How to integrate PHP with my homegrown server

Hi, as an experiment I have a simple Java based server that listens on port 80 and can serve files just fine. I'd like to extend it to support PHP but am looking for guidance on how to do that. Can someone point me to instructions? My first attempt was to just call the php.exe command line interface to launch the php interpreter, capture the html and send it back to the caller. That works well, but I can't seem to figure out how to deal with parameters. For example, if the url would be this on the server:

    http://some.server.com/mypage.php?parm1=Hello&parm2=Goodbye

and in mypage.php I do something like this:

    $echo $_GET["parm1"];

then how do I test this via the PHP command line? If the command line doesn't have a way to cause $_GET to be populated, then what other way of invoking PHP could I use? -- Steve