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<?php if (!defined('ABSPATH')) die('No direct access allowed'); /** * Page caching rules and exceptions / require_once dirname(__FILE__) . '/file-based-page-cache-functions.php'; if (!class_exists('WPO_Cache_Rules')) : class WPO_Cache_Rules { /* * Cache config object * * @var mixed / public $config; /* * Instance of this class * * @var WPO_Cache_Rules \| null / public static $instance; public function __construct() { $this->config = WPO_Cache_Config::instance()->get(); $this->setup_hooks(); } /* * Setup hooks/filters / public function setup_hooks() { add_action('save_post', array($this, 'purge_post_on_update'), 10, 1); add_action('save_post', array($this, 'purge_archive_pages_on_post_update'), 10, 1); add_action('wp_trash_post', array($this, 'purge_post_on_update'), 10, 1); add_action('comment_post', array($this, 'purge_post_on_comment'), 10, 3); add_action('wp_set_comment_status', array($this, 'purge_post_on_comment_status_change'), 10, 1); add_action('edit_terms', array($this, 'purge_related_elements_on_term_updated'), 10, 2); add_action('set_object_terms', array($this, 'purge_related_elements_on_post_terms_change'), 10, 6); add_action('wpo_cache_config_updated', array($this, 'cache_config_updated'), 10, 1); add_action('wp_insert_comment', array($this, 'comment_inserted'), 10, 2); add_action('import_start', array($this, 'remove_wp_insert_comment')); add_action('update_option_page_on_front', array($this, 'purge_cache_on_homepage_change')); add_action('update_option_page_for_posts', array($this, 'purge_cache_on_blog_page_change'), 10, 2); add_action('update_option_show_avatars', array($this, 'purge_cache_on_avatars_change'), 10, 2); add_action('woocommerce_variation_set_stock', array($this, 'purge_product_page'), 10, 1); add_action('woocommerce_product_set_stock', array($this, 'purge_product_page'), 10, 1); /* * List of hooks for which when executed, the cache will be purged * * @param array $actions The actions / $actions = array( 'after_switch_theme', 'wp_update_nav_menu', 'customize_save_after', array('wp_ajax_save-widget', 0), array('wp_ajax_update-widget', 0), 'autoptimize_action_cachepurged', 'upgrader_overwrote_package', 'wpo_active_plugin_or_theme_updated', 'fusion_cache_reset_after', 'update_option_permalink_structure', 'update_option_posts_per_page', 'wpml_st_add_string_translation', ); $purge_on_action = apply_filters('wpo_purge_cache_hooks', $actions); foreach ($purge_on_action as $action) { if (is_array($action)) { add_action($action[0], array($this, 'purge_cache'), $action[1]); } else { add_action($action, array($this, 'purge_cache')); } } } /* * Purge post cache when there is a new approved comment * * @param int $comment_id Comment ID. * @param int\|string $approved Comment approved status. can be 0, 1 or 'spam'. * @param array $commentdata Comment data array. Always sent be WP core, but a plugin was found that does not send it - https://wordpress.org/support/topic/critical-problems-with-version-3-0-10/ / public function purge_post_on_comment($comment_id, $approved, $commentdata = array()) { if (1 !== $approved) { return; } if (!empty($this->config['enable_page_caching']) && !empty($commentdata['comment_post_ID'])) { $post_id = $commentdata['comment_post_ID']; WPO_Page_Cache::delete_single_post_cache($post_id); WPO_Page_Cache::delete_comments_feed(); WPO_Page_Cache::instance()->file_log("Cache for URL: {{URL}} has been purged, triggered by action: " . current_filter(), $post_id); } } /* * Every time a comment's status changes, purge its parent posts cache * * @param int $comment_id Comment ID. / public function purge_post_on_comment_status_change($comment_id) { if (!empty($this->config['enable_page_caching'])) { $comment = get_comment($comment_id); if (is_object($comment) && !empty($comment->comment_post_ID)) { WPO_Page_Cache::delete_single_post_cache($comment->comment_post_ID); WPO_Page_Cache::delete_comments_feed(); WPO_Page_Cache::instance()->file_log("Cache for URL: {{URL}} has been purged, triggered by action: " . current_filter(), $comment->comment_post_ID); } } } /* * Action when a comment