(PECL memcached >= 0.1.0)
Memcached::getDelayedByKey — Request multiple items from a specific server
Memcached::getDelayedByKey() is functionally equivalent to Memcached::getDelayed, except that the free-form server_key can be used to map the keys to a specific server.
The key identifying the server to store the value on.
Array of keys to request.
Whether to request CAS token values also.
The result callback or NULL.
Retorna TRUE em caso de sucesso ou FALSE em falhas. Use Memcached::getResultCode if necessary.