess_file); } /* * Return instance of Updraft_Logger * * @return Updraft_Logger / public function get_logger() { return Updraft_Logger::instance(); } /* * Check if the current page belongs to WP-Optimize. * * @return bool / public function is_wpo_page() { $current_screen = get_current_screen(); return (bool) preg_match('/wp\-optimize/i', $current_screen->id); } /* * Enqueue scripts and styles on WP-Optimize pages. / public function admin_enqueue_scripts() { $enqueue_version = $this->get_enqueue_version(); $min_or_not = $this->get_min_or_not_string(); $min_or_not_internal = $this->get_min_or_not_internal_string(); // Register or enqueue common scripts wp_register_script('wp-optimize-send-command', WPO_PLUGIN_URL.'js/send-command'.$min_or_not_internal.'.js', array(), $enqueue_version); wp_localize_script('wp-optimize-send-command', 'wp_optimize_send_command_data', array('nonce' => wp_create_nonce('wp-optimize-ajax-nonce'))); wp_register_script('wp-optimize-block-ui', WPO_PLUGIN_URL.'js/blockUI'.$min_or_not_internal.'.js', array('jquery'), $enqueue_version); wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version); // load scripts and styles only on WP-Optimize pages. if (!$this->is_wpo_page()) return; wp_enqueue_script('jquery-serialize-json', WPO_PLUGIN_URL.'js/serialize-json/jquery.serializejson'.$min_or_not.'.js', array('jquery'), $enqueue_version); wp_register_script('updraft-queue-js', WPO_PLUGIN_URL.'js/queue'.$min_or_not_internal.'.js', array(), $enqueue_version); wp_enqueue_script('wp-optimize-modal', WPO_PLUGIN_URL.'js/modal'.$min_or_not_internal.'.js', array('jquery', 'backbone', 'wp-util'), $enqueue_version); wp_enqueue_script('wp-optimize-cache-js', WPO_PLUGIN_URL.'js/cache'.$min_or_not_internal.'.js', array('wp-optimize-send-command', 'smush-js', 'wp-optimize-heartbeat-js', 'wp-optimize-block-ui'), $enqueue_version); wp_enqueue_script('wp-optimize-admin-js', WPO_PLUGIN_URL.'js/wpoadmin'.$min_or_not_internal.'.js', array('jquery', 'updraft-queue-js', 'wp-optimize-send-command', 'smush-js', 'wp-optimize-modal', 'wp-optimize-cache-js', 'wp-optimize-heartbeat-js'), $enqueue_version); wp_enqueue_style('wp-optimize-admin-css', WPO_PLUGIN_URL.'css/wp-optimize-admin'.$min_or_not_internal.'.css', array(), $enqueue_version); // Using tablesorter to help with organising the DB size on Table Information // https://github.com/tofsjonas/sortable/ wp_enqueue_script('sortable-js', WPO_PLUGIN_URL.'js/sortable/sortable'.$min_or_not.'.js', array('wp-optimize-send-command'), $enqueue_version); wp_enqueue_script('sortable-a11y-js', WPO_PLUGIN_URL.'js/sortable/sortable.a11y'.$min_or_not.'.js', array('wp-optimize-send-command'), $enqueue_version); wp_enqueue_style('sortable-css', WPO_PLUGIN_URL.'css/sortable/sortable'.$min_or_not_internal.'.css', array(), $enqueue_version); $js_variables = $this->wpo_js_translations(); $js_variables['loggers_classes_info'] = $this->get_loggers_classes_info(); wp_localize_script('wp-optimize-admin-js', 'wpoptimize', $js_variables); do_action('wpo_premium_scripts_styles', $min_or_not_internal, $min_or_not, $enqueue_version); wp_enqueue_script('wp-optimize-status-report', WPO_PLUGIN_URL.'js/status'.$min_or_not_internal.'.js', array('wp-api-fetch', 'wp-optimize-admin-js'), $enqueue_version); wp_enqueue_script('js-zip', WPO_PLUGIN_URL.'/js/jszip/jszip' . $min_or_not . '.js', array(), $enqueue_version); } /* * Enqueue any required front-end scripts * * @return void / public function frontend_enqueue_scripts() { if (!current_user_can('manage_options') \|\| !is_admin_bar_showing()) return; $enqueue_version = $this->get_enqueue_version(); $min_or_not_internal = WP_Optimize()->get_min_or_not_internal_string(); // Register or enqueue common scripts wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version); } /* * Load Task Manager / public function get_task_manager() { include_once(WPO_PLUGIN_MAIN_PATH.'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-tasks-activation.php'); Updraft_Tasks_Activation::check_updates(); include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-meta.php'); include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-options.php'); include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task.php'); include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-task.php'); include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-manager.php'); return Updraft_Smush_Manager(); } /* * Indicate whether we have an associated instance of WP-Optimize Premium or not. * * @returns Boolean / public static function is_premium() { if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && function_exists('WP_Optimize_Premium')) { $wp_optimize_premium = WP_Optimize_Premium(); if (is_a($wp_optimize_premium, 'WP_Optimize_Premium')) return true; } return false; } /* * Check if script running on Apache web server. $is_apache is set in wp-includes/vars.php. Also returns true if the server uses litespeed. * * @return bool / public function is_apache_server() { global $is_apache; return $is_apache; } /* * Check if script running on IIS web server. * * @return bool / public function is_IIS_server() { global $is_IIS, $is_iis7; return $is_IIS \|\| $is_iis7; } /* * Check if Apache module or modules active. * * @param string\|array $module - single Apache module name or list of Apache module names. * * @return bool\|null - if null, the result was indeterminate / public function is_apache_module_loaded($module) { if (!$this->is_apache_server()) return false; if (!function_exists('apache_get_modules')) return null; $module_loaded = true; if (is_array($module)) { foreach ($module as $single_module) { if (!in_array($single_module, apache_get_modules())) { $module_loaded = false; break; } } } else { $module_loaded = in_array($module, apache_get_modules()); } return $module_loaded; } /* * Checks if this is the premium version and loads it. It also ensures that if the free version is installed then it is disabled with an appropriate error message. / public function plugins_loaded() { if (!$this->is_minimum_requirement_met()) { $this->add_notice_minimum_requirements_not_met(); $this->deactivate_plugin(); WPO_Deactivation::actions(); return; } if ($this->does_server_handles_cache()) { add_filter('wp_optimize_admin_page_wpo_cache_tabs', array($this, 'filter_cache_tabs'), 99, 1); // If newly migrated to server that handles cache, disable wpo cache $cache = $this->get_page_cache(); if ($cache->is_enabled()) { $cache->disable(); } } add_filter('robots_txt', array($this, 'robots_txt'), 99, 1); // Run Premium loader if it exists if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && !class_exists('WP_Optimize_Premium')) { include_once(WPO_PLUGIN_MAIN_PATH.'premium.php'); } // load defaults WP_Optimize()->get_options()->set_default_options(); // Initialize loggers. $this->setup_loggers(); if ($this->is_active('premium') && false !== ($free_plugin = $this->is_active('free'))) { if (!function_exists('deactivate_plugins')) include_once(ABSPATH.'wp-admin/includes/plugin.php'); deactivate_plugins($free_plugin); // If WPO_ADVANCED_CACHE is defined, we empty advanced-cache.php to regenerate later. Otherwise it contains the path to free. if (defined('WPO_ADVANCED_CACHE') && WPO_ADVANCED_CACHE) { $advanced_cache_filename = trailingslashit(WP_CONTENT_DIR) . 'advanced-cache.php'; if (!is_file($advanced_cache_filename) && wp_is_writable(dirname($advanced_cache_filename)) \|\| (is_file($advanced_cache_filename) && wp_is_writable($advanced_cache_filename))) { file_put_contents($advanced_cache_filename, ''); } } // Registers the notice letting the user know it cannot be active if premium is active. add_action('admin_notices', array($this, 'show_admin_notice_premium')); return; } // Loads the task manager $this->get_task_manager(); add_action('init', array($this, 'load_language_file'), 0); // Load 3rd party plugin compatibilities. $this->load_compatibilities(); // Load page cache. $this->get_page_cache(); // We use the init hook to avoid the _load_textdomain_just_in_time warning, // which is triggered because we use translations during cache initialization add_action('init', array($this, 'init_page_cache'), 1); // Include minify $this->get_minify(); // Include delay js $this->get_delay_js(); $this->run_updates(); // We need this here because webp can be unavailable because of server moves // This deletes already converted webp images and original image file when a media is deleted WP_Optimize_WebP_Images::get_instance(); // Include WebP if (WPO_USE_WEBP_CONVERSION) { $this->get_webp_instance(); } // add_filter('updraftcentral_host_plugins', array($this, 'attach_updraftcentral_host')); // if (file_exists(WPO_PLUGIN_MAIN_PATH.'central/factory.php')) include_once(WPO_PLUGIN_MAIN_PATH.'central/factory.php'); } /* * Loads the language file. * * @return void / public function load_language_file() { load_plugin_textdomain('wp-optimize', false, dirname(plugin_basename(__FILE__)) . '/languages'); } /* * Attach this wp-optimize plugin as host of the UpdraftCentral libraries * (e.g. "central" folder) * * @param array $hosts List of plugins having the "central" library integrated into them * * @return array / public function attach_updraftcentral_host($hosts) { $hosts[] = 'wp-optimize'; return $hosts; } /* * Filter cache tabs (when it is Kinsta) * * @param array $tabs An array of tabs * * @return array $tabs An array of tabs / public function filter_cache_tabs($tabs) { unset($tabs['preload']); unset($tabs['advanced']); unset($tabs['gzip']); unset($tabs['settings']); return $tabs; } /* * Check whether one of free/Premium is active (whether it is this instance or not) * * @param String $which - 'free' or 'premium' * * @return String\|Boolean - plugin path (if installed) or false if not / private function is_active($which = 'free') { $active_plugins = $this->get_active_plugins(); foreach ($active_plugins as $file) { if ('wp-optimize.php' == basename($file)) { $plugin_dir = WP_PLUGIN_DIR.'/'.dirname($file); if (('free' == $which && !file_exists($plugin_dir.'/premium.php')) \|\| ('free' != $which && file_exists($plugin_dir.'/premium.php'))) return $file; } } return false; } /* * Gets an array of plugins active on either the current site, or site-wide * * @return Array - a list of plugin paths (relative to the plugin directory) / private function get_active_plugins() { // Gets all active plugins on the current site $active_plugins = (array) get_option('active_plugins', array()); if (is_multisite()) { $network_active_plugins = get_site_option('active_sitewide_plugins'); if (!empty($network_active_plugins)) { $network_active_plugins = array_keys($network_active_plugins); $active_plugins = array_merge($active_plugins, $network_active_plugins); } } return $active_plugins; } /* * This function checks whether a specific plugin is installed, and returns information about it * * @param string $name Specify "Plugin Name" to return details about it. * @return array Returns an array of details such as if installed, the name of the plugin and if it is active. / public function is_installed($name) { // Needed to have the 'get_plugins()' function include_once(ABSPATH.'wp-admin/includes/plugin.php'); // Gets all plugins available $get_plugins = get_plugins(); $active_plugins = $this->get_active_plugins(); $plugin_info = array(); $plugin_info['installed'] = false; $plugin_info['active'] = false; // Loops around each plugin available. foreach ($get_plugins as $key => $value) { // If the plugin name matches that of the specified name, it will gather details. if ($value['Name'] != $name && $value['TextDomain'] != $name) continue; $plugin_info['installed'] = true; $plugin_info['name'] = $key; $plugin_info['version'] = $value['Version']; if (in_array($key, $active_plugins)) { $plugin_info['active'] = true; } break; } return $plugin_info; } /* * This is a notice to show users that premium is installed / public function show_admin_notice_premium() { echo '<div id="wp-optimize-premium-installed-warning" class="error"><p>'.esc_html__('WP-Optimize (Free) has been de-activated, because WP-Optimize Premium is active.', 'wp-optimize').'</p></div>'; if (isset($_GET['activate'])) unset($_GET['activate']); } /* * Show update to Premium notice for non-premium multisite. / public function show_multisite_update_to_premium_notice() { if (!is_multisite() \|\| self::is_premium()) return; echo '<p><a href="'.esc_url($this->premium_version_link).'">'.esc_html__('New feature: WP-Optimize Premium can now optimize all sites within a multisite install, not just the main one.', 'wp-optimize').'</a></p>'; } public function admin_init() { $pagenow = $GLOBALS['pagenow']; $this->register_template_directories(); if (('index.php' == $pagenow && current_user_can('update_plugins')) \|\| ('index.php' == $pagenow && defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) { $options = $this->get_options(); $dismissed_until = $options->get_option('dismiss_dash_notice_until', 0); if (file_exists(WPO_PLUGIN_MAIN_PATH . 'index.html')) { $installed = filemtime(WPO_PLUGIN_MAIN_PATH . 'index.html'); $installed_for = (time() - $installed); } if (($installed && time() > $dismissed_until && $installed_for > (14 86400) && !defined('WP_OPTIMIZE_NOADS_B')) \|\| (defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) { add_action('all_admin_notices', array($this, 'show_admin_notice_upgraded')); } } if ($this->is_wp_smush_installed()) { add_filter('transient_wp-smush-conflict_check', array($this, 'modify_wp_smush_conflict_check'), 9, 1); } if ($this->get_options()->get_option('404_detector', 0)) { WP_Optimize_Performance::get_instance($this->get_404_detector())->init(); } } /** * Checks whether the WP Smush plugin is active or not * * @return bool / private function is_wp_smush_installed() { return is_plugin_active('wp-smushit/wp-smush.php'); } /* * Remove WPO plugin name from WP Smushit transient value * * @return array $active_plugins / public function modify_wp_smush_conflict_check($active_plugins) { // This can be boolean value since it is return value of get_transient if (!is_array($active_plugins)) return $active_plugins; if (false !== ($key = array_search('WP-Optimize - Clean, Compress, Cache', $active_plugins))) { unset($active_plugins[$key]); } return $active_plugins; } /* * Get the install or update notice instance * * @return WP_Optimize_Install_Or_Update_Notice / public function get_install_or_update_notice() { static $instance = null; if (is_a($instance, 'WP_Optimize_Install_Or_Update_Notice')) return $instance; $instance = new WP_Optimize_Install_Or_Update_Notice(); return $instance; } /* * Display an admin notice for an upgraded version. / public function show_admin_notice_upgraded() { $this->include_template('notices/thanks-for-using-main-dash.php', false, array( 'is_premium' => WP_Optimize::is_premium() )); } public function capability_required() { return apply_filters('wp_optimize_capability_required', 'manage_options'); } /* * Returns array of translations used in javascript code. * * @return array / public function wpo_js_translations() { $log_message = __('For more details, please check your logs configured in logging destinations settings.', 'wp-optimize'); return apply_filters('wpo_js_translations', array( 'automatic_backup_before_optimizations' => __('Automatic backup before optimizations', 'wp-optimize'), 'error_unexpected_response' => __('An unexpected response was received.', 'wp-optimize'), 'optimization_complete' => __('Optimization complete', 'wp-optimize'), 'with_warnings' => __('(with warnings - open the browser console for more details)', 'wp-optimize'), 'optimizing_table' => __('Optimizing table:', 'wp-optimize'), 'run_optimizations' => __('Run optimizations', 'wp-optimize'), 'table_optimization_timeout' => 120000, 'add' => __('Add', 'wp-optimize'), 'cancel' => __('Cancel', 'wp-optimize'), 'cancelling' => __('Cancelling...', 'wp-optimize'), 'enable' => __('Enable', 'wp-optimize'), 'disable' => __('Disable', 'wp-optimize'), 'please_select_settings_file' => __('Please, select settings file.', 'wp-optimize'), 'are_you_sure_you_want_to_remove_logging_destination' => __('Are you sure you want to remove this logging destination?', 'wp-optimize'), 'fill_all_settings_fields' => __('Before saving, you need to complete the currently incomplete settings (or remove them).', 'wp-optimize'), // translators: %s is the table name 'table_was_not_repaired' => __('%s was not repaired.', 'wp-optimize') . ' ' . $log_message, // translators: %s is the table name 'table_was_not_deleted' => __('%s was not deleted.', 'wp-optimize') . ' ' . $log_message, // translators: %s is the table name 'table_was_not_converted' => __('%s was not converted to InnoDB.', 'wp-optimize') . ' ' . $log_message, 'please_use_positive_integers' => __('Please use positive integers.', 'wp-optimize'), 'please_use_valid_values' => __('Please use valid values.', 'wp-optimize'), 'update' => __('Update', 'wp-optimize'), 'run_now' => __('Run now', 'wp-optimize'), 'starting_preload' => __('Started preload...', 'wp-optimize'), 'loading_urls' => __('Loading URLs...', 'wp-optimize'), 'current_cache_size' => __('Current cache size:', 'wp-optimize'), 'number_of_files' => __('Number of files:', 'wp-optimize'), 'toggle_info' => __('Show information', 'wp-optimize'), 'delete_file' => __('Delete', 'wp-optimize'), 'deleting' => __('Deleting...', 'wp-optimize'), 'added_to_list' => __('Added to the list', 'wp-optimize'), 'added_notice' => __('The file was added to the list', 'wp-optimize'), 'save_notice' => __('Save the changes', 'wp-optimize'), 'saving' => __('Saving...', 'wp-optimize'), 'clearing_cache' => __('Clearing cache...', 'wp-optimize'), 'creating_cache' => __('Creating cache...', 'wp-optimize'), 'page_refresh' => __('Refreshing the page to reflect changes...', 'wp-optimize'), 'cache_file_not_found' => __('Cache file was not found.', 'wp-optimize'), 'settings_have_been_deleted_successfully' => __('WP-Optimize settings have been deleted successfully.', 'wp-optimize'), 'loading_data' => __('Loading data...', 'wp-optimize'), 'spinner_src' => esc_url(admin_url('images/spinner-2x.gif')), 'logo_src' => esc_url(WPO_PLUGIN_URL.'images/notices/wp_optimize_logo.png'), 'settings_page_url' => is_multisite() ? network_admin_url('admin.php?page=wpo_settings') : admin_url('admin.php?page=wpo_settings'), 'sites' => $this->get_sites(), 'user_always_ignores_table_deletion_warning' => (get_user_meta(get_current_user_id(), 'wpo-ignores-table-deletion-warning', true)) ? true : false, 'user_always_ignores_post_meta_deletion_warning' => (get_user_meta(get_current_user_id(), 'wpo-ignores-post-meta-deletion-warning', true)) ? true : false, 'user_always_ignores_orphaned_relationship_data_deletion_warning' => (get_user_meta(get_current_user_id(), 'wpo-ignores-orphaned-relationship-data-deletion-warning', true)) ? true : false, 'post_meta_tweak_completed' => __('The tweak has been performed.', 'wp-optimize'), 'no_minified_assets' => __('No minified files are present', 'wp-optimize'), 'network_site_url' => network_site_url(), 'export_settings_file_name' => 'wpoptimize-settings-'.sanitize_title(get_bloginfo('name')).'