is inserted * * @param integer $comment_id - The comment ID * @param boolean\|WP_Comment $comment - The comment object (from WP 4.4) * @return void / public function comment_inserted($comment_id, $comment = false) { if ($comment && is_a($comment, 'WP_Comment')) { /* * Filters whether to add a cookie when a comment is posted, in order to exclude the page from caching. * Regular comments have the property comment_type set to '' or 'comment'. So by default, only add the cookie in those cases. * * @param boolean $add_cookie * @param WP_Comment $comment * @return boolean / $add_cookie = apply_filters('wpo_add_commented_post_cookie', '' === $comment->comment_type \|\| 'comment' === $comment->comment_type, $comment); if (!$add_cookie) return; $url = get_permalink($comment->comment_post_ID); $url_info = wp_parse_url($url); setcookie('wpo_commented_post', 1, time() + WEEK_IN_SECONDS, $url_info['path'] ?? '/'); } } /* * Comment posted cookie is not needed for imports. So remove the action / public function remove_wp_insert_comment() { remove_action('wp_insert_comment', array($this, 'comment_inserted'), 10); } /* * Automatically purge all file based page cache on post changes * We want the whole cache purged here as different parts * of the site could potentially change on post updates * * @param int $post_id - WP post id / public function purge_post_on_update($post_id) { $post_type = get_post_type($post_id); $post_type_object = get_post_type_object($post_type); if ((defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) \|\| 'revision' === $post_type \|\| null === $post_type_object \|\| !$post_type_object->public) { return; } $post_status = get_post_status($post_id); if ('publish' !== $post_status) { return; } /* * Purge the whole cache if set to true, only the edited post otherwise. Default is false. * * @param boolean $purge_all_cache The default filter value * @param integer $post_id The saved post ID / if (apply_filters('wpo_purge_all_cache_on_update', false, $post_id)) { $this->purge_cache(); } else { if (apply_filters('wpo_delete_cached_homepage_on_post_update', true, $post_id)) WPO_Page_Cache::delete_homepage_cache(); WPO_Page_Cache::delete_feed_cache(); WPO_Page_Cache::delete_single_post_cache($post_id); WPO_Page_Cache::delete_post_feed_cache($post_id); WPO_Page_Cache::instance()->file_log("Cache for URL: {{URL}} has been purged, triggered by action: " . current_filter(), $post_id); } } /* * Purge archive pages on post update. * * @param integer $post_id / public function purge_archive_pages_on_post_update($post_id) { $post_type = get_post_type($post_id); if (false === $post_type) return; if ((defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) \|\| 'revision' === $post_type) { return; } $post_obj = get_post_type_object($post_type); if (null === $post_obj) return; $post_status = get_post_status($post_id); if ('publish' !== $post_status) { return; } if ('post' === $post_type) { // delete blog page cache $blog_post_id = get_option('page_for_posts'); if ($blog_post_id) { WPO_Page_Cache::delete_cache_by_url(get_permalink($blog_post_id), true); WPO_Page_Cache::instance()->file_log("Cache for blog post has been purged due to updates to post with Title: {{title}} and URL: {{URL}}, triggered by action: " . current_filter(), $post_id); } // delete next and previous posts cache. $globals_post = $GLOBALS['post'] ?? false; $GLOBALS['post'] = get_post($post_id); $previous_post = function_exists('get_previous_post') ? get_previous_post() : false; $next_post = function_exists('get_next_post') ? get_next_post() : false; if ($globals_post) $GLOBALS['post'] = $globals_post; if ($previous_post) { WPO_Page_Cache::delete_cache_by_url(get_permalink($previous_post), true); WPO_Page_Cache::instance()->file_log("Cache for previous post (with URL: {{URL}}) adjacent to post with id: " . $post_id . " has been purged, triggered by action: " . current_filter(), $previous_post->ID); } if ($next_post) { WPO_Page_Cache::delete_cache_by_url(get_permalink($next_post), true); WPO_Page_Cache::instance()->file_log("Cache for next post (with URL: {{URL}}) adjacent to post with id: " . $post_id . " has been purged, triggered by action: " . current_filter(), $next_post->ID); } // delete all archive pages for post. $post_date = get_post_time('Y-m-j', false, $post_id); list($year, $month, $day) = $post_date; $archive_links = array( get_year_link($year), get_month_link($year, $month), get_day_link($year, $month, $day), ); foreach ($archive_links as $link) { WPO_Page_Cache::delete_cache_by_url($link, true); } WPO_Page_Cache::instance()->file_log("Cache for all archives page associated with post_type: " . $post_type . " and Title: {{title}} have been purged, triggered by action: " . current_filter(), $post_id); } if ($post_obj->has_archive) { // delete archive page for custom post type. WPO_Page_Cache::delete_cache_by_url(get_post_type_archive_link($post_type), true); WPO_Page_Cache::instance()->file_log("Cache for archive page associated with post_type: " . $post_type . " and Title: {{title}} has been purged, triggered by action: " . current_filter(), $post_id); } if (post_type_supports($post_type, 'author')) { $author_id = get_post_field('post_author', $post_id); $post_author = get_user_by('id', $author_id); if ($author_id && $post_author) { $author_url = get_author_posts_url($author_id); if (!empty($author_url)) { WPO_Page_Cache::delete_cache_by_url($author_url, true); WPO_Page_Cache::instance()->file_log("Cache for author page URL: " . $author_url . " associated with post_type: " . $post_type . " and Title: {{title}} has been purged, triggered by action: " . current_filter(), $post_id); } } } } /* * We use it with edit_terms action filter to purge cached elements related * to updated term when term updated. * * @param int $term_id Term taxonomy ID. * @param string $taxonomy Taxonomy slug. / public function purge_related_elements_on_term_updated($term_id, $taxonomy) { if ('nav_menu' === $taxonomy) return; // purge cached page for term. $term = get_term($term_id, $taxonomy, ARRAY_A); if (is_array($term)) { $term_permalink = get_term_link($term['term_id']); if (!is_wp_error($term_permalink)) { WPO_Page_Cache::delete_cache_by_url($term_permalink, true); WPO_Page_Cache::instance()->file_log("Cache for term page with URL: " . $term_permalink . " have been purged, triggered by action: " . current_filter()); } } // get posts which belongs to updated term. $posts = get_posts(array( 'numberposts' => -1, 'post_type' => 'any', 'fields' => 'ids', 'tax_query' => array( // phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_tax_query -- because we can't use `get_objects_in_term` for `OR` relationships 'relation' => 'OR', array( 'taxonomy' => $taxonomy, 'field' => 'term_id', 'terms' => $term_id, ) ), )); if (!empty($posts)) { foreach ($posts as $post_id) { WPO_Page_Cache::delete_single_post_cache($post_id); } $term_permalink = get_term_link($term_id); WPO_Page_Cache::instance()->file_log("Cache for associated posts for term with URL: " . $term_permalink. " have been purged, triggered by action: " . current_filter()); } } /* * Triggered by set_object_terms action. Used to clear all the terms archives a post belongs to or belonged to before being saved. * * @param int $object_id Object ID. * @param array $terms An array of object terms. * @param array $tt_ids An array of term taxonomy IDs. * @param string $taxonomy Taxonomy slug. * @param bool $append Whether to append new terms to the old terms. * @param array $old_tt_ids Old array of term taxonomy IDs. / public function purge_related_elements_on_post_terms_change($object_id, $terms, $tt_ids, $taxonomy, $append, $old_tt_ids) { $post_type = get_post_type($object_id); if ((defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) \|\| 'revision' === $post_type \|\| 'product_type' === $taxonomy \|\| 'action-group' === $taxonomy) { return; } /* * Adds a way to exit the purge of terms permalink using the provided parameters. * * @param bool $purge The value filtered, whether to purge the related elements or not * @param int $object_id Object ID. * @param array $terms An array of object terms. * @param array $tt_ids An array of term taxonomy IDs. * @param string $taxonomy Taxonomy slug. * @param bool $append Whether to