Check if key exists in memcache cluster using PHP

[wyciorex]

I'm debugging the caching layer of a PHP application. It uses a cluster of memcache servers to cache values. I want to verify that a specific object gets purged correctly.My idea was to connect to the right memcache server with telnet and check manually if the key exists.I know the key that is passed to \[code\]Memcache::set\[/code\], but not which server to connect to. How do I know on which memcache server the data gets stored?