I started a new RPG project coded in PHP.
The homepage is here:
ezrpg - Google Code

The RPG is called ezRPG and it's meant to be used as base code for anybody who wants to create a game.
There are no releases yet, but the latest code can be found in the SVN repository.

It will feature a complete admin panel so you won't need to know any PHP to run the game, but that's in the future ;) For now, there's a very basic game system that you can all use!

btw, the forum is here: Browser-Based Game Zone Forums - Index
If you have any questions, or bugs to report, or just want to learn to code games in PHP, you can visit the forums! :)