.json', 'import_select_file' => __('You have not yet selected a file to import.', 'wp-optimize'), 'import_invalid_json_file' => __('Error: The chosen file is corrupt.', 'wp-optimize') . ' ' . __('Please choose a valid WP-Optimize export file.', 'wp-optimize'), 'importing' => __('Importing...', 'wp-optimize'), 'importing_data_from' => __('This will import data from:', 'wp-optimize'), 'exported_on' => __('Which was exported on:', 'wp-optimize'), 'continue_import' => __('Do you want to carry out the import?', 'wp-optimize'), 'select_destination' => __('Select destination', 'wp-optimize'), 'show' => __('Show', 'wp-optimize'), 'hide' => __('Hide', 'wp-optimize'), 'please_wait' => __('Please wait a moment...', 'wp-optimize'), 'clipboard_failed' => __('Copy to clipboard failed, please do it manually', 'wp-optimize'), 'clipboard_success' => __('System status has been copied to the clipboard', 'wp-optimize'), 'show_information' => __('Show information', 'wp-optimize'), 'hide_information' => __('Hide information', 'wp-optimize'), 'data_not_available' => __('Not available', 'wp-optimize') )); } /* * Manages the admin bar menu for caching (currently page and minify) / public function cache_admin_bar($wp_admin_bar) { $options = $this->get_options(); if (!$options->get_option('enable_cache_in_admin_bar', true)) return; /* * The "purge cache" menu items * * @param array $menu_items - The menu items, in the format required by $wp_admin_bar->add_menu() * @param object $wp_admin_bar / $menu_items = apply_filters('wpo_cache_admin_bar_menu_items', array(), $wp_admin_bar); if (empty($menu_items) \|\| !is_array($menu_items)) return; $wp_admin_bar->add_menu(array( 'id' => 'wpo_purge_cache', 'title' => __('Purge cache', 'wp-optimize'), 'href' => '#', 'meta' => array( 'title' => __('Purge cache', 'wp-optimize'), ), 'parent' => false, )); foreach ($menu_items as $item) { $wp_admin_bar->add_menu($item); } } /* * Add settings link on plugin page * * @param string $links Passing through the URL to be used within the HREF. * @return string Returns the Links. / public function plugin_settings_link($links) { $admin_page_url = $this->get_options()->admin_page_url(); $settings_page_url = $this->get_options()->admin_page_url('wpo_settings'); if (false == self::is_premium()) { $premium_link = '<a href="' . esc_url($this->premium_version_link) . '" target="_blank">' . __('Premium', 'wp-optimize') . '</a>'; array_unshift($links, $premium_link); } $settings_link = '<a href="' . esc_url($settings_page_url) . '">' . __('Settings', 'wp-optimize') . '</a>'; array_unshift($links, $settings_link); $optimize_link = '<a href="' . esc_url($admin_page_url) . '">' . __('Optimize', 'wp-optimize') . '</a>'; array_unshift($links, $optimize_link); return $links; } /* * Action wpo_tables_list_additional_column_data. Output button Optimize in the action column. * * @param string $content String for output to column * @param object $table_info Object with table info. * * @return string / public function tables_list_additional_column_data($content, $table_info) { if ($table_info->is_needing_repair) { $content .= '<div class="wpo_button_wrap">' . '<button class="button button-secondary run-single-table-repair" data-table="' . esc_attr($table_info->Name) . '">' . __('Repair', 'wp-optimize') . '</button>' . '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">' // phpcs:ignore PluginCheck.CodeAnalysis.ImageFunctions.NonEnqueuedImage -- N/A . '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>' . '</div>'; } // table belongs to plugin. if ($table_info->can_be_removed) { $content .= '<div>' . '<button class="button button-secondary run-single-table-delete" data-table="' . esc_attr($table_info->Name) . '">' . __('Remove', 'wp-optimize') . '</button>' . '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">' // phpcs:ignore PluginCheck.CodeAnalysis.ImageFunctions.NonEnqueuedImage -- N/A . '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>' . '</div>'; } // Add option for MyISAM to InnoDB conversion. if ('MyISAM' == $table_info->Engine) { $content .= '<div class="wpo_button_convert wpo_button_wrap">' . '<button class="button button-secondary toinnodb" data-table="' . esc_attr($table_info->Name) . '">' . __('Convert to InnoDB', 'wp-optimize') . '</button>' . '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">' // phpcs:ignore PluginCheck.CodeAnalysis.ImageFunctions.NonEnqueuedImage -- N/A . '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>' . '</div>'; } return $content; } /* * Initialize WP-Optimize page cache. / public function init_page_cache() { if ($this->get_page_cache()->config->get_option('enable_page_caching', false)) { if ((!(defined('WP_CLI') && WP_CLI)) && (!defined('DOING_AJAX') \|\| !DOING_AJAX)) { $this->_cache_init_status = $this->get_page_cache()->enable(); } } } /* * Get init_page_cache() status. * * @return bool / public function get_init_page_cache_status() { return $this->_cache_init_status; } /* * Schedules cron event based on selected schedule type * * @return void / public function cron_activate() { $gmt_offset = (int) (3600 get_option('gmt_offset')); $options = $this->get_options(); if ($options->get_option('schedule') === false) { $options->set_default_options(); } else { if ('true' == $options->get_option('schedule')) { if (!wp_next_scheduled('wpo_cron_event2')) { $schedule_type = $options->get_option('schedule-type', 'wpo_weekly'); // Backward compatibility if ('wpo_otherweekly' == $schedule_type) $schedule_type = 'wpo_fortnightly'; $this_time = (86400 * 7); switch ($schedule_type) { case "wpo_daily": $this_time = 86400; break; case "wpo_weekly": $this_time = (86400 * 7); break; case "wpo_fortnightly": $this_time = (86400 * 14); break; case "wpo_monthly": $this_time = (86400 * 30); break; } add_action('wpo_cron_event2', array($this, 'cron_action')); $result = wp_schedule_event((current_time("timestamp", 0) + $this_time - $gmt_offset), $schedule_type, 'wpo_cron_event2'); WP_Optimize()->log('running wp_schedule_event()'); if (is_wp_error($result)) { $error_msg = $result->get_error_message(); WP_Optimize()->log($error_msg); WP_Optimize()->log(print_r($result, true)); } else { WP_Optimize()->log($result); } } } } } /** * Clears all cron events * * @return void / public function wpo_cron_deactivate() { $cron_jobs = _get_cron_array(); foreach ($cron_jobs as $job) { foreach (array_keys($job) as $hook) { if (preg_match('/^wpo_/', $hook)) wp_unschedule_hook($hook); } } } /* * Scheduler public functions to update schedulers * * @param array $schedules An array of schedules being passed. * @return array An array of schedules being returned. / public function cron_schedules($schedules) { $schedules['wpo_daily'] = array('interval' => 86400, 'display' => 'Once Daily'); $schedules['wpo_weekly'] = array('interval' => 86400 7, 'display' => 'Once Weekly'); $schedules['wpo_fortnightly'] = array('interval' => 86400 * 14, 'display' => 'Once Every Fortnight'); $schedules['wpo_monthly'] = array('interval' => 86400 * 30, 'display' => 'Once Every Month'); return $schedules; } /** * Returns count of overdue cron jobs. * * @return integer / public function howmany_overdue_crons() { $how_many_overdue = 0; if (function_exists('_get_cron_array') \|\| (is_file(ABSPATH.WPINC.'/cron.php') && include_once(ABSPATH.WPINC.'/cron.php') && function_exists('_get_cron_array'))) { $crons = _get_cron_array(); if (is_array($crons)) { $timenow = time(); foreach ($crons as $jt => $job) { if ($jt < $timenow) { $how_many_overdue++; } } } } return $how_many_overdue; } /* * Run updates on plugin activation. / public function run_updates() { include_once(WPO_PLUGIN_MAIN_PATH.'includes/class-wp-optimize-updates.php'); WP_Optimize_Updates::check_updates(); } /* * Returns warning about overdue crons. * * @param int $howmany count of overdue crons * @return string / public function show_admin_warning_overdue_crons($howmany) { $ret = '<div class="updated below-h2"><p>'; // translators: %d is number of overdue cron jobs $ret .= '<strong>'.esc_html__('Warning', 'wp-optimize').':</strong> '.sprintf(esc_html__('WordPress has a number (%d) of scheduled tasks which are overdue.', 'wp-optimize'), $howmany).' '. esc_html__('Unless this is a development site, this probably means that the scheduler in your WordPress install is not working.', 'wp-optimize').' <a target="_blank" href="'.esc_url(apply_filters('wpoptimize_com_link', "https://getwpo.com/faqs/the-scheduler-in-my-wordpress-installation-is-not-working-what-should-i-do/")).'">'.esc_html__('Read this page for a guide to possible causes and how to fix it.', 'wp-optimize').'</a>'; $ret .= '</p></div>'; return $ret; } private function wp_normalize_path($path) { // Wp_normalize_path is not present before WP 3.9. if (function_exists('wp_normalize_path')) return wp_normalize_path($path); // Taken from WP 4.6. $path = str_replace('\\', '/', $path); $path = preg_replace('\|(?<=.)/+\|', '/', $path); if (':' === substr($path, 1, 1)) { $path = ucfirst($path); } return $path; } public function get_templates_dir() { return apply_filters('wp_optimize_templates_dir', $this->wp_normalize_path(WPO_PLUGIN_MAIN_PATH.'templates')); } public function get_templates_url() { return apply_filters('wp_optimize_templates_url', WPO_PLUGIN_URL.'templates'); } /* * Return or output view content * * @param String $path - path to template, usually relative to templates/ within the WP-O directory * @param Boolean $return_instead_of_echo - what to do with the results * @param Array $extract_these - key/value pairs for substitution into the scope of the template * * @return String\|Void / public function include_template($path, $return_instead_of_echo = false, $extract_these = array()) { if ($return_instead_of_echo) ob_start(); if (preg_match('#^([^/]+)/(.)$#', $path, $matches)) { $prefix = $matches[1]; $suffix = $matches[2]; if (isset($this->template_directories[$prefix])) { $template_file = $this->template_directories[$prefix].'/'.$suffix; } } if (!isset($template_file)) { $template_file = WPO_PLUGIN_MAIN_PATH.'templates/'.$path; } $template_file = apply_filters('wp_optimize_template', $template_file, $path); do_action('wp_optimize_before_template', $path, $template_file, $return_instead_of_echo, $extract_these); if (!file_exists($template_file)) { error_log("WP Optimize: template not found: ".$template_file); echo esc_html__('Error:', 'wp-optimize').' '.esc_html__('template not found', 'wp-optimize')." (".esc_html($path).")"; } else { extract($extract_these); // The following are useful variables which can be used in the template. // They appear as unused, but may be used in the $template_file. $wpdb = $GLOBALS['wpdb'];// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wpdb might be used in the included template $wp_optimize = $this;// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize might be used in the included template $optimizer = $this->get_optimizer();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $optimizer might be used in the included template $options = $this->get_options();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $options might be used in the included template $wp_optimize_notices = $this->get_notices();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize_notices might be used in the included template include $template_file; } do_action('wp_optimize_after_template', $path, $template_file, $return_instead_of_echo, $extract_these); if ($return_instead_of_echo) return ob_get_clean(); } /** * Build a list of template directories (stored in self::$template_directories) / private function register_template_directories() { $template_directories = array(); $templates_dir = $this->get_templates_dir(); if ($dh = opendir($templates_dir)) { while (($file = readdir($dh)) !== false) { if ('.' == $file \|\| '..' == $file) continue; if (is_dir($templates_dir.'/'.$file)) { $template_directories[$file] = $templates_dir.'/'.$file; } } closedir($dh); } // Optimal hook for most extensions to hook into. $this->template_directories = apply_filters('wp_optimize_template_directories', $template_directories); } /* * Message to debug * * @param string $message Message to insert into the log. * @param array $context array with variables used in $message like in template, * for ex. * $message = 'Hello {message}'; * $context = ['message' => 'world'] * 'Hello world' string will be saved in log. / public function log($message, $context = array()) { $this->get_logger()->debug($message, $context); } /* * Format Bytes Into KB/MB * * @param mixed $bytes Number of bytes to be converted. * @param integer $decimals the number of decimal digits * @return integer return the correct format size. / public function format_size($bytes, $decimals = 2) { if (!is_numeric($bytes)) return __('N/A', 'wp-optimize'); if (1073741824 <= $bytes) { $bytes = number_format($bytes / 1073741824, $decimals) . ' GB'; } elseif (1048576 <= $bytes) { $bytes = number_format($bytes / 1048576, $decimals) . ' MB'; } elseif (1024 <= $bytes) { $bytes = number_format($bytes / 1024, $decimals) . ' KB'; } elseif (1 < $bytes) { $bytes = $bytes . ' bytes'; } elseif (1 == $bytes) { $bytes = $bytes . ' byte'; } else { $bytes = '0 bytes'; } return $bytes; } /* * Format a timestamp into a juman readable date time * * @param int $timestamp Epoch timestamp to convert * @param string $separator String separator * @return string / public function format_date_time($timestamp, $separator = ' @ ') { return date_i18n(get_option('date_format'). $separator .get_option('time_format'), ($timestamp + get_option('gmt_offset') 3600)); } /** * Executed this function on cron event. * * @return void / public function cron_action() { $optimizer = $this->get_optimizer(); $options = $this->get_options(); $this->log('WPO: Starting cron_action()'); $options->update_option('last-optimized', time()); if ('true' == $options->get_option('schedule')) { $this_options = $options->get_option('auto'); // Currently the output of the optimizations is not saved/used/logged. $optimizer->do_optimizations($this_options, 'auto'); } } /* * Schedule cron tasks used by plugin. * * @return void / public function schedule_plugin_cron_tasks() { if (!wp_next_scheduled('wpo_weekly_cron_tasks')) { wp_schedule_event(current_time("timestamp", 0), 'weekly', 'wpo_weekly_cron_tasks'); } add_action('wpo_weekly_cron_tasks', array($this, 'do_weekly_cron_tasks')); WP_Optimize_404_Detector_Cron::get_instance(); } /* * Do plugin background tasks. * * @return void / public function do_weekly_cron_tasks() { // add tasks here. $this->get_db_info()->update_plugin_json(); } /* * This will customize a URL with a correct Affiliate link * This function can be update to suit any URL as longs as the URL is passed * * @param String $url - URL to be check to see if it an updraftplus match. * @param String $text - Text to be entered within the href a tags. * @param String $html - Any specific HTML to be added. Supplied parameter will not be escaped in this function. Provide escaped, safe HTML * @param String\|Array $attrs - Specify the HTML attributes as an array or string. Use the array format for multiple attributes (e.g., array( "class" => "lorem-ipsum", "title" => "Highlighting text" )), and use the string format for a single attribute (e.g., 'class="lorem-ipsum"'). * @param Boolean $return_instead_of_echo - if set, then the result will be returned, not echo-ed. * @return String\|void / public function wp_optimize_url($url, $text = '', $html = '', $attrs = '', $return_instead_of_echo = false) { // Check if the URL is UpdraftPlus. $url = $this->maybe_add_affiliate_params($url); // Return URL - check if there is HTML such as images. // Check if the variable $text is empty (null value included), otherwise assign $html. $content = empty($text) ? $html : esc_html($text); // Check if $attrs is an array to convert the attributes into a string line. $str_attrs = ''; if (is_array($attrs)) { foreach ($attrs as $attr => $value) { $str_attrs .