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Memcached::cas(PECL memcached >= 0.1.0) Memcached::cas — Compare and swap an item DescriptionMemcached::cas() performs a "check and set" operation, so that the item will be stored only if no other client has updated it since it was last fetched by this client. The check is done via the cas_token parameter which is a unique 64-bit value assigned to the existing item by memcache. See the documentation for Memcached::get* methods for how to obtain this token. Note that the token is represented as a double due to the limitations of PHP's integer space. Parameters
Return ValuesReturns 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. Examples
Example #1 Memcached::cas() example
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