Memcached
PHP Manual

Memcached::casByKey

(PECL memcached >= 0.1.0)

Memcached::casByKeyCompare and swap an item on a specific server

Descrição

public bool Memcached::casByKey ( double $cas_token , string $server_key , string $key , mixed $value [, int $expiration ] )

Memcached::casByKey() is functionally equivalent to Memcached::cas, except that the free-form server_key can be used to map the key to a specific server. This is useful if you need to keep a bunch of related keys on a certain server.

Parâmetros

cas_token

Unique value associated with the existing item. Generated by memcache.

server_key

The key identifying the server to store the value on.

key

The key under which to store the value.

value

The value to store.

expiration

The expiration time, defaults to 0. See Expiration Times for more info.

Valor Retornado

Retorna TRUE em caso de sucesso ou FALSE em falhas. The Memcached::getResultCode will return Memcached::RES_DATA_EXISTS if the item you are trying to store has been modified since you last fetched it.

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Memcached
PHP Manual