. * Returning anything other than false will short-circuit the function. * @param string $timezone Location to use for getting the post modified date. * See {@see get_lastpostdate()} for accepted `$timezone` values. * @param string $post_type The post type to check. */ $lastpostmodified = apply_filters( 'pre_get_lastpostmodified', false, $timezone, $post_type ); if ( false !== $lastpostmodified ) { return $lastpostmodified; } $lastpostmodified = _get_last_post_time( $timezone, 'modified', $post_type ); $lastpostdate = get_lastpostdate($timezone); if ( $lastpostdate > $lastpostmodified ) { $lastpostmodified = $lastpostdate; } /** * Filter the date the last post was modified. * * @since 2.3.0 * * @param string $lastpostmodified Date the last post was modified. * @param string $timezone Location to use for getting the post modified date. * See {@see get_lastpostdate()} for accepted `$timezone` values. */ return apply_filters( 'get_lastpostmodified', $lastpostmodified, $timezone ); } /** * Get the timestamp of the last time any post was modified or published. * * @since 3.1.0 * @since 4.4.0 The `$post_type` argument was added. * @access private * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $timezone The timezone for the timestamp. See get_lastpostdate(). * for information on accepted values. * @param string $field Post field to check. Accepts 'date' or 'modified'. * @param string $post_type Optional. The post type to check. Default 'any'. * @return string|false The timestamp. */ function _get_last_post_time( $timezone, $field, $post_type = 'any' ) { global $wpdb; if ( ! in_array( $field, array( 'date', 'modified' ) ) ) { return false; } $timezone = strtolower( $timezone ); $key = "lastpost{$field}:$timezone"; if ( 'any' !== $post_type ) { $key .= ':' . sanitize_key( $post_type ); } $date = wp_cache_get( $key, 'timeinfo' ); if ( ! $date ) { if ( 'any' === $post_type ) { $post_types = get_post_types( array( 'public' => true ) ); array_walk( $post_types, array( $wpdb, 'escape_by_ref' ) ); $post_types = "'" . implode( "', '", $post_types ) . "'"; } else { $post_types = "'" . sanitize_key( $post_type ) . "'"; } switch ( $timezone ) { case 'gmt': $date = $wpdb->get_var("SELECT post_{$field}_gmt FROM $wpdb->posts WHERE post_status = 'publish' AND post_type IN ({$post_types}) ORDER BY post_{$field}_gmt DESC LIMIT 1"); break; case 'blog': $date = $wpdb->get_var("SELECT post_{$field} FROM $wpdb->posts WHERE post_status = 'publish' AND post_type IN ({$post_types}) ORDER BY post_{$field}_gmt DESC LIMIT 1"); break; case 'server': $add_seconds_server = date( 'Z' ); $date = $wpdb->get_var("SELECT DATE_ADD(post_{$field}_gmt, INTERVAL '$add_seconds_server' SECOND) FROM $wpdb->posts WHERE post_status = 'publish' AND post_type IN ({$post_types}) ORDER BY post_{$field}_gmt DESC LIMIT 1"); break; } if ( $date ) { wp_cache_set( $key, $date, 'timeinfo' ); } } return $date; } /** * Updates posts in cache. * * @since 1.5.1 * * @param array $posts Array of post objects, passed by reference. */ function update_post_cache( &$posts ) { if ( ! $posts ) return; foreach ( $posts as $post ) wp_cache_add( $post->ID, $post, 'posts' ); } /** * Will clean the post in the cache. * * Cleaning means delete from the cache of the post. Will call to clean the term * object cache associated with the post ID. * * This function not run if $_wp_suspend_cache_invalidation is not empty. See * wp_suspend_cache_invalidation(). * * @since 2.0.0 * * @global bool $_wp_suspend_cache_invalidation * * @param int|WP_Post $post Post ID or post object to remove from the cache. */ function clean_post_cache( $post ) { global $_wp_suspend_cache_invalidation; if ( ! empty( $_wp_suspend_cache_invalidation ) ) return; $post = get_post( $post ); if ( empty( $post ) ) return; wp_cache_delete( $post->ID, 'posts' ); wp_cache_delete( $post->ID, 'post_meta' ); clean_object_term_cache( $post->ID, $post->post_type ); wp_cache_delete( 'wp_get_archives', 'general' ); /** * Fires immediately after the given post's cache is cleaned. * * @since 2.5.0 * * @param int $post_id Post ID. * @param WP_Post $post Post object. */ do_action( 'clean_post_cache', $post->ID, $post ); if ( 'page' == $post->post_type ) { wp_cache_delete( 'all_page_ids', 'posts' ); /** * Fires immediately after the given page's cache is cleaned. * * @since 2.5.0 * * @param int $post_id Post ID. */ do_action( 'clean_page_cache', $post->ID ); } wp_cache_set( 'last_changed', microtime(), 'posts' ); } /** * Call major cache updating functions for list of Post objects. * * @since 1.5.0 * * @param array $posts Array of Post objects * @param string $post_type Optional. Post type. Default 'post'. * @param bool $update_term_cache Optional. Whether to update the term cache. Default true. * @param bool $update_meta_cache Optional. Whether to update the meta cache. Default true. */ function update_post_caches( &$posts, $post_type = 'post', $update_term_cache = true, $update_meta_cache = true ) { // No point in doing all this work if we didn't match any posts. if ( !$posts ) return; update_post_cache($posts); $post_ids = array(); foreach ( $posts as $post ) $post_ids[] = $post->ID; if ( ! $post_type ) $post_type = 'any'; if ( $update_term_cache ) { if ( is_array($post_type) ) { $ptypes = $post_type; } elseif ( 'any' == $post_type ) { $ptypes = array(); // Just use the post_types in the supplied posts. foreach ( $posts as $post ) { $ptypes[] = $post->post_type; } $ptypes = array_unique($ptypes); } else { $ptypes = array($post_type); } if ( ! empty($ptypes) ) update_object_term_cache($post_ids, $ptypes); } if ( $update_meta_cache ) update_postmeta_cache($post_ids); } /** * Updates metadata cache for list of post IDs. * * Performs SQL query to retrieve the metadata for the post IDs and updates the * metadata cache for the posts. Therefore, the functions, which call this * function, do not need to perform SQL queries on their own. * * @since 2.1.0 * * @param array $post_ids List of post IDs. * @return array|false Returns false if there is nothing to update or an array * of metadata. */ function update_postmeta_cache( $post_ids ) { return update_meta_cache('post', $post_ids); } /** * Will clean the attachment in the cache. * * Cleaning means delete from the cache. Optionally will clean the term * object cache associated with the attachment ID. * * This function will not run if $_wp_suspend_cache_invalidation is not empty. * * @since 3.0.0 * * @global bool $_wp_suspend_cache_invalidation * * @param int $id The attachment ID in the cache to clean. * @param bool $clean_terms Optional. Whether to clean terms cache. Default false. */ function clean_attachment_cache( $id, $clean_terms = false ) { global $_wp_suspend_cache_invalidation; if ( !empty($_wp_suspend_cache_invalidation) ) return; $id = (int) $id; wp_cache_delete($id, 'posts'); wp_cache_delete($id, 'post_meta'); if ( $clean_terms ) clean_object_term_cache($id, 'attachment'); /** * Fires after the given attachment's cache is cleaned. * * @since 3.0.0 * * @param int $id Attachment ID. */ do_action( 'clean_attachment_cache', $id ); } // // Hooks // /** * Hook for managing future post transitions to published. * * @since 2.3.0 * @access private * * @see wp_clear_scheduled_hook() * @global wpdb $wpdb WordPress database abstraction object. * * @param string $new_status New post status. * @param string $old_status Previous post status. * @param WP_Post $post Post object. */ function _transition_post_status( $new_status, $old_status, $post ) { global $wpdb; if ( $old_status != 'publish' && $new_status == 'publish' ) { // Reset GUID if transitioning to publish and it is empty. if ( '' == get_the_guid($post->ID) ) $wpdb->update( $wpdb->posts, array( 'guid' => get_permalink( $post->ID ) ), array( 'ID' => $post->ID ) ); /** * Fires when a post's status is transitioned from private to published. * * @since 1.5.0 * @deprecated 2.3.0 Use 'private_to_publish' instead. * * @param int $post_id Post ID. */ do_action('private_to_published', $post->ID); } // If published posts changed clear the lastpostmodified cache. if ( 'publish' == $new_status || 'publish' == $old_status) { foreach ( array( 'server', 'gmt', 'blog' ) as $timezone ) { wp_cache_delete( "lastpostmodified:$timezone", 'timeinfo' ); wp_cache_delete( "lastpostdate:$timezone", 'timeinfo' ); wp_cache_delete( "lastpostdate:$timezone:{$post->post_type}", 'timeinfo' ); } } if ( $new_status !== $old_status ) { wp_cache_delete( _count_posts_cache_key( $post->post_type ), 'counts' ); wp_cache_delete( _count_posts_cache_key( $post->post_type, 'readable' ), 'counts' ); } // Always clears the hook in case the post status bounced from future to draft. wp_clear_scheduled_hook('publish_future_post', array( $post->ID ) ); } /** * Hook used to schedule publication for a post marked for the future. * * The $post properties used and must exist are 'ID' and 'post_date_gmt'. * * @since 2.3.0 * @access private * * @param int $deprecated Not used. Can be set to null. Never implemented. Not marked * as deprecated with _deprecated_argument() as it conflicts with * wp_transition_post_status() and the default filter for * {@see _future_post_hook()}. * @param WP_Post $post Post object. */ function _future_post_hook( $deprecated, $post ) { wp_clear_scheduled_hook( 'publish_future_post', array( $post->ID ) ); wp_schedule_single_event( strtotime( get_gmt_from_date( $post->post_date ) . ' GMT') , 'publish_future_post', array( $post->ID ) ); } /** * Hook to schedule pings and enclosures when a post is published. * * Uses XMLRPC_REQUEST and WP_IMPORTING constants. * * @since 2.3.0 * @access private * * @param int $post_id The ID in the database table of the post being published. */ function _publish_post_hook( $post_id ) { if ( defined( 'XMLRPC_REQUEST' ) ) { /** * Fires when _publish_post_hook() is called during an XML-RPC request. * * @since 2.1.0 * * @param int $post_id Post ID. */ do_action( 'xmlrpc_publish_post', $post_id ); } if ( defined('WP_IMPORTING') ) return; if ( get_option('default_pingback_flag') ) add_post_meta( $post_id, '_pingme', '1' ); add_post_meta( $post_id, '_encloseme', '1' ); wp_schedule_single_event(time(), 'do_pings'); } /** * Return the post's parent's post_ID * * @since 3.1.0 * * @param int $post_ID * * @return int|false Post parent ID, otherwise false. */ function wp_get_post_parent_id( $post_ID ) { $post = get_post( $post_ID ); if ( !$post || is_wp_error( $post ) ) return false; return (int) $post->post_parent; } /** * Check the given subset of the post hierarchy for hierarchy loops. * * Prevents loops from forming and breaks those that it finds. Attached * to the 'wp_insert_post_parent' filter. * * @since 3.1.0 * * @see wp_find_hierarchy_loop() * * @param int $post_parent ID of the parent for the post we're checking. * @param int $post_ID ID of the post we're checking. * @return int The new post_parent for the post, 0 otherwise. */ function wp_check_post_hierarchy_for_loops( $post_parent, $post_ID ) { // Nothing fancy here - bail. if ( !