/** * Request multiple keys without blocking from a specified server. * * @link http://www.php.net/manual/en/memcached.getdelayed.php * * @param string $server_key The key identifying the server to store the value on. * @param string|array $keys Array or string of key(s) to request. * @param string|array $groups Array or string of group(s) for the key(s). See buildKeys for more on how these are handled. * @param bool $with_cas Whether to request CAS token values also. * @param null $value_cb The result callback or NULL. * @return bool Returns TRUE on success or FALSE on failure. */ public function getDelayedByKey($server_key, $keys, $groups = 'default', $with_cas = false, $value_cb = NULL) { $derived_keys = $this->buildKeys($keys, $groups); return $this->m->getDelayedByKey($server_key, $derived_keys, $with_cas, $value_cb); }