(PECL memcached >= 0.1.0)
Memcached::getByKey — Retrieve an item from a specific server
Memcached::getByKey() is functionally equivalent to Memcached::get, except that the free-form server_key can be used to map the key to a specific server.
The key identifying the server to fetch the item from.
The key of the item to fetch.
Read-through caching callback or NULL
The variable to store the CAS token in.
Returns the value stored in the cache or FALSE otherwise. The Memcached::getResultCode will return Memcached::RES_NOTFOUND if the key does not exist.