(PECL memcached >= 0.1.0)
Memcached::appendByKey — Append data to an existing item on a specific server
Memcached::appendByKey() is functionally equivalent to Memcached::append, 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.
A chave sobre a qual guardar o valor.
The string to append.
Retorna TRUE em caso de sucesso ou FALSE em falhas. The Memcached::getResultCode will return Memcached::RES_NOTSTORED if the key does not exist.