= $attr . '="' . esc_attr($value) . '" '; } } else { // If $attrs is empty, the explode function will only return an empty array. $attrs = explode('=', $attrs); // Check if $attrs in positions 1 and 2 are not empty and exist; otherwise, return an empty string. $str_attrs = !empty($attrs[0]) && !empty($attrs[1]) ? $attrs[0] . '="' . esc_attr(str_replace('"', '', $attrs[1])) . '"' : ''; } // Check if it is necessary to add a target value if the url is external $is_external_url = $this->is_external_url($url); if ($is_external_url) { $str_attrs = preg_replace('/\s+target="_blank"/i', '', $str_attrs); $str_attrs .= ' target="_blank"'; } $result = sprintf( '<a href="%s" %s>%s</a>', esc_url($url), $str_attrs, wp_kses_post($content) ); if ($return_instead_of_echo) return $result; echo wp_kses_post($result); } /* * Check if a URL is external * * @param string $url * @return string / public function is_external_url($url) { if (empty($url)) { return false; } $current_domain = wp_parse_url(home_url(), PHP_URL_HOST); $url = wp_parse_url($url, PHP_URL_HOST); // Compare the domains and return true if they are different return $current_domain !== $url; } /* * Get an URL with an eventual affiliate ID * * @param string $url * @return string / public function maybe_add_affiliate_params($url) { // Check if the URL is UpdraftPlus. if (false !== strpos($url, '//updraftplus.com')) { // Set URL with Affiliate ID. $url = add_query_arg(array('afref' => $this->get_notices()->get_affiliate_id()), $url); // Apply filters. $url = apply_filters('wpoptimize_updraftplus_com_link', $url); } return apply_filters('wpoptimize_maybe_add_affiliate_params', $url); } /* * Setup WPO logger(s) / public function setup_loggers() { $logger = $this->get_logger(); $loggers = $this->wpo_loggers(); if (!empty($loggers)) { foreach ($loggers as $_logger) { $logger->add_logger($_logger); } } add_action('wp_optimize_after_optimizations', array($this, 'after_optimizations_logger_action')); } /* * Run logger actions after all optimizations done / public function after_optimizations_logger_action() { $loggers = $this->get_logger()->get_loggers(); if (!empty($loggers)) { foreach ($loggers as $logger) { if (is_a($logger, 'Updraft_Email_Logger')) { $logger->flush_log(); } } } } /* * Returns list of WPO loggers instances * Apply filter wp_optimize_loggers * * @return array / public function wpo_loggers() { $loggers = array(); $loggers_classes_by_id = array(); $options_keys = array(); $loggers_classes = $this->get_loggers_classes(); foreach ($loggers_classes as $logger_class => $source) { $loggers_classes_by_id[strtolower($logger_class)] = $logger_class; } $options = $this->get_options(); $saved_loggers = $options->get_option('logging'); $logger_additional_options = $options->get_option('logging-additional'); // create loggers classes instances. if (!empty($saved_loggers)) { // check for previous version options format. $keys = array_keys($saved_loggers); // if options stored in old format then reformat it. if (false == is_numeric($keys[0])) { $_saved_loggers = array(); foreach ($saved_loggers as $logger_id => $enabled) { if ($enabled) { $_saved_loggers[] = $logger_id; } } // fill email with admin. if (array_key_exists('updraft_email_logger', $saved_loggers) && $saved_loggers['updraft_email_logger']) { $logger_additional_options['updraft_email_logger'] = array( get_option('admin_email') ); } $saved_loggers = $_saved_loggers; } foreach ($saved_loggers as $i => $logger_id) { if (!array_key_exists($logger_id, $loggers_classes_by_id)) continue; $logger_class = $loggers_classes_by_id[$logger_id]; $logger = new $logger_class(); $logger_options = $logger->get_options_list(); if (!empty($logger_options)) { foreach (array_keys($logger_options) as $option_name) { if (array_key_exists($option_name, $options_keys)) { $options_keys[$option_name]++; } else { $options_keys[$option_name] = 0; } $option_value = isset($logger_additional_options[$option_name][$options_keys[$option_name]]) ? $logger_additional_options[$option_name][$options_keys[$option_name]] : ''; // if options in old format then get correct value. if ('' === $option_value && array_key_exists($logger_id, $logger_additional_options)) { $option_value = array_shift($logger_additional_options[$logger_id]); } $logger->set_option($option_name, $option_value); } } // check if logger is active. $active = (!is_array($logger_additional_options) \|\| (array_key_exists('active', $logger_additional_options) && empty($logger_additional_options['active'][$i]))) ? false : true; if ($active) { $logger->enable(); } else { $logger->disable(); } $loggers[] = $logger; } } $loggers = apply_filters('wp_optimize_loggers', $loggers); return $loggers; } /* * Returns associative array with logger class name in a key and path to class file in a value. * * @return array / public function get_loggers_classes() { $loggers_classes = array( 'Updraft_PHP_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-php-logger.php', 'Updraft_Email_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-email-logger.php', 'Updraft_Ring_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-ring-logger.php' ); $loggers_classes = apply_filters('wp_optimize_loggers_classes', $loggers_classes); if (!empty($loggers_classes)) { foreach ($loggers_classes as $logger_class => $logger_file) { if (!class_exists($logger_class)) { if (is_file($logger_file)) { include_once($logger_file); } } } } return $loggers_classes; } /* * Returns information about all loggers classes. * * @return array / public function get_loggers_classes_info() { $loggers_classes = $this->get_loggers_classes(); $loggers_classes_info = array(); if (!empty($loggers_classes)) { foreach (array_keys($loggers_classes) as $logger_class_name) { if (!class_exists($logger_class_name)) continue; $logger_id = strtolower($logger_class_name); $logger_class = new $logger_class_name(); $loggers_classes_info[$logger_id] = array( 'description' => $logger_class->get_description(), 'available' => $logger_class->is_available(), 'allow_multiple' => $logger_class->is_allow_multiple(), 'options' => $logger_class->get_options_list() ); } } return $loggers_classes_info; } /* * Returns true if optimization works in multisite mode * * @return boolean / public function is_multisite_mode() { return (is_multisite() && self::is_premium()); } /* * Returns true if current user can run optimizations. * * @return bool / public function can_run_optimizations() { // we don't check permissions for cron jobs. if (defined('DOING_CRON') && DOING_CRON) return true; if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_run_optimizations')) return false; return true; } /* * Returns true if current user can manage plugin options. * * @return bool / public function can_manage_options() { if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_manage_settings')) return false; return true; } /* * Returns list of all sites in multisite * * @return array / public function get_sites() { $sites = array(); if (function_exists('get_sites')) { $sites = get_sites(array('network_id' => null, 'deleted' => 0, 'number' => 999999)); } return $sites; } /* * Returns script memory limit in megabytes. * * @param bool $memory_limit * @return int / public function get_memory_limit($memory_limit = false) { // Returns in megabytes if (false == $memory_limit) $memory_limit = ini_get('memory_limit'); $memory_limit = rtrim($memory_limit); return $this->return_bytes($memory_limit); } /* * Returns free memory in bytes. * * @return int / public function get_free_memory() { return $this->get_memory_limit() - memory_get_usage(); } /* * Checks PHP memory_limit and WP_MAX_MEMORY_LIMIT values and return minimal. * * @return int memory limit in bytes. / public function get_script_memory_limit() { $memory_limit = $this->get_memory_limit(); if (defined('WP_MAX_MEMORY_LIMIT')) { $wp_memory_limit = $this->get_memory_limit(WP_MAX_MEMORY_LIMIT); if ($wp_memory_limit > 0 && $wp_memory_limit < $memory_limit) { $memory_limit = $wp_memory_limit; } } return $memory_limit; } /* * Returns max packet size for database. * * @return int\|string / public function get_max_packet_size() { global $wpdb; static $mp = 0; if ($mp > 0) return $mp; $mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet"); // Default to 1MB $mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576; // 32MB if ($mp < 33554432) { $save = $wpdb->show_errors(false); @$wpdb->query("SET GLOBAL max_allowed_packet=33554432");// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- suppress errors from displaying $wpdb->show_errors($save); $mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet"); // Default to 1MB $mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576; } return $mp; } /* * Converts shorthand memory notation value to bytes. * From http://php.net/manual/en/function.ini-get.php * * @param string $val shorthand memory notation value. / public function return_bytes($val) { $val = trim($val); $last = strtolower($val[strlen($val)-1]); $val = (int) $val; switch ($last) { case 'g': $val = 1024; // no break case 'm': $val = 1024; // no break case 'k': $val = 1024; } return $val; } /** * Log fatal errors to defined log destinations. / public function log_fatal_errors() { $last_error = error_get_last(); if (isset($last_error['type']) && E_ERROR === $last_error['type']) { $this->get_logger()->critical($last_error['message']); } } /* * Close browser connection and continue script work. - Taken from UpdraftPlus * * @param array $txt Response to browser; this must be JSON (or if not, alter the Content-Type header handling below) * @return void / public function close_browser_connection($txt = '') { if (!headers_sent()) { // Close browser connection so that it can resume AJAX polling header('Content-Length: '.(empty($txt) ? '0' : 4+strlen($txt))); header('Content-Type: application/json'); header('Connection: close'); header('Content-Encoding: none'); } if (session_id()) session_write_close(); echo "\r\n\r\n"; echo $txt; // phpcs:ignore WordPress.Security.EscapeOutput -- Output is already escaped // These two added - 19-Feb-15 - started being required on local dev machine, for unknown reason (probably some plugin that started an output buffer). $ob_level = ob_get_level(); while ($ob_level > 0) { ob_end_flush(); $ob_level--; } flush(); if (function_exists('fastcgi_finish_request')) fastcgi_finish_request(); if (function_exists('litespeed_finish_request')) litespeed_finish_request(); } /* * Try to change PHP script time limit. / public function change_time_limit() { $time_limit = (defined('WP_OPTIMIZE_SET_TIME_LIMIT') && WP_OPTIMIZE_SET_TIME_LIMIT > 15) ? WP_OPTIMIZE_SET_TIME_LIMIT : 1800; @set_time_limit($time_limit); // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- Try to reduce the chances of PHP self-terminating via reaching max_execution_time. } /* * Does the request come from UDC * * @return boolean / public function is_updraft_central_request() { return defined('UPDRAFTCENTRAL_COMMAND') && UPDRAFTCENTRAL_COMMAND; } /* * Does the data need to be included in this request. Currently only true if the request is made from UpdraftCentral. * * @return boolean / public function template_should_include_data() { /* * Filters whether data should be included in certain templates or not. / return apply_filters('wpo_template_should_include_data', $this->is_updraft_central_request()); } /* * Load the templates for the modal window / public function load_modal_template() { $this->include_template('modal.php'); } /* * Adds compress popup template / public function add_smush_popup_template() { if (current_user_can($this->capability_required())) { $compression_server_hint = Updraft_Smush_Manager()->get_compression_server_hint(); $this->include_template('images/smush-popup.php', false, array('compression_server_hint' => $compression_server_hint)); } } /* * Delete transients and semaphores data from options table. / public function delete_transients_and_semaphores() { global $wpdb; $masks = array( 'updraft_locked_wpo_%', 'updraft_unlocked_wpo_%', 'updraft_last_lock_time_wpo_%', 'updraft_semaphore_wpo_%', 'wpo_locked_%', 'wpo_unlocked_%', 'wpo_last_lock_time_%', 'wpo_semaphore_%', '_transient_timeout_wpo_%', '_transient_wpo_%', 'updraft_lock_wpo_%', 'wpo_last_scheduled_%', ); $where_parts = array(); foreach ($masks as $mask) { $where_parts[] = "(`option_name` LIKE '{$mask}')"; } $where_clause = implode(' OR ', $where_parts); $wpdb->query($wpdb->prepare("DELETE FROM {$wpdb->options} WHERE %s", $where_clause)); } /* * Prevents bots from indexing plugins list / public function robots_txt($output) { $upload_dir = wp_upload_dir(); $path = wp_parse_url($upload_dir['baseurl']); $output .= "\nUser-agent: "; $output .= "\nDisallow: " . str_replace($path['scheme'].'://'.$path['host'], '', $upload_dir['baseurl']) . "/wpo/wpo-plugins-tables-list.json\n"; return $output; } /** * Returns desired enqueue version string * * @return string Enqueue version as string / public function get_enqueue_version() { return (defined('WP_DEBUG') && WP_DEBUG) ? WPO_VERSION.'.'.time() : WPO_VERSION; } /* * Returns script suffix string * * @return string empty or `.min` suffix string / public function get_min_or_not_string() { return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '.min'; } /* * Returns script suffix string with WPO_VERSION * * @return string empty or min suffix with wpo_version string / public function get_min_or_not_internal_string() { return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '-' . str_replace('.', '-', WPO_VERSION) . '.min'; } /* * Instantiate Ajax handling class / private function load_ajax_handler() { WPO_Ajax::get_instance(); } /* * Get instance of WP_Optimize_Table_Management * * @return WP_Optimize_Table_Management / public function get_table_management() { return WP_Optimize_Table_Management::get_instance(); } /* * Get instance of WP_Optimize_404_Detector * * @return WP_Optimize_404_Detector / public function get_404_detector() { return WP_Optimize_404_Detector::get_instance(); } /* * Returns the message used to notify the user that the PHP version or WordPress version doesn't meet the requirements. * * @return string / public function get_minimum_requirements_notice_message() { // translators: %1$s is minimum required PHP version, %2$s is minimum required WordPress version return sprintf(esc_html__('WP-Optimize requires a minimum PHP version of %1$s and WordPress version of %2$s or higher', 'wp-optimize'), esc_html(WPO_REQUIRED_PHP_VERSION), esc_html(WPO_REQUIRED_WP_VERSION)); } /* * Output notice when PHP version or WordPress version is not meet for WP-Optimize. * * @return void / public function output_minimum_requirements_notice() { ?> <div class="notice notice-error is-dismissible"> <p><?php echo $this->get_minimum_requirements_notice_message(); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- Output is already escaped ?></p> </div> <?php } } /* * Unschedule specific tasks: * `wpo_cron_event2` => DB optimizations * `wpo_weekly_cron_tasks` => ex: plugin.json auto update * * @return void */ function wpo_cron_deactivate() { WP_Optimize()->log('running wpo_cron_deactivate()'); wp_clear_scheduled_hook('wpo_cron_event2'); wp_clear_scheduled_hook('wpo_weekly_cron_tasks'); } function WP_Optimize() { return WP_Optimize::instance(); } endif; $GLOBALS['wp_optimize'] = WP_Optimize(); Back

