/** * Return an array of stored cache ids which match any given tags * * In case of multiple tags, a logical OR is made between tags * * @param array $tags array of tags * @return array array of any matching cache ids (string) */ public function getIdsMatchingAnyTags($tags = array()) { if ($tags) { return (array) $this->_redis->sUnion($this->_preprocessTagIds($tags)); } return array(); }