(PECL memcached >= 0.1.0)
Memcached::prependByKey — Prepend data to an existing item on a specific server
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 where the item is.
The key of the item to prepend the data to.
The string to prepend.
Возвращает TRUE в случае успешного завершения или FALSE в случае возникновения ошибки. The Memcached::getResultCode will return Memcached::RES_NOTSTORED if the key does not exist.