Edit File : wp-optimize.php | Size : 66.67 KB

<?php
/**
Plugin Name: WP-Optimize - Clean, Compress, Cache
Plugin URI: https://teamupdraft.com/wp-optimize
Description: WP-Optimize makes your site fast and efficient. It cleans the database, compresses images and caches pages. Fast sites attract more traffic and users.
Version: 4.2.2
Requires at least: 4.9
Requires PHP: 7.2
Update URI: https://wordpress.org/plugins/wp-optimize/
Author: TeamUpdraft, DavidAnderson
Author URI: https://teamupdraft.com
Text Domain: wp-optimize
Domain Path: /languages
License: GPLv2 or later
 */

if (!defined('ABSPATH')) die('No direct access allowed');

// Check to make sure if WP_Optimize is already call and returns.
if (!class_exists('WP_Optimize')) :
define('WPO_VERSION', '4.2.2');
define('WPO_PLUGIN_URL', plugin_dir_url(__FILE__));
define('WPO_PLUGIN_MAIN_PATH', plugin_dir_path(__FILE__));
define('WPO_PLUGIN_SLUG', plugin_basename(__FILE__));
define('WPO_PREMIUM_NOTIFICATION', false);
define('WPO_REQUIRED_PHP_VERSION', '7.2');
define('WPO_REQUIRED_WP_VERSION', '4.9');
if (!defined('WPO_USE_WEBP_CONVERSION')) define('WPO_USE_WEBP_CONVERSION', true);

class WP_Optimize {

public $premium_version_link = 'https://getwpo.com/buy/';

private $template_directories;

protected static $_instance = null;

protected $_cache_init_status = null;

/**
	 * Class constructor
	 */
	public function __construct() {

spl_autoload_register(array($this, 'loader'));

// Checks if premium is installed along with plugins needed.
		add_action('plugins_loaded', array($this, 'plugins_loaded'), 1);
		
		register_activation_hook(__FILE__, array('WPO_Activation', 'actions'));
		register_deactivation_hook(__FILE__, array('WPO_Deactivation', 'actions'));
		register_uninstall_hook(__FILE__, array('WPO_Uninstall', 'actions'));
		if (!is_admin()) {
			WPO_Page_Optimizer::instance()->initialise();
		}

$this->load_admin();
		add_action('admin_init', array($this, 'admin_init'));
		add_action('admin_bar_menu', array($this, 'cache_admin_bar'), 100, 1);

add_action('init', array($this, 'schedule_plugin_cron_tasks'));

add_filter("plugin_action_links_".plugin_basename(__FILE__), array($this, 'plugin_settings_link'));
		add_action('wpo_cron_event2', array($this, 'cron_action'));
		add_filter('cron_schedules', array($this, 'cron_schedules'));

if (!$this->get_options()->get_option('installed-for', false)) $this->get_options()->update_option('installed-for', time());

if (!self::is_premium()) {
			add_action('auto_option_settings', array($this->get_options(), 'auto_option_settings'));
		}

add_action('admin_footer-upload.php', array($this, 'add_smush_popup_template'));

add_action('admin_enqueue_scripts', array($this, 'admin_enqueue_scripts'));

add_action('wp_enqueue_scripts', array($this, 'frontend_enqueue_scripts'));
		if ($this->get_options()->get_option('404_detector', 0)) {
			WP_Optimize_Performance::get_instance($this->get_404_detector())->hook_404_handler();
		}

$this->load_ajax_handler();
		WP_Optimize_Heartbeat::get_instance();

// Show update to Premium notice for non-premium multisite.
		add_action('wpo_additional_options', array($this, 'show_multisite_update_to_premium_notice'));

// Action column (show repair button if need).
		add_filter('wpo_tables_list_additional_column_data', array($this, 'tables_list_additional_column_data'), 15, 2);

/**
		 * Add action for display Images > Compress images tab.
		 */
		add_action('wp_optimize_admin_page_wpo_images_smush', array($this, 'admin_page_wpo_images_smush'));

include_once(WPO_PLUGIN_MAIN_PATH.'includes/updraftcentral.php');

include_once(WPO_PLUGIN_MAIN_PATH.'includes/backward-compatibility-functions.php');
				
		register_shutdown_function(array($this, 'log_fatal_errors'));

add_action('wpo_admin_before_closing_wrap', array($this, 'load_modal_template'), 20);

add_action('upgrader_process_complete', array($this, 'detect_active_plugins_and_themes_updates'), 10, 2);

$import_done_hooks = array(
			'import_end', // wordpress importer
			'pmxi_after_xml_import', // wp all import
		);

$db_update_hooks = apply_filters('wp_optimize_db_update_hooks', $import_done_hooks);

foreach ($db_update_hooks as $hook) {
			add_action($hook, array($this, 'maybe_schedule_update_record_count_event'));
		}
		add_action('wpo_update_record_count_event', array($this->get_db_info(), 'wpo_update_record_count'));

}

/**
	 * Check if minimum requirements for WP-Optimize is met or not.
	 *
	 * @return bool
	 */
	public function is_minimum_requirement_met() {
		global $wp_version;
		return (version_compare(WPO_REQUIRED_PHP_VERSION, PHP_VERSION, '<=') && version_compare(WPO_REQUIRED_WP_VERSION, $wp_version, '<='));
	}

/**
	 * Add admin notice about minimum server requirements.
	 */
	public function add_notice_minimum_requirements_not_met() {
		add_action('admin_notices', array($this, 'output_minimum_requirements_notice'));
	}

/**
	 * Deactivate the plugin programmatically
	 */
	public function deactivate_plugin() {
		if (!function_exists('deactivate_plugins')) {
			require_once( ABSPATH . 'wp-admin/includes/plugin.php' );
		}
		deactivate_plugins(plugin_basename(__FILE__));
	}

/**
	 * Die after stating minimum requirements
	 */
	public function die_minimum_requirement_not_met() {
		$message = $this->get_minimum_requirements_notice_message();
		$message .= ' <a href="'.esc_url(admin_url('plugins.php')).'">'.esc_html__('Back to Plugins.', 'wp-optimize').'</a>';
		wp_die(wp_kses_post($message));
	}

/**
	 * Auto-loads classes.
	 *
	 * @param string $class_name The name of the class.
	 */
	private function loader($class_name) {
		$dirs = $this->get_class_directories();

foreach ($dirs as $dir) {
			$class_file = WPO_PLUGIN_MAIN_PATH . trailingslashit($dir) . 'class-' . str_replace('_', '-', strtolower($class_name)) . '.php';
			if (file_exists($class_file)) {
				require_once($class_file);
				return;
			}

$interface_file = WPO_PLUGIN_MAIN_PATH . trailingslashit($dir) . 'interface-' . str_replace('_', '-', strtolower($class_name)) . '.php';
			if (file_exists($interface_file)) {
				require_once($interface_file);
				return;
			}
		}

// Include PHP Minify - https://github.com/matthiasmullie/minify
		if (strpos($class_name, 'MatthiasMullie') !== false) {
			$class_name_parts = explode('\\', $class_name);
			$class_file = WPO_PLUGIN_MAIN_PATH.'vendor/'.strtolower($class_name_parts[0]).'/'.strtolower(preg_replace('/([a-z])([A-Z])/', '$1-$2', $class_name_parts[1])).'/src/'.implode('/', array_slice($class_name_parts, 2)).'.php';
			if (file_exists($class_file)) {
				require_once($class_file);
				return;
			}
		}
		
		if ('Minify_HTML' == $class_name) {
			require_once WPO_PLUGIN_MAIN_PATH.'vendor/mrclay/minify/lib/Minify/HTML.php';
			return;
		}
	}

/**
	 * Returns an array of class directories
	 *
	 * @return array
	 */
	private function get_class_directories() {
		return array(
			'cache',
			'compatibility',
			'includes',
			'includes/tables',
			'includes/list-tables',
			'includes/gravatars',
			'minify',
			'optimizations',
			'webp',
		);
	}

/**
	 * Initialize Admin class to load admin UI
	 */
	private function load_admin() {
		$this->get_admin_instance();
	}

/**
	 * Returns Admin class instance
	 *
	 * @return WP_Optimize_Admin
	 */
	public function get_admin_instance() {
		return WP_Optimize_Admin::instance();
	}
	
	/**
	 * Detect when an active plugin or theme is updated, and trigger an action
	 *
	 * @param object $upgrader_object
	 * @param array  $options
	 * @return void
	 */
	public function detect_active_plugins_and_themes_updates($upgrader_object, $options) {
		if (empty($options) || !isset($options['type'])) return;
		
		$should_purge_cache = false;
		$skin = $upgrader_object->skin;
		if ('plugin' === $options['type']) {
			// A plugin is updated using the default update system (upgrader_overwrote_package is used for the upload method)
			if (property_exists($skin, 'plugin_active') && $skin->plugin_active) {
				$should_purge_cache = true;
			}
		} elseif ('theme' === $options['type']) {
			$active_theme = get_stylesheet();
			$parent_theme = get_template();
			// A theme is updated using the upload system
			if (isset($options['action']) && 'install' === $options['action'] && isset($skin->options['overwrite']) && 'update-theme' === $skin->options['overwrite']) {
				$updated_theme = $upgrader_object->result['destination_name'];
				// Check if the theme is in use
				if ($active_theme == $updated_theme || $parent_theme == $updated_theme) {
					$should_purge_cache = true;
				}
			// A theme is updated using the classic update system
			} elseif (isset($options['action']) && 'update' === $options['action'] && isset($options['themes']) && is_array($options['themes'])) {
				// Check if the theme is in use
				if (in_array($active_theme, $options['themes']) || in_array($parent_theme, $options['themes'])) {
					$should_purge_cache = true;
				}
			}
		}

/**
		 * Action executed when an active theme or plugin was updated
		 */
		if ($should_purge_cache) do_action('wpo_active_plugin_or_theme_updated');

