Doesn't work with multiple servers

[MikeTodd]

Because of line 249 (see below), this essentially just uses whatever server was added last with addServer(), instead of actually splitting between servers when there are multiple servers added.

$this->socket = $rs;

[fwolf]

Yes, but this is only a simulator, not real client.

To make it work like real memcached client, more work need to do with multiple server, that beyond my purpose, and got no spare time :-(.