DarkworldPHP is a version of DarkworldOnline. Users open a page in their browser, enter a nickname and start playing against the other players, which are online at the same time. The socket data transfer of DarkworldOnline is simulated by approximately 30 PHP page request per second. So you need a quite strong server. The funpic.de installation is too slow (open). The funpic.de version was removed (16.12.2016).
Ohhh, try the old non-multiplayer version!