$post_parent ) return 0; // New post can't cause a loop. if ( empty( $post_ID ) ) return $post_parent; // Can't be its own parent. if ( $post_parent == $post_ID ) return 0; // Now look for larger loops. if ( !$loop = wp_find_hierarchy_loop( 'wp_get_post_parent_id', $post_ID, $post_parent ) ) return $post_parent; // No loop // Setting $post_parent to the given value causes a loop. if ( isset( $loop[$post_ID] ) ) return 0; // There's a loop, but it doesn't contain $post_ID. Break the loop. foreach ( array_keys( $loop ) as $loop_member ) wp_update_post( array( 'ID' => $loop_member, 'post_parent' => 0 ) ); return $post_parent; } /** * Set a post thumbnail. * * @since 3.1.0 * * @param int|WP_Post $post Post ID or post object where thumbnail should be attached. * @param int $thumbnail_id Thumbnail to attach. * @return int|bool True on success, false on failure. */ function set_post_thumbnail( $post, $thumbnail_id ) { $post = get_post( $post ); $thumbnail_id = absint( $thumbnail_id ); if ( $post && $thumbnail_id && get_post( $thumbnail_id ) ) { if ( wp_get_attachment_image( $thumbnail_id, 'thumbnail' ) ) return update_post_meta( $post->ID, '_thumbnail_id', $thumbnail_id ); else return delete_post_meta( $post->ID, '_thumbnail_id' ); } return false; } /** * Remove a post thumbnail. * * @since 3.3.0 * * @param int|WP_Post $post Post ID or post object where thumbnail should be removed from. * @return bool True on success, false on failure. */ function delete_post_thumbnail( $post ) { $post = get_post( $post ); if ( $post ) return delete_post_meta( $post->ID, '_thumbnail_id' ); return false; } /** * Delete auto-drafts for new posts that are > 7 days old. * * @since 3.4.0 * * @global wpdb $wpdb WordPress database abstraction object. */ function wp_delete_auto_drafts() { global $wpdb; // Cleanup old auto-drafts more than 7 days old. $old_posts = $wpdb->get_col( "SELECT ID FROM $wpdb->posts WHERE post_status = 'auto-draft' AND DATE_SUB( NOW(), INTERVAL 7 DAY ) > post_date" ); foreach ( (array) $old_posts as $delete ) { // Force delete. wp_delete_post( $delete, true ); } } /** * Update the custom taxonomies' term counts when a post's status is changed. * * For example, default posts term counts (for custom taxonomies) don't include * private / draft posts. * * @since 3.3.0 * @access private * * @param string $new_status New post status. * @param string $old_status Old post status. * @param WP_Post $post Post object. */ function _update_term_count_on_transition_post_status( $new_status, $old_status, $post ) { // Update counts for the post's terms. foreach ( (array) get_object_taxonomies( $post->post_type ) as $taxonomy ) { $tt_ids = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'tt_ids' ) ); wp_update_term_count( $tt_ids, $taxonomy ); } } /** * Adds any posts from the given ids to the cache that do not already exist in cache * * @since 3.4.0 * @access private * * @see update_post_caches() * * @global wpdb $wpdb WordPress database abstraction object. * * @param array $ids ID list. * @param bool $update_term_cache Optional. Whether to update the term cache. Default true. * @param bool $update_meta_cache Optional. Whether to update the meta cache. Default true. */ function _prime_post_caches( $ids, $update_term_cache = true, $update_meta_cache = true ) { global $wpdb; $non_cached_ids = _get_non_cached_ids( $ids, 'posts' ); if ( !empty( $non_cached_ids ) ) { $fresh_posts = $wpdb->get_results( sprintf( "SELECT $wpdb->posts.* FROM $wpdb->posts WHERE ID IN (%s)", join( ",", $non_cached_ids ) ) ); update_post_caches( $fresh_posts, 'any', $update_term_cache, $update_meta_cache ); } }