append new terms to the old terms. * @param array $old_tt_ids Old array of term taxonomy IDs. * @default true * @return boolean / if (!apply_filters('wpo_cache_purge_related_elements_on_post_terms_change', true, $object_id, $terms, $tt_ids, $taxonomy, $append, $old_tt_ids)) return; // get all affected terms. $affected_terms_ids = array_unique(array_merge($tt_ids, $old_tt_ids)); if (!empty($affected_terms_ids)) { // walk through all changed terms and purge cached pages for them. $is_cache_purged = false; foreach ($affected_terms_ids as $tt_id) { $term = get_term($tt_id, $taxonomy, ARRAY_A); if (!is_array($term)) continue; $term_permalink = get_term_link($term['term_id']); if (!is_wp_error($term_permalink)) { $url = wp_parse_url($term_permalink); // Check if the permalink contains a valid path, to avoid deleting the whole cache. if (!isset($url['path']) \|\| '/' === $url['path']) return; WPO_Page_Cache::delete_cache_by_url($term_permalink, true); $is_cache_purged = true; } } if ($is_cache_purged) WPO_Page_Cache::instance()->file_log("Cache for multiple term taxonomy have been purged due to post terms update, triggered by action: " . current_filter()); } } /* * Purge product page upon stock update / public function purge_product_page($product_with_stock) { if (!empty($product_with_stock->get_id())) { WPO_Page_Cache::delete_single_post_cache($product_with_stock->get_id()); WPO_Page_Cache::instance()->file_log("Cache for URL: {{URL}} has been purged, triggered by action: " . current_filter(), $product_with_stock->get_id()); } } /* * Purges relevant caches when the "Homepage" option is changed. * * This method is also triggered when the "Homepage displays" option is changed * from a static page to latest posts. In this scenario, the "Homepage" option value * becomes zero. Since the cache for the front-page is already purged here, there's no need * to purge the cache using the`update_option_show_on_front` hook. * * @param string $old_value The old value of the "Homepage" option. / public function purge_cache_on_homepage_change($old_value) { if ($old_value) { WPO_Page_Cache::delete_cache_by_url(get_permalink($old_value)); } WPO_Page_Cache::delete_homepage_cache(); WPO_Page_Cache::instance()->file_log("Cache for homepage has been purged due to change in the Homepage displays options, triggered by action: " . current_filter()); } /* * Purges relevant caches when the "Posts page" option is changed. * * @param string $old_value The old value of the "Posts page" option. * @param string $value The new value of the "Posts page" option. / public function purge_cache_on_blog_page_change($old_value, $value) { if ($old_value) { WPO_Page_Cache::delete_cache_by_url(get_permalink($old_value)); } if ($value) { WPO_Page_Cache::delete_cache_by_url(get_permalink($value)); } WPO_Page_Cache::instance()->file_log("Cache for homepage has been purged due to changes in the Posts page options, triggered by action: " . current_filter()); } /* * Purges cache if the avatars option is changed * * @param boolean $old_value * @param boolean $value / public function purge_cache_on_avatars_change($old_value, $value) { if ($old_value !== $value) { $this->purge_cache(); } } /* * Clears the cache. / public function purge_cache() { if (!empty($this->config['enable_page_caching'])) { wpo_cache_flush(); WPO_Page_Cache::instance()->file_log("Full Cache Purge triggered by action: " . current_filter()); } } /* * Triggered by wpo_cache_config_updated. * * @param array $config / public function cache_config_updated($config) { // delete front page form cache if defined in the settings if (is_array($config['cache_exception_urls']) && in_array('/', $config['cache_exception_urls'])) { WPO_Page_Cache::delete_cache_by_url(home_url()); WPO_Page_Cache::instance()->file_log("Cache for homepage has been purged due to changes in the cache configurations, triggered by action: " . current_filter()); } } /* * Returns an instance of the current class, creates one if it doesn't exist * * @return self */ public static function instance() { if (empty(self::$instance)) { self::$instance = new self(); } return self::$instance; } } endif;