I have installed OmniHTTPd 2.07 on win98, and it came with PHP4 pre-installed. I configured a path to save session files in, and that works. However, I can't kill my PHP sessions with session_destroy(). The session stays active until I restart the browser.
I am able to kill the session when the script is uploaded to another (Apache) server, so I don't think there's anything wrong with my code.