get_page_by_path( string $page_path, string $output = OBJECT, string|array $post_type = ‘page’ )

检索给定路径的页。
Retrieves a page given its path.

目录锚点：#参数#返回#源码#笔记

参数（Parameters）

返回（Return）

（WP|Post|array|null）成功时为WP|Post（WP|Post|array|null），失败时为null。

源码（Source）

/**
 * Retrieves a page given its path.
 *
 * @since 2.1.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param string       $page_path Page path.
 * @param string       $output    Optional. Output type. Accepts OBJECT, ARRAY_N, or ARRAY_A.
 *                                Default OBJECT.
 * @param string|array $post_type Optional. Post type or array of post types. Default 'page'.
 * @return WP_Post|array|void WP_Post on success.
 */
function get_page_by_path( $page_path, $output = OBJECT, $post_type = 'page' ) {
	global $wpdb;

	$page_path = rawurlencode(urldecode($page_path));
	$page_path = str_replace('%2F', '/', $page_path);
	$page_path = str_replace('%20', ' ', $page_path);
	$parts = explode( '/', trim( $page_path, '/' ) );
	$parts = esc_sql( $parts );
	$parts = array_map( 'sanitize_title_for_query', $parts );

	$in_string = "'" . implode( "','", $parts ) . "'";

	if ( is_array( $post_type ) ) {
		$post_types = $post_type;
	} else {
		$post_types = array( $post_type, 'attachment' );
	}

	$post_types = esc_sql( $post_types );
	$post_type_in_string = "'" . implode( "','", $post_types ) . "'";
	$sql = "
		SELECT ID, post_name, post_parent, post_type
		FROM $wpdb->posts
		WHERE post_name IN ($in_string)
		AND post_type IN ($post_type_in_string)
	";

	$pages = $wpdb->get_results( $sql, OBJECT_K );

	$revparts = array_reverse( $parts );

	$foundid = 0;
	foreach ( (array) $pages as $page ) {
		if ( $page->post_name == $revparts[0] ) {
			$count = 0;
			$p = $page;
			while ( $p->post_parent != 0 && isset( $pages[ $p->post_parent ] ) ) {
				$count++;
				$parent = $pages[ $p->post_parent ];
				if ( ! isset( $revparts[ $count ] ) || $parent->post_name != $revparts[ $count ] )
					break;
				$p = $parent;
			}

			if ( $p->post_parent == 0 && $count+1 == count( $revparts ) && $p->post_name == $revparts[ $count ] ) {
				$foundid = $page->ID;
				if ( $page->post_type == $post_type )
					break;
			}
		}
	}

	if ( $foundid ) {
		return get_post( $foundid, $output );
	}
}

笔记（Notes）

页面路径
如果未指定post_类型，则它将同时搜索页面和附件。