Prevent notices by checking if the $group key isset(). See #20004.

git-svn-id: http://svn.automattic.com/wordpress/trunk@20091 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2012-03-02 21:57:03 +00:00 · 2012-03-02 21:57:03 +00:00 · c0892fbaf0
parent 085a053c22
commit c0892fbaf0
1 changed files with 1 additions and 1 deletions
--- a/wp-includes/cache.php
+++ b/wp-includes/cache.php
@ -534,7 +534,7 @@ class WP_Object_Cache {
 	 * @access private
 	 */
 	protected function _exists($key, $group) {
-		return is_array( $this->cache[$group] ) && array_key_exists( $key, $this->cache[$group] );
+		return isset( $this->cache[$group] ) && is_array( $this->cache[$group] ) && array_key_exists( $key, $this->cache[$group] );
 	}

 	/**