Just spent a few hours writing two php extensions. One is a libgtop extension which is pretty boring but useful, and the other was fun but useless - I wrote a php xwindows extension. It doesn't do much more than bring up a window and a few other things - which is a whole lot of XWindow code for so little action. I modeled it as much after the XWindow libs as I could. Still have more work to do, though. I am going out of town for a few days so I will finish it and release it when I get back.