}

/**
	 * Sets a flag to indicate an import action is done, if needed
	 */
	public function maybe_schedule_update_record_count_event() {
		if (!wp_next_scheduled('wpo_update_record_count_event')) {
			wp_schedule_single_event(time() + 60, 'wpo_update_record_count_event');
		}
	}
			
	public function admin_page_wpo_images_smush() {
		$options = Updraft_Smush_Manager()->get_smush_options();
		$custom = 90 >= $options['image_quality'] && 65 <= $options['image_quality'];
		$sites = WP_Optimize()->get_sites();
		$compression_server_hint = Updraft_Smush_Manager()->get_compression_server_hint();
		$this->include_template('images/smush.php', false, array('smush_options' => $options, 'custom' => $custom, 'sites' => $sites, 'does_server_allows_local_webp_conversion' => $this->does_server_allows_local_webp_conversion(), 'compression_server_hint' => $compression_server_hint));
		$this->add_smush_popup_template();
	}

public static function instance() {
		if (empty(self::$_instance)) {
			self::$_instance = new self();
		}
		return self::$_instance;
	}

public function get_optimizer() {
		return WP_Optimizer::instance();
	}

/**
	 * Adds 3rd party plugin compatibilities.
	 */
	public function load_compatibilities() {
		WPO_Polylang_Compatibility::instance();
		WPO_Page_Builder_Compatibility::instance();
		WPO_Custom_Permalink_Compatibility::instance();
		WPO_TranslatePress_Compatibility::instance();

do_action('wpo_load_compatibilities');
	}

/**
	 * Get and instantiate WP_Optimize_Minify
	 *
	 * @return WP_Optimize_Minify
	 */
	public function get_minify() {
		return WP_Optimize_Minify::instance();
	}

public function get_options() {
		return WP_Optimize_Options::instance();
	}

public function get_notices() {
		return WP_Optimize_Notices::instance();
	}

/**
	 * Get and instantiate WP_Optimize_Delay_JS
	 *
	 * @return WP_Optimize_Delay_JS
	 */
	private function get_delay_js() {
		return WP_Optimize_Delay_JS::instance();
	}

/**
	 * Returns instance if WPO_Page_Cache class.
	 *
	 * @return WPO_Page_Cache
	 */
	public function get_page_cache() {
		return WPO_Page_Cache::instance();
	}

/**
	 * Returns instance if WP_Optimize_WebP class.
	 *
	 * @return WP_Optimize_WebP
	 */
	public function get_webp_instance() {
		return WP_Optimize_WebP::get_instance();
	}

/**
	 * Detects if the platform is Kinsta or not
	 *
	 * @return bool Returns true if it is Kinsta platform, otherwise returns false
	 */
	private function is_kinsta() {
		return isset($_SERVER['KINSTA_CACHE_ZONE']);
	}

/**
	 * Detects whether the server handles cache. eg. Nginx cache
	 */
	public function does_server_handles_cache() {
		return $this->is_kinsta();
	}

/**
	 * Detects whether the server supports table optimization.
	 *
	 * Some servers prevent table optimization
	 * because InnoDB engine does not optimize table
	 * instead it drops tables and recreate them
	 * which results in elevated disk write operations
	 */
	public function does_server_allows_table_optimization() {
		return !$this->is_kinsta();
	}

/**
	 * Detects whether the server supports local webp conversion tools
	 */
	private function does_server_allows_local_webp_conversion() {
		return !$this->is_kinsta();
	}

/**
	 * Create instance of WP_Optimize_Browser_Cache.
	 *
	 * @return WP_Optimize_Browser_Cache
	 */
	public function get_browser_cache() {
		return WP_Optimize_Browser_Cache::instance();
	}

/**
	 * Returns WP_Optimize_Database_Information instance.
	 *
	 * @return WP_Optimize_Database_Information
	 */
	public function get_db_info() {
		return WP_Optimize_Database_Information::instance();
	}

/**
	 * Returns instance of WP_Optimize_Gzip_Compression.
	 *
	 * @return WP_Optimize_Gzip_Compression
	 */
	public function get_gzip_compression() {
		return WP_Optimize_Gzip_Compression::instance();
	}

/**
	 * Create instance of WP_Optimize_Htaccess.
	 *
	 * @param string $htaccess_file absolute path to htaccess file, by default it use .htaccess in WordPress root directory.
	 * @return WP_Optimize_Htaccess
	 */
	public static function get_htaccess($htaccess_file = '') {
		return new WP_Optimize_Htaccess($htaccess_file);
	}

/**
	 * Return instance of Updraft_Logger
	 *
	 * @return Updraft_Logger
	 */
	public function get_logger() {
		return Updraft_Logger::instance();
	}

/**
	 * Check if the current page belongs to WP-Optimize.
	 *
	 * @return bool
	 */
	public function is_wpo_page() {
		$current_screen = get_current_screen();

return (bool) preg_match('/wp\-optimize/i', $current_screen->id);
	}

/**
	 * Enqueue scripts and styles on WP-Optimize pages.
	 */
	public function admin_enqueue_scripts() {
		$enqueue_version = $this->get_enqueue_version();
		$min_or_not = $this->get_min_or_not_string();
		$min_or_not_internal = $this->get_min_or_not_internal_string();

// Register or enqueue common scripts
		wp_register_script('wp-optimize-send-command', WPO_PLUGIN_URL.'js/send-command'.$min_or_not_internal.'.js', array(), $enqueue_version);
		wp_localize_script('wp-optimize-send-command', 'wp_optimize_send_command_data', array('nonce' => wp_create_nonce('wp-optimize-ajax-nonce')));
		wp_register_script('wp-optimize-block-ui', WPO_PLUGIN_URL.'js/blockUI'.$min_or_not_internal.'.js', array('jquery'), $enqueue_version);
		wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);

// load scripts and styles only on WP-Optimize pages.
		if (!$this->is_wpo_page()) return;
				
		wp_enqueue_script('jquery-serialize-json', WPO_PLUGIN_URL.'js/serialize-json/jquery.serializejson'.$min_or_not.'.js', array('jquery'), $enqueue_version);

wp_register_script('updraft-queue-js', WPO_PLUGIN_URL.'js/queue'.$min_or_not_internal.'.js', array(), $enqueue_version);

wp_enqueue_script('wp-optimize-modal', WPO_PLUGIN_URL.'js/modal'.$min_or_not_internal.'.js', array('jquery', 'backbone', 'wp-util'), $enqueue_version);
		wp_enqueue_script('wp-optimize-cache-js', WPO_PLUGIN_URL.'js/cache'.$min_or_not_internal.'.js', array('wp-optimize-send-command', 'smush-js', 'wp-optimize-heartbeat-js', 'wp-optimize-block-ui'), $enqueue_version);
		wp_enqueue_script('wp-optimize-admin-js', WPO_PLUGIN_URL.'js/wpoadmin'.$min_or_not_internal.'.js', array('jquery', 'updraft-queue-js', 'wp-optimize-send-command', 'smush-js', 'wp-optimize-modal', 'wp-optimize-cache-js', 'wp-optimize-heartbeat-js'), $enqueue_version);
		wp_enqueue_style('wp-optimize-admin-css', WPO_PLUGIN_URL.'css/wp-optimize-admin'.$min_or_not_internal.'.css', array(), $enqueue_version);
		// Using tablesorter to help with organising the DB size on Table Information
		// https://github.com/tofsjonas/sortable/
		wp_enqueue_script('sortable-js', WPO_PLUGIN_URL.'js/sortable/sortable'.$min_or_not.'.js', array('wp-optimize-send-command'), $enqueue_version);
		wp_enqueue_script('sortable-a11y-js', WPO_PLUGIN_URL.'js/sortable/sortable.a11y'.$min_or_not.'.js', array('wp-optimize-send-command'), $enqueue_version);

wp_enqueue_style('sortable-css', WPO_PLUGIN_URL.'css/sortable/sortable'.$min_or_not_internal.'.css', array(), $enqueue_version);

$js_variables = $this->wpo_js_translations();
		$js_variables['loggers_classes_info'] = $this->get_loggers_classes_info();
		wp_localize_script('wp-optimize-admin-js', 'wpoptimize', $js_variables);
		
		do_action('wpo_premium_scripts_styles', $min_or_not_internal, $min_or_not, $enqueue_version);

wp_enqueue_script('wp-optimize-status-report', WPO_PLUGIN_URL.'js/status'.$min_or_not_internal.'.js', array('wp-api-fetch', 'wp-optimize-admin-js'), $enqueue_version);

wp_enqueue_script('js-zip', WPO_PLUGIN_URL.'/js/jszip/jszip' . $min_or_not . '.js', array(), $enqueue_version);
	}

/**
	 * Enqueue any required front-end scripts
	 *
	 * @return void
	 */
	public function frontend_enqueue_scripts() {
		if (!current_user_can('manage_options') || !is_admin_bar_showing()) return;
		$enqueue_version = $this->get_enqueue_version();
		$min_or_not_internal = WP_Optimize()->get_min_or_not_internal_string();

// Register or enqueue common scripts
		wp_enqueue_style('wp-optimize-global', WPO_PLUGIN_URL.'css/wp-optimize-global'.$min_or_not_internal.'.css', array(), $enqueue_version);
	}

/**
	 * Load Task Manager
	 */
	public function get_task_manager() {
		include_once(WPO_PLUGIN_MAIN_PATH.'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-tasks-activation.php');

Updraft_Tasks_Activation::check_updates();

include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-meta.php');
		include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task-options.php');
		include_once(WPO_PLUGIN_MAIN_PATH . 'vendor/team-updraft/common-libs/src/updraft-tasks/class-updraft-task.php');
				
		include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-task.php');
		include_once(WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-smush-manager.php');

return Updraft_Smush_Manager();
	}

/**
	 * Indicate whether we have an associated instance of WP-Optimize Premium or not.
	 *
	 * @returns Boolean
	 */
	public static function is_premium() {
		if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && function_exists('WP_Optimize_Premium')) {
			$wp_optimize_premium = WP_Optimize_Premium();
			if (is_a($wp_optimize_premium, 'WP_Optimize_Premium')) return true;
		}
		return false;
	}

/**
	 * Check if script running on Apache web server. $is_apache is set in wp-includes/vars.php. Also returns true if the server uses litespeed.
	 *
	 * @return bool
	 */
	public function is_apache_server() {
		global $is_apache;
		return $is_apache;
	}

/**
	 * Check if script running on IIS web server.
	 *
	 * @return bool
	 */
	public function is_IIS_server() {
		global $is_IIS, $is_iis7;
		return $is_IIS || $is_iis7;
	}

/**
	 * Check if Apache module or modules active.
	 *
	 * @param string|array $module - single Apache module name or list of Apache module names.
	 *
	 * @return bool|null - if null, the result was indeterminate
	 */
	public function is_apache_module_loaded($module) {
		if (!$this->is_apache_server()) return false;
				
		if (!function_exists('apache_get_modules')) return null;

$module_loaded = true;

if (is_array($module)) {
			foreach ($module as $single_module) {
				if (!in_array($single_module, apache_get_modules())) {
					$module_loaded = false;
					break;
				}
			}
		} else {
			$module_loaded = in_array($module, apache_get_modules());
		}

return $module_loaded;
	}

/**
	 * Checks if this is the premium version and loads it. It also ensures that if the free version is installed then it is disabled with an appropriate error message.
	 */
	public function plugins_loaded() {

if (!$this->is_minimum_requirement_met()) {
			$this->add_notice_minimum_requirements_not_met();
			$this->deactivate_plugin();
			WPO_Deactivation::actions();
			return;
		}

if ($this->does_server_handles_cache()) {
			add_filter('wp_optimize_admin_page_wpo_cache_tabs', array($this, 'filter_cache_tabs'), 99, 1);

// If newly migrated to server that handles cache, disable wpo cache
			$cache = $this->get_page_cache();
			if ($cache->is_enabled()) {
				$cache->disable();
			}
		}

add_filter('robots_txt', array($this, 'robots_txt'), 99, 1);

// Run Premium loader if it exists
		if (file_exists(WPO_PLUGIN_MAIN_PATH.'premium.php') && !class_exists('WP_Optimize_Premium')) {
			include_once(WPO_PLUGIN_MAIN_PATH.'premium.php');
		}

// load defaults
		WP_Optimize()->get_options()->set_default_options();

// Initialize loggers.
		$this->setup_loggers();

if ($this->is_active('premium') && false !== ($free_plugin = $this->is_active('free'))) {
			if (!function_exists('deactivate_plugins')) include_once(ABSPATH.'wp-admin/includes/plugin.php');
			deactivate_plugins($free_plugin);

// If WPO_ADVANCED_CACHE is defined, we empty advanced-cache.php to regenerate later. Otherwise it contains the path to free.
			if (defined('WPO_ADVANCED_CACHE') && WPO_ADVANCED_CACHE) {
				$advanced_cache_filename = trailingslashit(WP_CONTENT_DIR) . 'advanced-cache.php';

if (!is_file($advanced_cache_filename) && wp_is_writable(dirname($advanced_cache_filename)) || (is_file($advanced_cache_filename) && wp_is_writable($advanced_cache_filename))) {
					file_put_contents($advanced_cache_filename, '');
				}
			}

// Registers the notice letting the user know it cannot be active if premium is active.
			add_action('admin_notices', array($this, 'show_admin_notice_premium'));
			return;
		}

// Loads the task manager
		$this->get_task_manager();

add_action('init', array($this, 'load_language_file'), 0);

// Load 3rd party plugin compatibilities.
		$this->load_compatibilities();
		
		// Load page cache.
		$this->get_page_cache();

// We use the init hook to avoid the _load_textdomain_just_in_time warning,
		// which is triggered because we use translations during cache initialization
		add_action('init', array($this, 'init_page_cache'), 1);

// Include minify
		$this->get_minify();
		
		// Include delay js
		$this->get_delay_js();

$this->run_updates();

// We need this here because webp can be unavailable because of server moves
		// This deletes already converted webp images and original image file when a media is deleted
		WP_Optimize_WebP_Images::get_instance();

// Include WebP
		if (WPO_USE_WEBP_CONVERSION) {
			$this->get_webp_instance();
		}

// add_filter('updraftcentral_host_plugins', array($this, 'attach_updraftcentral_host'));
		// if (file_exists(WPO_PLUGIN_MAIN_PATH.'central/factory.php')) include_once(WPO_PLUGIN_MAIN_PATH.'central/factory.php');
	}

/**
	 * Loads the language file.
	 *
	 * @return void
	 */
	public function load_language_file() {
		load_plugin_textdomain('wp-optimize', false, dirname(plugin_basename(__FILE__)) . '/languages');
	}

/**
	 * Attach this wp-optimize plugin as host of the UpdraftCentral libraries
	 * (e.g. "central" folder)
	 *
	 * @param array $hosts List of plugins having the "central" library integrated into them
	 *
	 * @return array
	 */
	public function attach_updraftcentral_host($hosts) {
		$hosts[] = 'wp-optimize';
		return $hosts;
	}

/**
	 * Filter cache tabs (when it is Kinsta)
	 *
	 * @param  array $tabs An array of tabs
	 *
	 * @return array $tabs An array of tabs
	 */
	public function filter_cache_tabs($tabs) {
		unset($tabs['preload']);
		unset($tabs['advanced']);
		unset($tabs['gzip']);
		unset($tabs['settings']);
		return $tabs;
	}

/**
	 * Check whether one of free/Premium is active (whether it is this instance or not)
	 *
	 * @param String $which - 'free' or 'premium'
	 *
	 * @return String|Boolean - plugin path (if installed) or false if not
	 */
	private function is_active($which = 'free') {
		$active_plugins = $this->get_active_plugins();
		foreach ($active_plugins as $file) {
			if ('wp-optimize.php' == basename($file)) {
				$plugin_dir = WP_PLUGIN_DIR.'/'.dirname($file);
				if (('free' == $which && !file_exists($plugin_dir.'/premium.php')) || ('free' != $which && file_exists($plugin_dir.'/premium.php'))) return $file;
			}
		}
		return false;
	}

