(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.
The key identifying the server to store the value on.
The key to be deleted.
The amount of time the server will wait to delete the item.
Returns TRUE on success or FALSE on failure. The Memcached::getResultCode will return Memcached::RES_NOTFOUND if the key does not exist.