(PECL memcached >= 0.1.0)
Memcached::deleteByKey — Delete an item from a specific server
Memcached::deleteByKey() is functionally equivalent to Memcached::delete, 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 to be deleted.
The amount of time the server will wait to delete the item.
Retorna TRUE em caso de sucesso ou FALSE em falhas. The Memcached::getResultCode will return Memcached::RES_NOTFOUND if the key does not exist.