Avoid a PHP notice when trying to access the `post_parent` property of hierarchical post type nav menu items.

FIxes #34446 git-svn-id: https://develop.svn.wordpress.org/trunk@35876 602fd350-edb4-49c9-b593-d223f7449a82
2015-12-12 01:05:27 +00:00 · 2015-12-12 01:05:27 +00:00 · 9c354378ff
parent 4dfb95179a
commit 9c354378ff
1 changed files with 1 additions and 1 deletions
--- a/src/wp-includes/class-wp-walker.php
+++ b/src/wp-includes/class-wp-walker.php
@ -215,7 +215,7 @@ class Walker {
 		$top_level_elements = array();
 		$children_elements  = array();
 		foreach ( $elements as $e) {
-			if ( 0 == $e->$parent_field )
+			if ( empty( $e->$parent_field ) )
 				$top_level_elements[] = $e;
 			else
 				$children_elements[ $e->$parent_field ][] = $e;