enu-item-object-id'] = $menu_item_db_id; $args['menu-item-object'] = 'custom'; } $menu_item_db_id = (int) $menu_item_db_id; // Reset invalid `menu_item_parent`. if ( (int) $args['menu-item-parent-id'] === $menu_item_db_id ) { $args['menu-item-parent-id'] = 0; } update_post_meta( $menu_item_db_id, '_menu_item_type', sanitize_key( $args['menu-item-type'] ) ); update_post_meta( $menu_item_db_id, '_menu_item_menu_item_parent', (string) ( (int) $args['menu-item-parent-id'] ) ); update_post_meta( $menu_item_db_id, '_menu_item_object_id', (string) ( (int) $args['menu-item-object-id'] ) ); update_post_meta( $menu_item_db_id, '_menu_item_object', sanitize_key( $args['menu-item-object'] ) ); update_post_meta( $menu_item_db_id, '_menu_item_target', sanitize_key( $args['menu-item-target'] ) ); $args['menu-item-classes'] = array_map( 'sanitize_html_class', explode( ' ', $args['menu-item-classes'] ) ); $args['menu-item-xfn'] = implode( ' ', array_map( 'sanitize_html_class', explode( ' ', $args['menu-item-xfn'] ) ) ); update_post_meta( $menu_item_db_id, '_menu_item_classes', $args['menu-item-classes'] ); update_post_meta( $menu_item_db_id, '_menu_item_xfn', $args['menu-item-xfn'] ); update_post_meta( $menu_item_db_id, '_menu_item_url', sanitize_url( $args['menu-item-url'] ) ); if ( 0 == $menu_id ) { update_post_meta( $menu_item_db_id, '_menu_item_orphaned', (string) time() ); } elseif ( get_post_meta( $menu_item_db_id, '_menu_item_orphaned' ) ) { delete_post_meta( $menu_item_db_id, '_menu_item_orphaned' ); } // Update existing menu item. Default is publish status. if ( $update ) { $post['ID'] = $menu_item_db_id; $post['post_status'] = ( 'draft' === $args['menu-item-status'] ) ? 'draft' : 'publish'; $update_post = wp_update_post( $post, true ); if ( is_wp_error( $update_post ) ) { return $update_post; } } /** * Fires after a navigation menu item has been updated. * * @since 3.0.0 * * @see wp_update_nav_menu_item() * * @param int $menu_id ID of the updated menu. * @param int $menu_item_db_id ID of the updated menu item. * @param array $args An array of arguments used to update a menu item. */ do_action( 'wp_update_nav_menu_item', $menu_id, $menu_item_db_id, $args ); return $menu_item_db_id; } /** * Returns all navigation menu objects. * * @since 3.0.0 * @since 4.1.0 Default value of the 'orderby' argument was changed from 'none' * to 'name'. * * @param array $args Optional. Array of arguments passed on to get_terms(). * Default empty array. * @return WP_Term[] An array of menu objects. */ function wp_get_nav_menus( $args = array() ) { $defaults = array( 'taxonomy' => 'nav_menu', 'hide_empty' => false, 'orderby' => 'name', ); $args = wp_parse_args( $args, $defaults ); /** * Filters the navigation menu objects being returned. * * @since 3.0.0 * * @see get_terms() * * @param WP_Term[] $menus An array of menu objects. * @param array $args An array of arguments used to retrieve menu objects. */ return apply_filters( 'wp_get_nav_menus', get_terms( $args ), $args ); } /** * Determines whether a menu item is valid. * * @link https://core.trac.wordpress.org/ticket/13958 * * @since 3.2.0 * @access private * * @param object $item The menu item to check. * @return bool False if invalid, otherwise true. */ function _is_valid_nav_menu_item( $item ) { return empty( $item->_invalid ); } /** * Retrieves all menu items of a navigation menu. * * Note: Most arguments passed to the `$args` parameter – save for 'output_key' – are * specifically for retrieving nav_menu_item posts from get_posts() and may only * indirectly affect the ultimate ordering and content of the resulting nav menu * items that get returned from this function. * * @since 3.0.0 * * @param int|string|WP_Term $menu Menu ID, slug, name, or object. * @param array $args { * Optional. Arguments to pass to get_posts(). * * @type string $order How to order nav menu items as queried with get_posts(). * Will be ignored if 'output' is ARRAY_A. Default 'ASC'. * @type string $orderby Field to order menu items by as retrieved from get_posts(). * Supply an orderby field via 'output_key' to affect the * output order of nav menu items. Default 'menu_order'. * @type string $post_type Menu items post type. Default 'nav_menu_item'. * @type string $post_status Menu items post status. Default 'publish'. * @type string $output How to order outputted menu items. Default ARRAY_A. * @type string $output_key Key to use for ordering the actual menu items that get * returned. Note that that is not a get_posts() argument * and will only affect output of menu items processed in * this function. Default 'menu_order'. * @type bool $nopaging Whether to retrieve all menu items (true) or paginate * (false). Default true. * @type bool $update_menu_item_cache Whether to update the menu item cache. Default true. * } * @return array|false Array of menu items, otherwise false. */ function wp_get_nav_menu_items( $menu, $args = array() ) { $menu = wp_get_nav_menu_object( $menu ); if ( ! $menu ) { return false; } if ( ! taxonomy_exists( 'nav_menu' ) ) { return false; } $defaults = array( 'order' => 'ASC', 'orderby' => 'menu_order', 'post_type' => 'nav_menu_item', 'post_status' => 'publish', 'output' => ARRAY_A, 'output_key' => 'menu_order', 'nopaging' => true, 'update_menu_item_cache' => true, 'tax_query' => array( array( 'taxonomy' => 'nav_menu', 'field' => 'term_taxonomy_id', 'terms' => $menu->term_taxonomy_id, ), ), ); $args = wp_parse_args( $args, $defaults ); if ( $menu->count > 0 ) { $items = get_posts( $args ); } else { $items = array(); } $items = array_map( 'wp_setup_nav_menu_item', $items ); if ( ! is_admin() ) { // Remove invalid items only on front end. $items = array_filter( $items, '_is_valid_nav_menu_item' ); } if ( ARRAY_A === $args['output'] ) { $items = wp_list_sort( $items, array( $args['output_key'] => 'ASC', ) ); $i = 1; foreach ( $items as $k => $item ) { $items[ $k ]->{$args['output_key']} = $i++; } } /** * Filters the navigation menu items being returned. * * @since 3.0.0 * * @param array $items An array of menu item post objects. * @param object $menu The menu object. * @param array $args An array of arguments used to retrieve menu item objects. */ return apply_filters( 'wp_get_nav_menu_items', $items, $menu, $args ); } /** * Updates post and term caches for all linked objects for a list of menu items. * * @since 6.1.0 * * @param WP_Post[] $menu_items Array of menu item post objects. */ function update_menu_item_cache( $menu_items ) { $post_ids = array(); $term_ids = array(); foreach ( $menu_items as $menu_item ) { if ( 'nav_menu_item' !== $menu_item->post_type ) { continue; } $object_id = get_post_meta( $menu_item->ID, '_menu_item_object_id', true ); $type = get_post_meta( $menu_item->ID, '_menu_item_type', true ); if ( 'post_type' === $type ) { $post_ids[] = (int) $object_id; } elseif ( 'taxonomy' === $type ) { $term_ids[] = (int) $object_id; } } if ( ! empty( $post_ids ) ) { _prime_post_caches( $post_ids, false ); } if ( ! empty( $term_ids ) ) { _prime_term_caches( $term_ids ); } } /** * Decorates a menu item object with the shared navigation menu item properties. * * Properties: * - ID: The term_id if the menu item represents a taxonomy term. * - attr_title: The title attribute of the link element for this menu item. * - classes: The array of class attribute values for the link element of this menu item. * - db_id: The DB ID of this item as a nav_menu_item object, if it exists (0 if it doesn't exist). * - description: The description of this menu item. * - menu_item_parent: The DB ID of the nav_menu_item that is this item's menu parent, if any. 0 otherwise. * - object: The type of object originally represented, such as 'category', 'post', or 'attachment'. * - object_id: The DB ID of the original object this menu item represents, e.g. ID for posts and term_id for categories. * - post_parent: The DB ID of the original object's parent object, if any (0 otherwise). * - post_title: A "no title" label if menu item represents a post that lacks a title. * - target: The target attribute of the link element for this menu item. * - title: The title of this menu item. * - type: The family of objects originally represented, such as 'post_type' or 'taxonomy'. * - type_label: The singular label used to describe this type of menu item. * - url: The URL to which this menu