/**
	 * Gets an array of plugins active on either the current site, or site-wide
	 *
	 * @return Array - a list of plugin paths (relative to the plugin directory)
	 */
	private function get_active_plugins() {

// Gets all active plugins on the current site
		$active_plugins = (array) get_option('active_plugins', array());

if (is_multisite()) {
			$network_active_plugins = get_site_option('active_sitewide_plugins');
			if (!empty($network_active_plugins)) {
				$network_active_plugins = array_keys($network_active_plugins);
				$active_plugins = array_merge($active_plugins, $network_active_plugins);
			}
		}

return $active_plugins;
	}

/**
	 * This function checks whether a specific plugin is installed, and returns information about it
	 *
	 * @param  string $name Specify "Plugin Name" to return details about it.
	 * @return array        Returns an array of details such as if installed, the name of the plugin and if it is active.
	 */
	public function is_installed($name) {

// Needed to have the 'get_plugins()' function
		include_once(ABSPATH.'wp-admin/includes/plugin.php');

// Gets all plugins available
		$get_plugins = get_plugins();

$active_plugins = $this->get_active_plugins();

$plugin_info = array();
		$plugin_info['installed'] = false;
		$plugin_info['active'] = false;

// Loops around each plugin available.
		foreach ($get_plugins as $key => $value) {
			// If the plugin name matches that of the specified name, it will gather details.
			if ($value['Name'] != $name && $value['TextDomain'] != $name) continue;
			$plugin_info['installed'] = true;
			$plugin_info['name'] = $key;
			$plugin_info['version'] = $value['Version'];
			if (in_array($key, $active_plugins)) {
				$plugin_info['active'] = true;
			}
			break;
		}
		return $plugin_info;
	}

/**
	 * This is a notice to show users that premium is installed
	 */
	public function show_admin_notice_premium() {
		echo '<div id="wp-optimize-premium-installed-warning" class="error"><p>'.esc_html__('WP-Optimize (Free) has been de-activated, because WP-Optimize Premium is active.', 'wp-optimize').'</p></div>';
		if (isset($_GET['activate'])) unset($_GET['activate']);
	}

/**
	 * Show update to Premium notice for non-premium multisite.
	 */
	public function show_multisite_update_to_premium_notice() {
		if (!is_multisite() || self::is_premium()) return;

echo '<p><a href="'.esc_url($this->premium_version_link).'">'.esc_html__('New feature: WP-Optimize Premium can now optimize all sites within a multisite install, not just the main one.', 'wp-optimize').'</a></p>';
	}

public function admin_init() {
		$pagenow = $GLOBALS['pagenow'];

$this->register_template_directories();

if (('index.php' == $pagenow && current_user_can('update_plugins')) || ('index.php' == $pagenow && defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
			$options = $this->get_options();

$dismissed_until = $options->get_option('dismiss_dash_notice_until', 0);

if (file_exists(WPO_PLUGIN_MAIN_PATH . 'index.html')) {
				$installed = filemtime(WPO_PLUGIN_MAIN_PATH . 'index.html');
				$installed_for = (time() - $installed);
			}

if (($installed && time() > $dismissed_until && $installed_for > (14 * 86400) && !defined('WP_OPTIMIZE_NOADS_B')) || (defined('WP_OPTIMIZE_FORCE_DASHNOTICE') && WP_OPTIMIZE_FORCE_DASHNOTICE)) {
				add_action('all_admin_notices', array($this, 'show_admin_notice_upgraded'));
			}
		}

if ($this->is_wp_smush_installed()) {
			add_filter('transient_wp-smush-conflict_check', array($this, 'modify_wp_smush_conflict_check'), 9, 1);
		}
		if ($this->get_options()->get_option('404_detector', 0)) {
			WP_Optimize_Performance::get_instance($this->get_404_detector())->init();
		}
	}

/**
	 * Checks whether the WP Smush plugin is active or not
	 *
	 * @return bool
	 */
	private function is_wp_smush_installed() {
		return is_plugin_active('wp-smushit/wp-smush.php');
	}

/**
	 * Remove WPO plugin name from WP Smushit transient value
	 *
	 * @return array $active_plugins
	 */
	public function modify_wp_smush_conflict_check($active_plugins) {
		// This can be boolean value since it is return value of get_transient
		if (!is_array($active_plugins)) return $active_plugins;

if (false !== ($key = array_search('WP-Optimize - Clean, Compress, Cache', $active_plugins))) {
			unset($active_plugins[$key]);
		}
		return $active_plugins;
	}

/**
	 * Get the install or update notice instance
	 *
	 * @return WP_Optimize_Install_Or_Update_Notice
	 */
	public function get_install_or_update_notice() {
		static $instance = null;
		if (is_a($instance, 'WP_Optimize_Install_Or_Update_Notice')) return $instance;
		$instance = new WP_Optimize_Install_Or_Update_Notice();
		return $instance;
	}

/**
	 * Display an admin notice for an upgraded version.
	 */
	public function show_admin_notice_upgraded() {
		$this->include_template('notices/thanks-for-using-main-dash.php', false, array(
			'is_premium' => WP_Optimize::is_premium()
		));
	}
			
	public function capability_required() {
		return apply_filters('wp_optimize_capability_required', 'manage_options');
	}

/**
	 * Returns array of translations used in javascript code.
	 *
	 * @return array
	 */
	public function wpo_js_translations() {
		$log_message = __('For more details, please check your logs configured in logging destinations settings.', 'wp-optimize');
		return apply_filters('wpo_js_translations', array(
			'automatic_backup_before_optimizations' => __('Automatic backup before optimizations', 'wp-optimize'),
			'error_unexpected_response' => __('An unexpected response was received.', 'wp-optimize'),
			'optimization_complete' => __('Optimization complete', 'wp-optimize'),
			'with_warnings' => __('(with warnings - open the browser console for more details)', 'wp-optimize'),
			'optimizing_table' => __('Optimizing table:', 'wp-optimize'),
			'run_optimizations' => __('Run optimizations', 'wp-optimize'),
			'table_optimization_timeout' => 120000,
			'add' => __('Add', 'wp-optimize'),
			'cancel' => __('Cancel', 'wp-optimize'),
			'cancelling' => __('Cancelling...', 'wp-optimize'),
			'enable' => __('Enable', 'wp-optimize'),
			'disable' => __('Disable', 'wp-optimize'),
			'please_select_settings_file' => __('Please, select settings file.', 'wp-optimize'),
			'are_you_sure_you_want_to_remove_logging_destination' => __('Are you sure you want to remove this logging destination?', 'wp-optimize'),
			'fill_all_settings_fields' => __('Before saving, you need to complete the currently incomplete settings (or remove them).', 'wp-optimize'),
			// translators: %s is the table name
			'table_was_not_repaired' => __('%s was not repaired.', 'wp-optimize') . ' ' . $log_message,
			// translators: %s is the table name
			'table_was_not_deleted' => __('%s was not deleted.', 'wp-optimize') . ' ' . $log_message,
			// translators: %s is the table name
			'table_was_not_converted' => __('%s was not converted to InnoDB.', 'wp-optimize') . ' ' . $log_message,
			'please_use_positive_integers' => __('Please use positive integers.', 'wp-optimize'),
			'please_use_valid_values' => __('Please use valid values.', 'wp-optimize'),
			'update' => __('Update', 'wp-optimize'),
			'run_now' => __('Run now', 'wp-optimize'),
			'starting_preload' => __('Started preload...', 'wp-optimize'),
			'loading_urls' => __('Loading URLs...', 'wp-optimize'),
			'current_cache_size' => __('Current cache size:', 'wp-optimize'),
			'number_of_files' => __('Number of files:', 'wp-optimize'),
			'toggle_info' => __('Show information', 'wp-optimize'),
			'delete_file' => __('Delete', 'wp-optimize'),
			'deleting' => __('Deleting...', 'wp-optimize'),
			'added_to_list' => __('Added to the list', 'wp-optimize'),
			'added_notice' => __('The file was added to the list', 'wp-optimize'),
			'save_notice' => __('Save the changes', 'wp-optimize'),
			'saving' => __('Saving...', 'wp-optimize'),
			'clearing_cache' => __('Clearing cache...', 'wp-optimize'),
			'creating_cache' => __('Creating cache...', 'wp-optimize'),
			'page_refresh' => __('Refreshing the page to reflect changes...', 'wp-optimize'),
			'cache_file_not_found' => __('Cache file was not found.', 'wp-optimize'),
			'settings_have_been_deleted_successfully' => __('WP-Optimize settings have been deleted successfully.', 'wp-optimize'),
			'loading_data' => __('Loading data...', 'wp-optimize'),
			'spinner_src' => esc_url(admin_url('images/spinner-2x.gif')),
			'logo_src' => esc_url(WPO_PLUGIN_URL.'images/notices/wp_optimize_logo.png'),
			'settings_page_url' => is_multisite() ? network_admin_url('admin.php?page=wpo_settings') : admin_url('admin.php?page=wpo_settings'),
			'sites' => $this->get_sites(),
			'user_always_ignores_table_deletion_warning' => (get_user_meta(get_current_user_id(), 'wpo-ignores-table-deletion-warning', true)) ? true : false,
			'user_always_ignores_post_meta_deletion_warning' => (get_user_meta(get_current_user_id(), 'wpo-ignores-post-meta-deletion-warning', true)) ? true : false,
			'user_always_ignores_orphaned_relationship_data_deletion_warning' => (get_user_meta(get_current_user_id(), 'wpo-ignores-orphaned-relationship-data-deletion-warning', true)) ? true : false,
			'post_meta_tweak_completed' => __('The tweak has been performed.', 'wp-optimize'),
			'no_minified_assets' => __('No minified files are present', 'wp-optimize'),
			'network_site_url' => network_site_url(),
			'export_settings_file_name' => 'wpoptimize-settings-'.sanitize_title(get_bloginfo('name')).'.json',
			'import_select_file' => __('You have not yet selected a file to import.', 'wp-optimize'),
			'import_invalid_json_file' => __('Error: The chosen file is corrupt.', 'wp-optimize') . ' ' . __('Please choose a valid WP-Optimize export file.', 'wp-optimize'),
			'importing' => __('Importing...', 'wp-optimize'),
			'importing_data_from' => __('This will import data from:', 'wp-optimize'),
			'exported_on' => __('Which was exported on:', 'wp-optimize'),
			'continue_import' => __('Do you want to carry out the import?', 'wp-optimize'),
			'select_destination' => __('Select destination', 'wp-optimize'),
			'show' => __('Show', 'wp-optimize'),
			'hide' => __('Hide', 'wp-optimize'),
			'please_wait' => __('Please wait a moment...', 'wp-optimize'),
			'clipboard_failed' => __('Copy to clipboard failed, please do it manually', 'wp-optimize'),
			'clipboard_success' => __('System status has been copied to the clipboard', 'wp-optimize'),
			'show_information' => __('Show information', 'wp-optimize'),
			'hide_information' => __('Hide information', 'wp-optimize'),
			'data_not_available' => __('Not available', 'wp-optimize')
		));
	}

/**
	 * Manages the admin bar menu for caching (currently page and minify)
	 */
	public function cache_admin_bar($wp_admin_bar) {

$options = $this->get_options();
		if (!$options->get_option('enable_cache_in_admin_bar', true)) return;

/**
		 * The "purge cache" menu items
		 *
		 * @param array  $menu_items - The menu items, in the format required by $wp_admin_bar->add_menu()
		 * @param object $wp_admin_bar
		 */
		$menu_items = apply_filters('wpo_cache_admin_bar_menu_items', array(), $wp_admin_bar);

if (empty($menu_items) || !is_array($menu_items)) return;

$wp_admin_bar->add_menu(array(
			'id'    => 'wpo_purge_cache',
			'title' => __('Purge cache', 'wp-optimize'),
			'href'  => '#',
			'meta'  => array(
				'title' => __('Purge cache', 'wp-optimize'),
			),
			'parent' => false,
		));

foreach ($menu_items as $item) {
			$wp_admin_bar->add_menu($item);
		}
	}

/**
	 * Add settings link on plugin page
	 *
	 * @param  string $links Passing through the URL to be used within the HREF.
	 * @return string        Returns the Links.
	 */
	public function plugin_settings_link($links) {

$admin_page_url = $this->get_options()->admin_page_url();
		$settings_page_url = $this->get_options()->admin_page_url('wpo_settings');

if (false == self::is_premium()) {
			$premium_link = '<a href="' . esc_url($this->premium_version_link) . '" target="_blank">' . __('Premium', 'wp-optimize') . '</a>';
			array_unshift($links, $premium_link);
		}

$settings_link = '<a href="' . esc_url($settings_page_url) . '">' . __('Settings', 'wp-optimize') . '</a>';
		array_unshift($links, $settings_link);

$optimize_link = '<a href="' . esc_url($admin_page_url) . '">' . __('Optimize', 'wp-optimize') . '</a>';
		array_unshift($links, $optimize_link);
		return $links;
	}

/**
	 * Action wpo_tables_list_additional_column_data. Output button Optimize in the action column.
	 *
	 * @param string $content    String for output to column
	 * @param object $table_info Object with table info.
	 *
	 * @return string
	 */
	public function tables_list_additional_column_data($content, $table_info) {
		if ($table_info->is_needing_repair) {
			$content .= '<div class="wpo_button_wrap">'
				. '<button class="button button-secondary run-single-table-repair" data-table="' . esc_attr($table_info->Name) . '">' . __('Repair', 'wp-optimize') . '</button>'
				. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">' // phpcs:ignore PluginCheck.CodeAnalysis.ImageFunctions.NonEnqueuedImage -- N/A
				. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
				. '</div>';
		}

// table belongs to plugin.
		if ($table_info->can_be_removed) {
			$content .= '<div>'
				. '<button class="button button-secondary run-single-table-delete" data-table="' . esc_attr($table_info->Name) . '">' . __('Remove', 'wp-optimize') . '</button>'
				. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">' // phpcs:ignore PluginCheck.CodeAnalysis.ImageFunctions.NonEnqueuedImage -- N/A
				. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
				. '</div>';
		}

// Add option for MyISAM to InnoDB conversion.
		if ('MyISAM' == $table_info->Engine) {
			$content .= '<div class="wpo_button_convert wpo_button_wrap">'
				. '<button class="button button-secondary toinnodb" data-table="' . esc_attr($table_info->Name) . '">' . __('Convert to InnoDB', 'wp-optimize') . '</button>'
				. '<img class="optimization_spinner visibility-hidden" src="' . esc_attr(admin_url('images/spinner-2x.gif')) . '" width="20" height="20" alt="...">' // phpcs:ignore PluginCheck.CodeAnalysis.ImageFunctions.NonEnqueuedImage -- N/A
				. '<span class="optimization_done_icon dashicons dashicons-yes visibility-hidden"></span>'
				. '</div>';
						
