get_bookmark( int|stdClass $bookmark, string $output = OBJECT, string $filter = 'raw' ): array|object|null

24function get_bookmark( $bookmark, $output = OBJECT, $filter = 'raw' ) {25	global $wpdb;26 27	if ( empty( $bookmark ) ) {28		if ( isset( $GLOBALS['link'] ) ) {29			$_bookmark = & $GLOBALS['link'];30		} else {31			$_bookmark = null;32		}33	} elseif ( is_object( $bookmark ) ) {34		wp_cache_add( $bookmark->link_id, $bookmark, 'bookmark' );35		$_bookmark = $bookmark;36	} else {37		if ( isset( $GLOBALS['link'] ) && ( $GLOBALS['link']->link_id === $bookmark ) ) {38			$_bookmark = & $GLOBALS['link'];39		} else {40			$_bookmark = wp_cache_get( $bookmark, 'bookmark' );41			if ( ! $_bookmark ) {42				$_bookmark = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $wpdb->links WHERE link_id = %d LIMIT 1", $bookmark ) );43				if ( $_bookmark ) {44					$_bookmark->link_category = array_unique( wp_get_object_terms( $_bookmark->link_id, 'link_category', array( 'fields' => 'ids' ) ) );45					wp_cache_add( $_bookmark->link_id, $_bookmark, 'bookmark' );46				}47			}48		}49	}50 51	if ( ! $_bookmark ) {52		return $_bookmark;53	}54 55	$_bookmark = sanitize_bookmark( $_bookmark, $filter );56 57	if ( OBJECT === $output ) {58		return $_bookmark;59	} elseif ( ARRAY_A === $output ) {60		return get_object_vars( $_bookmark );61	} elseif ( ARRAY_N === $output ) {62		return array_values( get_object_vars( $_bookmark ) );63	} else {64		return $_bookmark;65	}66}