item points. * - xfn: The XFN relationship expressed in the link of this menu item. * - _invalid: Whether the menu item represents an object that no longer exists. * * @since 3.0.0 * * @param object $menu_item The menu item to modify. * @return object The menu item with standard menu item properties. */ function wp_setup_nav_menu_item( $menu_item ) { /** * Filters whether to short-circuit the wp_setup_nav_menu_item() output. * * Returning a non-null value from the filter will short-circuit wp_setup_nav_menu_item(), * returning that value instead. * * @since 6.3.0 * * @param object|null $modified_menu_item Modified menu item. Default null. * @param object $menu_item The menu item to modify. */ $pre_menu_item = apply_filters( 'pre_wp_setup_nav_menu_item', null, $menu_item ); if ( null !== $pre_menu_item ) { return $pre_menu_item; } if ( isset( $menu_item->post_type ) ) { if ( 'nav_menu_item' === $menu_item->post_type ) { $menu_item->db_id = (int) $menu_item->ID; $menu_item->menu_item_parent = ! isset( $menu_item->menu_item_parent ) ? get_post_meta( $menu_item->ID, '_menu_item_menu_item_parent', true ) : $menu_item->menu_item_parent; $menu_item->object_id = ! isset( $menu_item->object_id ) ? get_post_meta( $menu_item->ID, '_menu_item_object_id', true ) : $menu_item->object_id; $menu_item->object = ! isset( $menu_item->object ) ? get_post_meta( $menu_item->ID, '_menu_item_object', true ) : $menu_item->object; $menu_item->type = ! isset( $menu_item->type ) ? get_post_meta( $menu_item->ID, '_menu_item_type', true ) : $menu_item->type; if ( 'post_type' === $menu_item->type ) { $object = get_post_type_object( $menu_item->object ); if ( $object ) { $menu_item->type_label = $object->labels->singular_name; // Denote post states for special pages (only in the admin). if ( function_exists( 'get_post_states' ) ) { $menu_post = get_post( $menu_item->object_id ); $post_states = get_post_states( $menu_post ); if ( $post_states ) { $menu_item->type_label = wp_strip_all_tags( implode( ', ', $post_states ) ); } } } else { $menu_item->type_label = $menu_item->object; $menu_item->_invalid = true; } if ( 'trash' === get_post_status( $menu_item->object_id ) ) { $menu_item->_invalid = true; } $original_object = get_post( $menu_item->object_id ); if ( $original_object ) { $menu_item->url = get_permalink( $original_object->ID ); /** This filter is documented in wp-includes/post-template.php */ $original_title = apply_filters( 'the_title', $original_object->post_title, $original_object->ID ); } else { $menu_item->url = ''; $original_title = ''; $menu_item->_invalid = true; } if ( '' === $original_title ) { /* translators: %d: ID of a post. */ $original_title = sprintf( __( '#%d (no title)' ), $menu_item->object_id ); } $menu_item->title = ( '' === $menu_item->post_title ) ? $original_title : $menu_item->post_title; } elseif ( 'post_type_archive' === $menu_item->type ) { $object = get_post_type_object( $menu_item->object ); if ( $object ) { $menu_item->title = ( '' === $menu_item->post_title ) ? $object->labels->archives : $menu_item->post_title; $post_type_description = $object->description; } else { $post_type_description = ''; $menu_item->_invalid = true; } $menu_item->type_label = __( 'Post Type Archive' ); $post_content = wp_trim_words( $menu_item->post_content, 200 ); $post_type_description = ( '' === $post_content ) ? $post_type_description : $post_content; $menu_item->url = get_post_type_archive_link( $menu_item->object ); } elseif ( 'taxonomy' === $menu_item->type ) { $object = get_taxonomy( $menu_item->object ); if ( $object ) { $menu_item->type_label = $object->labels->singular_name; } else { $menu_item->type_label = $menu_item->object; $menu_item->_invalid = true; } $original_object = get_term( (int) $menu_item->object_id, $menu_item->object ); if ( $original_object && ! is_wp_error( $original_object ) ) { $menu_item->url = get_term_link( (int) $menu_item->object_id, $menu_item->object ); $original_title = $original_object->name; } else { $menu_item->url = ''; $original_title = ''; $menu_item->_invalid = true; } if ( '' === $original_title ) { /* translators: %d: ID of a term. */ $original_title = sprintf( __( '#%d (no title)' ), $menu_item->object_id ); } $menu_item->title = ( '' === $menu_item->post_title ) ? $original_title : $menu_item->post_title; } else { $menu_item->type_label = __( 'Custom Link' ); $menu_item->title = $menu_item->post_title; $menu_item->url = ! isset( $menu_item->url ) ? get_post_meta( $menu_item->ID, '_menu_item_url', true ) : $menu_item->url; } $menu_item->target = ! isset( $menu_item->target ) ? get_post_meta( $menu_item->ID, '_menu_item_target', true ) : $menu_item->target; /** * Filters a navigation menu item's title attribute. * * @since 3.0.0 * * @param string $item_title The menu item title attribute. */ $menu_item->attr_title = ! isset( $menu_item->attr_title ) ? apply_filters( 'nav_menu_attr_title', $menu_item->post_excerpt ) : $menu_item->attr_title; if ( ! isset( $menu_item->description ) ) { /** * Filters a navigation menu item's description. * * @since 3.0.0 * * @param string $description The menu item description. */ $menu_item->description = apply_filters( 'nav_menu_description', wp_trim_words( $menu_item->post_content, 200 ) ); } $menu_item->classes = ! isset( $menu_item->classes ) ? (array) get_post_meta( $menu_item->ID, '_menu_item_classes', true ) : $menu_item->classes; $menu_item->xfn = ! isset( $menu_item->xfn ) ? get_post_meta( $menu_item->ID, '_menu_item_xfn', true ) : $menu_item->xfn; } else { $menu_item->db_id = 0; $menu_item->menu_item_parent = 0; $menu_item->object_id = (int) $menu_item->ID; $menu_item->type = 'post_type'; $object = get_post_type_object( $menu_item->post_type ); $menu_item->object = $object->name; $menu_item->type_label = $object->labels->singular_name; if ( '' === $menu_item->post_title ) { /* translators: %d: ID of a post. */ $menu_item->post_title = sprintf( __( '#%d (no title)' ), $menu_item->ID ); } $menu_item->title = $menu_item->post_title; $menu_item->url = get_permalink( $menu_item->ID ); $menu_item->target = ''; /** This filter is documented in wp-includes/nav-menu.php */ $menu_item->attr_title = apply_filters( 'nav_menu_attr_title', '' ); /** This filter is documented in wp-includes/nav-menu.php */ $menu_item->description = apply_filters( 'nav_menu_description', '' ); $menu_item->classes = array(); $menu_item->xfn = ''; } } elseif ( isset( $menu_item->taxonomy ) ) { $menu_item->ID = $menu_item->term_id; $menu_item->db_id = 0; $menu_item->menu_item_parent = 0; $menu_item->object_id = (int) $menu_item->term_id; $menu_item->post_parent = (int) $menu_item->parent; $menu_item->type = 'taxonomy'; $object = get_taxonomy( $menu_item->taxonomy ); $menu_item->object = $object->name; $menu_item->type_label = $object->labels->singular_name; $menu_item->title = $menu_item->name; $menu_item->url = get_term_link( $menu_item, $menu_item->taxonomy ); $menu_item->target = ''; $menu_item->attr_title = ''; $menu_item->description = get_term_field( 'description', $menu_item->term_id, $menu_item->taxonomy ); $menu_item->classes = array(); $menu_item->xfn = ''; } /** * Filters a navigation menu item object. * * @since 3.0.0 * * @param object $menu_item The menu item object. */ return apply_filters( 'wp_setup_nav_menu_item', $menu_item ); } /** * Returns the menu items associated with a particular object. * * @since 3.0.0 * * @param int $object_id Optional. The ID of the original object. Default 0. * @param string $object_type Optional. The type of object, such as 'post_type' or 'taxonomy'. * Default 'post_type'. * @param string $taxonomy Optional. If $object_type is 'taxonomy', $taxonomy is the name * of the tax that $object_id belongs to. Default empty. * @return int[] The array of menu item IDs; empty array if none. */ function wp_get_associated_nav_menu_items( $object_id = 0, $object_type = 'post_type', $taxonomy = '' ) { $object_id = (int) $object_id; $menu_item_ids = array(); $query = new WP_Query(); $menu_items = $query->query( array( 'meta_key' => '_menu_item_object_id', 'meta_value' => $object_id, 'post_status' => 'any', 'post_type' => 'nav_menu_item', 'posts_per_page' => -1, ) ); foreach ( (array) $menu_items as $menu_item ) { if ( isset( $menu_item->ID ) && is_nav_menu_item( $menu_item->ID ) ) { $menu_item_type = get_post_meta( $menu_item->ID, '_menu_item_type', true ); if ( 'post_type' === $object_type && 'post_type' === $menu_item_type ) { $menu_item_ids[] = (int) $menu_item->ID; } elseif ( 'taxonomy' === $object_type && 'taxonomy' === $menu_item_type && get_post_meta( $menu_item->ID, '_menu_item_object', true ) == $taxonomy ) { $menu_item_ids[] = (int) $menu_item->ID; } } } return array_unique( $menu_item_ids ); } /** * Callback for handling a menu item when its original object is deleted. * * @since 3.0.0 * @access private * * @param int $object_id The ID of the original object being trashed. */ function _wp_delete_post_menu_item( $object_id ) { $object_id = (int) $object_id; $menu_item_ids = wp_get_associated_nav_menu_items( $object_id, 'post_type' ); foreach ( (array) $menu_item_ids as $menu_item_id ) { wp_delete_post( $menu_item_id, true ); } } /** * Serves as a callback for handling a menu item when its original object is deleted. * * @since 3.0.0 * @access private * * @param int $object_id The ID of the original object being trashed. * @param int $tt_id Term taxonomy ID. Unused. * @param string $taxonomy Taxonomy slug. */ function _wp_delete_tax_menu_item( $object_id, $tt_id, $taxonomy ) { $object_id = (int) $object_id; $menu_item_ids = wp_get_associated_nav_menu_items( $object_id, 'taxonomy', $taxonomy ); foreach ( (array) $menu_item_ids as $menu_item_id ) { wp_delete_post( $menu_item_id, true ); } } /** * Automatically add newly published page objects to menus with that as an option. * * @since 3.0.0 * @access private * * @param string $new_status The new status of the post object. * @param string $old_status The old status of the post object. * @param WP_Post $post The post object being transitioned from one status to another. */ function _wp_auto_add_pages_to_menu( $new_status, $old_status, $post ) { if ( 'publish' !== $new_status || 'publish' === $old_status || 'page' !== $post->post_type ) { return; } if ( ! empty( $post->post_parent ) ) { return; } $auto_add = get_option( 'nav_menu_options' ); if ( empty( $auto_add ) || ! is_array( $auto_add ) || ! isset( $auto_add['auto_add'] ) ) { return; } $auto_add = $auto_add['auto_add']; if ( empty( $auto_add ) || ! is_array( $auto_add ) ) { return; } $args = array( 'menu-item-object-id' => $post->ID, 'menu-item-object' => $post->post_type, 'menu-item-type' => 'post_type', 'menu-item-status' => 'publish', ); foreach ( $auto_add as $menu_id ) { $items = wp_get_nav_menu_items( $menu_id, array( 'post_status' => 'publish,draft' ) ); if ( ! is_array( $items ) ) { continue; } foreach ( $items as $item ) { if ( $post->ID == $item->object_id ) { continue 2; } } wp_update_nav_menu_item( $menu_id, 0, $args ); } } /** * Deletes auto-draft posts associated with the supplied changeset. * * @since 4.8.0 * @access private * * @param int $post_id Post ID for the customize_changeset. */ function _wp_delete_customize_changeset_dependent_auto_drafts( $post_id ) { $post = get_post( $post_id ); if ( ! $post || 'customize_changeset' !== $post->post_type ) { return; } $data = json_decode( $post->post_content, true ); if ( empty( $data['nav_menus_created_posts']['value'] ) ) { return; } remove_action( 'delete_post', '_wp_delete_customize_changeset_dependent_auto_drafts' ); foreach ( $data['nav_menus_created_posts']['value'] as $stub_post_id ) { if ( empty( $stub_post_id ) ) { continue; } if ( 'auto-draft' === get_post_status( $stub_post_id ) ) { wp_delete_post( $stub_post_id, true ); } elseif ( 'draft' === get_post_status( $stub_post_id ) ) { wp_trash_post( $stub_post_id ); delete_post_meta( $stub_post_id, '_customize_changeset_uuid' ); } } add_action( 'delete_post', '_wp_delete_customize_changeset_dependent_auto_drafts' ); } /** * Handles menu config after theme change. * * @access private * @since 4.9.0 */ function _wp_menus_changed() { $old_nav_menu_locations = get_option( 'theme_switch_menu_locations', array() ); $new_nav_menu_locations = get_nav_menu_locations(); $mapped_nav_menu_locations = wp_map_nav_menu_locations( $new_nav_menu_locations, $old_nav_menu_locations ); set_theme_mod( 'nav_menu_locations', $mapped_nav_menu_locations ); delete_option( 'theme_switch_menu_locations' ); } /** * Maps