		}
				
		return $content;
	}

/**
	 * Initialize WP-Optimize page cache.
	 */
	public function init_page_cache() {
		if ($this->get_page_cache()->config->get_option('enable_page_caching', false)) {
			if ((!(defined('WP_CLI') && WP_CLI)) && (!defined('DOING_AJAX') || !DOING_AJAX)) {
				$this->_cache_init_status = $this->get_page_cache()->enable();
			}
		}
	}

/**
	 * Get init_page_cache() status.
	 *
	 * @return bool
	 */
	public function get_init_page_cache_status() {
		return $this->_cache_init_status;
	}

/**
	 * Schedules cron event based on selected schedule type
	 *
	 * @return void
	 */
	public function cron_activate() {
		$gmt_offset = (int) (3600 * get_option('gmt_offset'));

$options = $this->get_options();

if ($options->get_option('schedule') === false) {
			$options->set_default_options();
		} else {
			if ('true' == $options->get_option('schedule')) {
				if (!wp_next_scheduled('wpo_cron_event2')) {
					$schedule_type = $options->get_option('schedule-type', 'wpo_weekly');

// Backward compatibility
					if ('wpo_otherweekly' == $schedule_type) $schedule_type = 'wpo_fortnightly';

$this_time = (86400 * 7);

switch ($schedule_type) {
						case "wpo_daily":
							$this_time = 86400;
							break;

case "wpo_weekly":
							$this_time = (86400 * 7);
							break;

case "wpo_fortnightly":
							$this_time = (86400 * 14);
							break;

case "wpo_monthly":
							$this_time = (86400 * 30);
							break;
					}

add_action('wpo_cron_event2', array($this, 'cron_action'));
					$result = wp_schedule_event((current_time("timestamp", 0) + $this_time - $gmt_offset), $schedule_type, 'wpo_cron_event2');
					WP_Optimize()->log('running wp_schedule_event()');
					if (is_wp_error($result)) {
						$error_msg = $result->get_error_message();
						WP_Optimize()->log($error_msg);
						WP_Optimize()->log(print_r($result, true));
					} else {
						WP_Optimize()->log($result);
					}
				}
			}
		}
	}

/**
	 * Clears all cron events
	 *
	 * @return void
	 */
	public function wpo_cron_deactivate() {
		$cron_jobs = _get_cron_array();
		foreach ($cron_jobs as $job) {
			foreach (array_keys($job) as $hook) {
				if (preg_match('/^wpo_/', $hook)) wp_unschedule_hook($hook);
			}
		}
	}

/**
	 * Scheduler public functions to update schedulers
	 *
	 * @param  array $schedules An array of schedules being passed.
	 * @return array            An array of schedules being returned.
	 */
	public function cron_schedules($schedules) {
		$schedules['wpo_daily'] = array('interval' => 86400, 'display' => 'Once Daily');
		$schedules['wpo_weekly'] = array('interval' => 86400 * 7, 'display' => 'Once Weekly');
		$schedules['wpo_fortnightly'] = array('interval' => 86400 * 14, 'display' => 'Once Every Fortnight');
		$schedules['wpo_monthly'] = array('interval' => 86400 * 30, 'display' => 'Once Every Month');
		return $schedules;
	}

/**
	 * Returns count of overdue cron jobs.
	 *
	 * @return integer
	 */
	public function howmany_overdue_crons() {
		$how_many_overdue = 0;
		if (function_exists('_get_cron_array') || (is_file(ABSPATH.WPINC.'/cron.php') && include_once(ABSPATH.WPINC.'/cron.php') && function_exists('_get_cron_array'))) {
			$crons = _get_cron_array();
			if (is_array($crons)) {
				$timenow = time();
				foreach ($crons as $jt => $job) {
					if ($jt < $timenow) {
						$how_many_overdue++;
					}
				}
			}
		}
		return $how_many_overdue;
	}

/**
	 * Run updates on plugin activation.
	 */
	public function run_updates() {
		include_once(WPO_PLUGIN_MAIN_PATH.'includes/class-wp-optimize-updates.php');
		WP_Optimize_Updates::check_updates();
	}

/**
	 * Returns warning about overdue crons.
	 *
	 * @param int $howmany count of overdue crons
	 * @return string
	 */
	public function show_admin_warning_overdue_crons($howmany) {
		$ret = '<div class="updated below-h2"><p>';
		// translators: %d is number of overdue cron jobs
		$ret .= '<strong>'.esc_html__('Warning', 'wp-optimize').':</strong> '.sprintf(esc_html__('WordPress has a number (%d) of scheduled tasks which are overdue.', 'wp-optimize'), $howmany).' '. esc_html__('Unless this is a development site, this probably means that the scheduler in your WordPress install is not working.', 'wp-optimize').' <a target="_blank" href="'.esc_url(apply_filters('wpoptimize_com_link', "https://getwpo.com/faqs/the-scheduler-in-my-wordpress-installation-is-not-working-what-should-i-do/")).'">'.esc_html__('Read this page for a guide to possible causes and how to fix it.', 'wp-optimize').'</a>';
		$ret .= '</p></div>';
		return $ret;
	}

private function wp_normalize_path($path) {
		// Wp_normalize_path is not present before WP 3.9.
		if (function_exists('wp_normalize_path')) return wp_normalize_path($path);
		// Taken from WP 4.6.
		$path = str_replace('\\', '/', $path);
		$path = preg_replace('|(?<=.)/+|', '/', $path);
		if (':' === substr($path, 1, 1)) {
			$path = ucfirst($path);
		}
		return $path;
	}

public function get_templates_dir() {
		return apply_filters('wp_optimize_templates_dir', $this->wp_normalize_path(WPO_PLUGIN_MAIN_PATH.'templates'));
	}

public function get_templates_url() {
		return apply_filters('wp_optimize_templates_url', WPO_PLUGIN_URL.'templates');
	}

/**
	 * Return or output view content
	 *
	 * @param String  $path                   - path to template, usually relative to templates/ within the WP-O directory
	 * @param Boolean $return_instead_of_echo - what to do with the results
	 * @param Array	  $extract_these		  - key/value pairs for substitution into the scope of the template
	 *
	 * @return String|Void
	 */
	public function include_template($path, $return_instead_of_echo = false, $extract_these = array()) {
		if ($return_instead_of_echo) ob_start();

if (preg_match('#^([^/]+)/(.*)$#', $path, $matches)) {
			$prefix = $matches[1];
			$suffix = $matches[2];
			if (isset($this->template_directories[$prefix])) {
				$template_file = $this->template_directories[$prefix].'/'.$suffix;
			}
		}

if (!isset($template_file)) {
			$template_file = WPO_PLUGIN_MAIN_PATH.'templates/'.$path;
		}

$template_file = apply_filters('wp_optimize_template', $template_file, $path);

do_action('wp_optimize_before_template', $path, $template_file, $return_instead_of_echo, $extract_these);

if (!file_exists($template_file)) {
			error_log("WP Optimize: template not found: ".$template_file);
			echo esc_html__('Error:', 'wp-optimize').' '.esc_html__('template not found', 'wp-optimize')." (".esc_html($path).")";
		} else {
				extract($extract_these);
				// The following are useful variables which can be used in the template.
				// They appear as unused, but may be used in the $template_file.
				$wpdb = $GLOBALS['wpdb'];// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wpdb might be used in the included template
				$wp_optimize = $this;// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize might be used in the included template
				$optimizer = $this->get_optimizer();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $optimizer might be used in the included template
				$options = $this->get_options();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $options might be used in the included template
				$wp_optimize_notices = $this->get_notices();// phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable -- $wp_optimize_notices might be used in the included template
				include $template_file;
		}

do_action('wp_optimize_after_template', $path, $template_file, $return_instead_of_echo, $extract_these);

if ($return_instead_of_echo) return ob_get_clean();
	}

/**
	 * Build a list of template directories (stored in self::$template_directories)
	 */
	private function register_template_directories() {

$template_directories = array();

$templates_dir = $this->get_templates_dir();

if ($dh = opendir($templates_dir)) {
			while (($file = readdir($dh)) !== false) {
				if ('.' == $file || '..' == $file) continue;
				if (is_dir($templates_dir.'/'.$file)) {
					$template_directories[$file] = $templates_dir.'/'.$file;
				}
			}
				closedir($dh);
		}

// Optimal hook for most extensions to hook into.
		$this->template_directories = apply_filters('wp_optimize_template_directories', $template_directories);

}

/**
	 * Message to debug
	 *
	 * @param string $message Message to insert into the log.
	 * @param array  $context array with variables used in $message like in template,
	 * 						  for ex.
	 *						  $message = 'Hello {message}';
	 * 						  $context = ['message' => 'world']
	 * 						  'Hello world' string will be saved in log.
	 */
	public function log($message, $context = array()) {
		$this->get_logger()->debug($message, $context);
	}

/**
	 * Format Bytes Into KB/MB
	 *
	 * @param  mixed   $bytes    Number of bytes to be converted.
	 * @param  integer $decimals the number of decimal digits
	 * @return integer        return the correct format size.
	 */
	public function format_size($bytes, $decimals = 2) {
		if (!is_numeric($bytes)) return __('N/A', 'wp-optimize');

if (1073741824 <= $bytes) {
			$bytes = number_format($bytes / 1073741824, $decimals) . ' GB';
		} elseif (1048576 <= $bytes) {
			$bytes = number_format($bytes / 1048576, $decimals) . ' MB';
		} elseif (1024 <= $bytes) {
			$bytes = number_format($bytes / 1024, $decimals) . ' KB';
		} elseif (1 < $bytes) {
			$bytes = $bytes . ' bytes';
		} elseif (1 == $bytes) {
			$bytes = $bytes . ' byte';
		} else {
			$bytes = '0 bytes';
		}

return $bytes;
	}

/**
	 * Format a timestamp into a juman readable date time
	 *
	 * @param int	 $timestamp Epoch timestamp to convert
	 * @param string $separator String separator
	 * @return string
	 */
	public function format_date_time($timestamp, $separator = ' @ ') {
		return date_i18n(get_option('date_format'). $separator .get_option('time_format'), ($timestamp + get_option('gmt_offset') * 3600));
	}

/**
	 * Executed this function on cron event.
	 *
	 * @return void
	 */
	public function cron_action() {

$optimizer = $this->get_optimizer();
		$options = $this->get_options();

$this->log('WPO: Starting cron_action()');
		$options->update_option('last-optimized', time());
		if ('true' == $options->get_option('schedule')) {
			$this_options = $options->get_option('auto');

// Currently the output of the optimizations is not saved/used/logged.
			$optimizer->do_optimizations($this_options, 'auto');
		}

}

/**
	 * Schedule cron tasks used by plugin.
	 *
	 * @return void
	 */
	public function schedule_plugin_cron_tasks() {
		if (!wp_next_scheduled('wpo_weekly_cron_tasks')) {
			wp_schedule_event(current_time("timestamp", 0), 'weekly', 'wpo_weekly_cron_tasks');
		}

add_action('wpo_weekly_cron_tasks', array($this, 'do_weekly_cron_tasks'));
		WP_Optimize_404_Detector_Cron::get_instance();
	}

/**
	 * Do plugin background tasks.
	 *
	 * @return void
	 */
	public function do_weekly_cron_tasks() {
		// add tasks here.
		$this->get_db_info()->update_plugin_json();
	}

/**
	 * This will customize a URL with a correct Affiliate link
	 * This function can be update to suit any URL as longs as the URL is passed
	 *
	 * @param String  $url					  - URL to be check to see if it an updraftplus match.
	 * @param String  $text					  - Text to be entered within the href a tags.
	 * @param String  $html					  - Any specific HTML to be added. Supplied parameter will not be escaped in this function. Provide escaped, safe HTML
	 * @param String|Array	$attrs                  - Specify the HTML attributes as an array or string. Use the array format for multiple attributes (e.g., array( "class" => "lorem-ipsum", "title" => "Highlighting text" )), and use the string format for a single attribute (e.g., 'class="lorem-ipsum"').
	 * @param Boolean	$return_instead_of_echo - if set, then the result will be returned, not echo-ed.
	 * @return String|void
	 */
	public function wp_optimize_url($url, $text = '', $html = '', $attrs = '', $return_instead_of_echo = false) {
		// Check if the URL is UpdraftPlus.
		$url = $this->maybe_add_affiliate_params($url);		// Return URL - check if there is HTML such as images.
		
		// Check if the variable $text is empty (null value included), otherwise assign $html.
		$content = empty($text) ? $html : esc_html($text);
		
		// Check if $attrs is an array to convert the attributes into a string line.
		$str_attrs = '';
		if (is_array($attrs)) {
			foreach ($attrs as $attr => $value) {
				$str_attrs .= $attr . '="' . esc_attr($value) . '" ';
			}
		} else {
			// If $attrs is empty, the explode function will only return an empty array.
			$attrs = explode('=', $attrs);
			// Check if $attrs in positions 1 and 2 are not empty and exist; otherwise, return an empty string.
			$str_attrs = !empty($attrs[0]) && !empty($attrs[1]) ? $attrs[0] . '="' . esc_attr(str_replace('"', '', $attrs[1])) . '"' : '';
		}
		
		// Check if it is necessary to add a target value if the url is external
		$is_external_url = $this->is_external_url($url);
		if ($is_external_url) {
			$str_attrs = preg_replace('/\s+target="_blank"/i', '', $str_attrs);
			$str_attrs .= ' target="_blank"';
		}
		
		$result = sprintf(
			'<a href="%s" %s>%s</a>',
			esc_url($url),
			$str_attrs,
			wp_kses_post($content)
		);

if ($return_instead_of_echo) return $result;
		echo wp_kses_post($result);
	}
	
	/**
	 * Check if a URL is external
	 *
	 * @param string $url
	 * @return string
	 */
	public function is_external_url($url) {
		if (empty($url)) {
			return false;
		}
		
		$current_domain = wp_parse_url(home_url(), PHP_URL_HOST);
		$url = wp_parse_url($url, PHP_URL_HOST);

// Compare the domains and return true if they are different
		return $current_domain !== $url;
	}

/**
	 * Get an URL with an eventual affiliate ID
	 *
	 * @param string $url
	 * @return string
	 */
	public function maybe_add_affiliate_params($url) {
		// Check if the URL is UpdraftPlus.
		if (false !== strpos($url, '//updraftplus.com')) {
			// Set URL with Affiliate ID.
			$url = add_query_arg(array('afref' => $this->get_notices()->get_affiliate_id()), $url);

// Apply filters.
			$url = apply_filters('wpoptimize_updraftplus_com_link', $url);
		}
		return apply_filters('wpoptimize_maybe_add_affiliate_params', $url);
	}

/**
	 * Setup WPO logger(s)
	 */
	public function setup_loggers() {

$logger = $this->get_logger();
		$loggers = $this->wpo_loggers();

if (!empty($loggers)) {
			foreach ($loggers as $_logger) {
				$logger->add_logger($_logger);
			}
		}

add_action('wp_optimize_after_optimizations', array($this, 'after_optimizations_logger_action'));
	}

