Become Zend Certified

Prepare for the ZCE exam using our quizzes (web or iPad/iPhone). More info...

When you're ready get 7.5% off your exam voucher using voucher CJQNOV23 at the Zend Store


(PECL memcached >= 0.1.0)

Memcached::prependByKeyPrepend data to an existing item on a specific server


public bool Memcached::prependByKey ( string $server_key , string $key , string $value )

Memcached::prependByKey() is functionally equivalent to Memcached::prepend, except that the free-form server_key can be used to map the key to a specific server.



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.


The key of the item to prepend the data to.


The string to prepend.

Return Values

Returns TRUE on success or FALSE on failure. The Memcached::getResultCode will return Memcached::RES_NOTSTORED if the key does not exist.

See Also

PHP Manual