Memcached::casByKey
PHP function
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(PECL memcached >= 0.1.0)
Compare and swap an item on a specific server
Description
Memcached::casByKey(string|int|float $cas_token, string $server_key, string $key, mixed $value, int $expiration = 0): bool
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.
Parameters
cas_tokenUnique value associated with the existing item. Generated by memcache.
server_keyServer_key
keyKey
valueValue
expirationExpiration
Return Values
Success 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.
See Also
Memcached::cas