/**
	 * Run logger actions after all optimizations done
	 */
	public function after_optimizations_logger_action() {
		$loggers = $this->get_logger()->get_loggers();
		if (!empty($loggers)) {
			foreach ($loggers as $logger) {
				if (is_a($logger, 'Updraft_Email_Logger')) {
					$logger->flush_log();
				}
			}
		}
	}

/**
	 * Returns list of WPO loggers instances
	 * Apply filter wp_optimize_loggers
	 *
	 * @return array
	 */
	public function wpo_loggers() {

$loggers = array();
		$loggers_classes_by_id = array();
		$options_keys = array();

$loggers_classes = $this->get_loggers_classes();

foreach ($loggers_classes as $logger_class => $source) {
			$loggers_classes_by_id[strtolower($logger_class)] = $logger_class;
		}

$options = $this->get_options();
				
		$saved_loggers = $options->get_option('logging');
		$logger_additional_options = $options->get_option('logging-additional');

// create loggers classes instances.
		if (!empty($saved_loggers)) {
			// check for previous version options format.
			$keys = array_keys($saved_loggers);

// if options stored in old format then reformat it.
			if (false == is_numeric($keys[0])) {
				$_saved_loggers = array();
					foreach ($saved_loggers as $logger_id => $enabled) {
						if ($enabled) {
							$_saved_loggers[] = $logger_id;
						}
					}

// fill email with admin.
					if (array_key_exists('updraft_email_logger', $saved_loggers) && $saved_loggers['updraft_email_logger']) {
						$logger_additional_options['updraft_email_logger'] = array(
							get_option('admin_email')
						);
					}

$saved_loggers = $_saved_loggers;
			}

foreach ($saved_loggers as $i => $logger_id) {

if (!array_key_exists($logger_id, $loggers_classes_by_id)) continue;

$logger_class = $loggers_classes_by_id[$logger_id];

$logger = new $logger_class();

$logger_options = $logger->get_options_list();

if (!empty($logger_options)) {
					foreach (array_keys($logger_options) as $option_name) {
						if (array_key_exists($option_name, $options_keys)) {
							$options_keys[$option_name]++;
						} else {
									$options_keys[$option_name] = 0;
						}

$option_value = isset($logger_additional_options[$option_name][$options_keys[$option_name]]) ? $logger_additional_options[$option_name][$options_keys[$option_name]] : '';

// if options in old format then get correct value.
						if ('' === $option_value && array_key_exists($logger_id, $logger_additional_options)) {
							$option_value = array_shift($logger_additional_options[$logger_id]);
						}

$logger->set_option($option_name, $option_value);
					}
				}

// check if logger is active.
				$active = (!is_array($logger_additional_options) || (array_key_exists('active', $logger_additional_options) && empty($logger_additional_options['active'][$i]))) ? false : true;

if ($active) {
					$logger->enable();
				} else {
					$logger->disable();
				}

$loggers[] = $logger;
			}
		}

$loggers = apply_filters('wp_optimize_loggers', $loggers);

return $loggers;
	}

/**
	 * Returns associative array with logger class name in a key and path to class file in a value.
	 *
	 * @return array
	 */
	public function get_loggers_classes() {
		$loggers_classes = array(
			'Updraft_PHP_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-php-logger.php',
			'Updraft_Email_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-email-logger.php',
			'Updraft_Ring_Logger' => WPO_PLUGIN_MAIN_PATH . 'includes/class-updraft-ring-logger.php'
		);

$loggers_classes = apply_filters('wp_optimize_loggers_classes', $loggers_classes);

if (!empty($loggers_classes)) {
			foreach ($loggers_classes as $logger_class => $logger_file) {
				if (!class_exists($logger_class)) {
					if (is_file($logger_file)) {
						include_once($logger_file);
					}
				}
			}
		}

return $loggers_classes;
	}

/**
	 * Returns information about all loggers classes.
	 *
	 * @return array
	 */
	public function get_loggers_classes_info() {
		$loggers_classes = $this->get_loggers_classes();

$loggers_classes_info = array();

if (!empty($loggers_classes)) {
			foreach (array_keys($loggers_classes) as $logger_class_name) {

if (!class_exists($logger_class_name)) continue;

$logger_id = strtolower($logger_class_name);
				$logger_class = new $logger_class_name();

$loggers_classes_info[$logger_id] = array(
					'description' => $logger_class->get_description(),
					'available' => $logger_class->is_available(),
					'allow_multiple' => $logger_class->is_allow_multiple(),
					'options' => $logger_class->get_options_list()
				);
			}
		}

return $loggers_classes_info;
	}

/**
	 * Returns true if optimization works in multisite mode
	 *
	 * @return boolean
	 */
	public function is_multisite_mode() {
		return (is_multisite() && self::is_premium());
	}

/**
	 * Returns true if current user can run optimizations.
	 *
	 * @return bool
	 */
	public function can_run_optimizations() {
		// we don't check permissions for cron jobs.
		if (defined('DOING_CRON') && DOING_CRON) return true;

if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_run_optimizations')) return false;
		return true;
	}

/**
	 * Returns true if current user can manage plugin options.
	 *
	 * @return bool
	 */
	public function can_manage_options() {
		if (self::is_premium() && false == user_can(get_current_user_id(), 'wpo_manage_settings')) return false;
		return true;
	}

/**
	 * Returns list of all sites in multisite
	 *
	 * @return array
	 */
	public function get_sites() {
		$sites = array();
		if (function_exists('get_sites')) {
			$sites = get_sites(array('network_id' => null, 'deleted' => 0, 'number' => 999999));
		}
		return $sites;
	}

/**
	 * Returns script memory limit in megabytes.
	 *
	 * @param bool $memory_limit
	 * @return int
	 */
	public function get_memory_limit($memory_limit = false) {
		// Returns in megabytes
		if (false == $memory_limit) $memory_limit = ini_get('memory_limit');
		$memory_limit = rtrim($memory_limit);

return $this->return_bytes($memory_limit);
	}

/**
	 * Returns free memory in bytes.
	 *
	 * @return int
	 */
	public function get_free_memory() {
		return $this->get_memory_limit() - memory_get_usage();
	}

/**
	 * Checks PHP memory_limit and WP_MAX_MEMORY_LIMIT values and return minimal.
	 *
	 * @return int memory limit in bytes.
	 */
	public function get_script_memory_limit() {
		$memory_limit = $this->get_memory_limit();

if (defined('WP_MAX_MEMORY_LIMIT')) {
			$wp_memory_limit = $this->get_memory_limit(WP_MAX_MEMORY_LIMIT);

if ($wp_memory_limit > 0 && $wp_memory_limit < $memory_limit) {
				$memory_limit = $wp_memory_limit;
			}
		}

return $memory_limit;
	}

/**
	 * Returns max packet size for database.
	 *
	 * @return int|string
	 */
	public function get_max_packet_size() {
		global $wpdb;
		static $mp = 0;

if ($mp > 0) return $mp;

$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
		// Default to 1MB
		$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
		// 32MB
		if ($mp < 33554432) {
			$save = $wpdb->show_errors(false);
			@$wpdb->query("SET GLOBAL max_allowed_packet=33554432");// phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- suppress errors from displaying
			$wpdb->show_errors($save);

$mp = (int) $wpdb->get_var("SELECT @@session.max_allowed_packet");
			// Default to 1MB
			$mp = (is_numeric($mp) && $mp > 0) ? $mp : 1048576;
		}

return $mp;
	}

/**
	 * Converts shorthand memory notation value to bytes.
	 * From http://php.net/manual/en/function.ini-get.php
	 *
	 * @param string $val shorthand memory notation value.
	 */
	public function return_bytes($val) {
		$val = trim($val);
		$last = strtolower($val[strlen($val)-1]);
		$val = (int) $val;
		switch ($last) {
			case 'g':
			$val *= 1024;
			// no break
			case 'm':
			$val *= 1024;
			// no break
			case 'k':
			$val *= 1024;
		}

return $val;
	}

/**
	 * Log fatal errors to defined log destinations.
	 */
	public function log_fatal_errors() {
		$last_error = error_get_last();

if (isset($last_error['type']) && E_ERROR === $last_error['type']) {
			$this->get_logger()->critical($last_error['message']);
		}
	}

/**
	 * Close browser connection and continue script work. - Taken from UpdraftPlus
	 *
	 * @param array $txt Response to browser; this must be JSON (or if not, alter the Content-Type header handling below)
	 * @return void
	 */
	public function close_browser_connection($txt = '') {
		if (!headers_sent()) {
			// Close browser connection so that it can resume AJAX polling
			header('Content-Length: '.(empty($txt) ? '0' : 4+strlen($txt)));
			header('Content-Type: application/json');
			header('Connection: close');
			header('Content-Encoding: none');
		}

if (session_id()) session_write_close();
		echo "\r\n\r\n";
		echo $txt; // phpcs:ignore WordPress.Security.EscapeOutput -- Output is already escaped
		// These two added - 19-Feb-15 - started being required on local dev machine, for unknown reason (probably some plugin that started an output buffer).
		$ob_level = ob_get_level();
		while ($ob_level > 0) {
			ob_end_flush();
			$ob_level--;
		}
		flush();
		if (function_exists('fastcgi_finish_request')) fastcgi_finish_request();
		if (function_exists('litespeed_finish_request')) litespeed_finish_request();
	}

/**
	 * Try to change PHP script time limit.
	 */
	public function change_time_limit() {
		$time_limit = (defined('WP_OPTIMIZE_SET_TIME_LIMIT') && WP_OPTIMIZE_SET_TIME_LIMIT > 15) ? WP_OPTIMIZE_SET_TIME_LIMIT : 1800;

@set_time_limit($time_limit); // phpcs:ignore Generic.PHP.NoSilencedErrors.Discouraged -- Try to reduce the chances of PHP self-terminating via reaching max_execution_time.
	}

/**
	 * Does the request come from UDC
	 *
	 * @return boolean
	 */
	public function is_updraft_central_request() {
		return defined('UPDRAFTCENTRAL_COMMAND') && UPDRAFTCENTRAL_COMMAND;
	}

/**
	 * Does the data need to be included in this request. Currently only true if the request is made from UpdraftCentral.
	 *
	 * @return boolean
	 */
	public function template_should_include_data() {
		/**
		 * Filters whether data should be included in certain templates or not.
		 */
		return apply_filters('wpo_template_should_include_data', $this->is_updraft_central_request());
	}

/**
	 * Load the templates for the modal window
	 */
	public function load_modal_template() {
		$this->include_template('modal.php');
	}

/**
	 * Adds compress popup template
	 */
	public function add_smush_popup_template() {
		if (current_user_can($this->capability_required())) {
			$compression_server_hint = Updraft_Smush_Manager()->get_compression_server_hint();
			$this->include_template('images/smush-popup.php', false, array('compression_server_hint' => $compression_server_hint));
		}
	}

/**
	 * Delete transients and semaphores data from options table.
	 */
	public function delete_transients_and_semaphores() {
		global $wpdb;

$masks = array(
			'updraft_locked_wpo_%',
			'updraft_unlocked_wpo_%',
			'updraft_last_lock_time_wpo_%',
			'updraft_semaphore_wpo_%',
			'wpo_locked_%',
			'wpo_unlocked_%',
			'wpo_last_lock_time_%',
			'wpo_semaphore_%',
			'_transient_timeout_wpo_%',
			'_transient_wpo_%',
			'updraft_lock_wpo_%',
			'wpo_last_scheduled_%',
		);

$where_parts = array();
		foreach ($masks as $mask) {
			$where_parts[] = "(`option_name` LIKE '{$mask}')";
		}

$where_clause = implode(' OR ', $where_parts);
		$wpdb->query($wpdb->prepare("DELETE FROM {$wpdb->options} WHERE %s", $where_clause));
	}

/**
	 * Prevents bots from indexing plugins list
	 */
	public function robots_txt($output) {
		$upload_dir = wp_upload_dir();
		$path = wp_parse_url($upload_dir['baseurl']);
		$output .= "\nUser-agent: *";
		$output .= "\nDisallow: " . str_replace($path['scheme'].'://'.$path['host'], '', $upload_dir['baseurl']) . "/wpo/wpo-plugins-tables-list.json\n";
		return $output;
	}

/**
	 * Returns desired enqueue version string
	 *
	 * @return string Enqueue version as string
	 */
	public function get_enqueue_version() {
		return (defined('WP_DEBUG') && WP_DEBUG) ? WPO_VERSION.'.'.time() : WPO_VERSION;
	}

/**
	 * Returns script suffix string
	 *
	 * @return string empty or `.min` suffix string
	 */
	public function get_min_or_not_string() {
		return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '.min';
	}

/**
	 * Returns script suffix string with WPO_VERSION
	 *
	 * @return string empty or min suffix with wpo_version string
	 */
	public function get_min_or_not_internal_string() {
		return (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '-' . str_replace('.', '-', WPO_VERSION) . '.min';
	}

/**
	 * Instantiate Ajax handling class
	 */
	private function load_ajax_handler() {
		WPO_Ajax::get_instance();
	}

/**
	 * Get instance of WP_Optimize_Table_Management
	 *
	 * @return WP_Optimize_Table_Management
	 */
	public function get_table_management() {
		return WP_Optimize_Table_Management::get_instance();
	}

/**
	 * Get instance of WP_Optimize_404_Detector
	 *
	 * @return WP_Optimize_404_Detector
	 */
	public function get_404_detector() {
		return WP_Optimize_404_Detector::get_instance();
	}

/**
	 * Returns the message used to notify the user that the PHP version or WordPress version doesn't meet the requirements.
	 *
	 * @return string
	 */
	public function get_minimum_requirements_notice_message() {
		// translators: %1$s is minimum required PHP version, %2$s is minimum required WordPress version
		return sprintf(esc_html__('WP-Optimize requires a minimum PHP version of %1$s and WordPress version of %2$s or higher', 'wp-optimize'), esc_html(WPO_REQUIRED_PHP_VERSION), esc_html(WPO_REQUIRED_WP_VERSION));
	}

/**
	 * Output notice when PHP version or WordPress version is not meet for WP-Optimize.
	 *
	 * @return void
	 */
	public function output_minimum_requirements_notice() {
		?>
		<div class="notice notice-error is-dismissible">
			<p><?php echo $this->get_minimum_requirements_notice_message(); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- Output is already escaped ?></p>
		</div>
		<?php
	}
}

/**
 * Unschedule specific tasks:
 * `wpo_cron_event2` => DB optimizations
 * `wpo_weekly_cron_tasks` => ex: plugin.json auto update
 *
 * @return void
 */
function wpo_cron_deactivate() {
	WP_Optimize()->log('running wpo_cron_deactivate()');
	wp_clear_scheduled_hook('wpo_cron_event2');
	wp_clear_scheduled_hook('wpo_weekly_cron_tasks');
}

function WP_Optimize() {
	return WP_Optimize::instance();
}

endif;

$GLOBALS['wp_optimize'] = WP_Optimize();

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