(PECL memcached >= 0.1.0)
Memcached::getByKey — Retrieve an item from a specific server
$server_key
, string $key
[, callable $cache_cb
[, float &$cas_token
]] )
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.
server_key
la chiave che identifica il server su cui salvare il valore.
key
The key of the item to fetch.
cache_cb
Read-through caching callback or NULL
cas_token
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.