(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.
A chave identificando o servidor aonde guardar o valor.
The key of the item to prepend the data to.
The string to prepend.
Retorna TRUE em caso de sucesso ou FALSE em falhas. The Memcached::getResultCode will return Memcached::RES_NOTSTORED if the key does not exist.