Memcached::casMemcached::casByKey
(PECL memcached >= 0.1.0)
Memcached::casByKey — Compare and swap an item on a specific server
Description
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_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.
Return Values
Returns TRUE on success or FALSE on failure. 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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