nav menu locations according to assignments in previously active theme. * * @since 4.9.0 * * @param array $new_nav_menu_locations New nav menu locations assignments. * @param array $old_nav_menu_locations Old nav menu locations assignments. * @return array Nav menus mapped to new nav menu locations. */ function wp_map_nav_menu_locations( $new_nav_menu_locations, $old_nav_menu_locations ) { $registered_nav_menus = get_registered_nav_menus(); $new_nav_menu_locations = array_intersect_key( $new_nav_menu_locations, $registered_nav_menus ); // Short-circuit if there are no old nav menu location assignments to map. if ( empty( $old_nav_menu_locations ) ) { return $new_nav_menu_locations; } // If old and new theme have just one location, map it and we're done. if ( 1 === count( $old_nav_menu_locations ) && 1 === count( $registered_nav_menus ) ) { $new_nav_menu_locations[ key( $registered_nav_menus ) ] = array_pop( $old_nav_menu_locations ); return $new_nav_menu_locations; } $old_locations = array_keys( $old_nav_menu_locations ); // Map locations with the same slug. foreach ( $registered_nav_menus as $location => $name ) { if ( in_array( $location, $old_locations, true ) ) { $new_nav_menu_locations[ $location ] = $old_nav_menu_locations[ $location ]; unset( $old_nav_menu_locations[ $location ] ); } } // If there are no old nav menu locations left, then we're done. if ( empty( $old_nav_menu_locations ) ) { return $new_nav_menu_locations; } /* * If old and new theme both have locations that contain phrases * from within the same group, make an educated guess and map it. */ $common_slug_groups = array( array( 'primary', 'menu-1', 'main', 'header', 'navigation', 'top' ), array( 'secondary', 'menu-2', 'footer', 'subsidiary', 'bottom' ), array( 'social' ), ); // Go through each group... foreach ( $common_slug_groups as $slug_group ) { // ...and see if any of these slugs... foreach ( $slug_group as $slug ) { // ...and any of the new menu locations... foreach ( $registered_nav_menus as $new_location => $name ) { // ...actually match! if ( is_string( $new_location ) && false === stripos( $new_location, $slug ) && false === stripos( $slug, $new_location ) ) { continue; } elseif ( is_numeric( $new_location ) && $new_location !== $slug ) { continue; } // Then see if any of the old locations... foreach ( $old_nav_menu_locations as $location => $menu_id ) { // ...and any slug in the same group... foreach ( $slug_group as $slug ) { // ... have a match as well. if ( is_string( $location ) && false === stripos( $location, $slug ) && false === stripos( $slug, $location ) ) { continue; } elseif ( is_numeric( $location ) && $location !== $slug ) { continue; } // Make sure this location wasn't mapped and removed previously. if ( ! empty( $old_nav_menu_locations[ $location ] ) ) { // We have a match that can be mapped! $new_nav_menu_locations[ $new_location ] = $old_nav_menu_locations[ $location ]; // Remove the mapped location so it can't be mapped again. unset( $old_nav_menu_locations[ $location ] ); // Go back and check the next new menu location. continue 3; } } // End foreach ( $slug_group as $slug ). } // End foreach ( $old_nav_menu_locations as $location => $menu_id ). } // End foreach foreach ( $registered_nav_menus as $new_location => $name ). } // End foreach ( $slug_group as $slug ). } // End foreach ( $common_slug_groups as $slug_group ). return $new_nav_menu_locations; } /** * Prevents menu items from being their own parent. * * Resets menu_item_parent to 0 when the parent is set to the item itself. * For use before saving `_menu_item_menu_item_parent` in nav-menus.php. * * @since 6.2.0 * @access private * * @param array $menu_item_data The menu item data array. * @return array The menu item data with reset menu_item_parent. */ function _wp_reset_invalid_menu_item_parent( $menu_item_data ) { if ( ! is_array( $menu_item_data ) ) { return $menu_item_data; } if ( ! empty( $menu_item_data['ID'] ) && ! empty( $menu_item_data['menu_item_parent'] ) && (int) $menu_item_data['ID'] === (int) $menu_item_data['menu_item_parent'] ) { $menu_item_data['menu_item_parent'] = 0; } return $menu_item_data; }