Ticket #33045: 33045.3.patch

wp-includes/post-template.php

@@ -1737 +1737 @@
         echo $rows;
         echo "</ul>";
 }
+
+/**
+ * Retrieve the parent post ID.
+ *
+ * @since 4.5.0
+ *
+ * @param int|WP_Post|null $post_id Optional. Post ID or post object.
+ *
+ * @return int
+ */
+function wp_get_post_parent( $post_id = null ) {
+        $post = get_post( $post_id );
+
+        if ( empty( $post ) ) {
+                return 0;
+        }
+
+        return $post->post_parent;
+}
+
+/**
+ * Whether the post has a parent post.
+ *
+ * @since 4.5.0
+ *
+ * @param int|WP_Post|null $post_id Optional. Post ID or post object.
+ *
+ * @return int
+ */
+function has_post_parent( $post_id = null ) {
+        return (bool) wp_get_post_parent( $post_id );
+}
+ No newline at end of file