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Memcached::casByKey

(PECL memcached >= 0.1.0)

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

Açıklama

public bool Memcached::casByKey ( float $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.

Değiştirgeler

cas_token

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

server_key

The key identifying the server to store the value on or retrieve it from. Instead of hashing on the actual key for the item, we hash on the server key when deciding which memcached server to talk to. This allows related items to be grouped together on a single server for efficiency with multi operations.

key

Değerin saklanacağı anahtar.

value

Saklanacak değer.

expiration

Zaman aşımı, öntanımlı 0'dır. Daha ayrıntılı bilgi için Zaman aşımı süreleri bölümüne bakınız.

Dönen Değerler

Başarı durumunda TRUE, başarısızlık durumunda FALSE döner. 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.

Ayrıca Bakınız

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