(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.
La clave que identifica el servidor en donde guardar el valor.
The key of the item to prepend the data to.
The string to prepend.
Devuelve TRUE en caso de éxito o FALSE en caso de error. The Memcached::getResultCode() will return Memcached::RES_NOTSTORED if the key does not exist.