This is a tiny tool that allows you to launch the built in PHP 5.4 HTTP test server with a few clicks. It allows you to select which PHP binary you want to use (in case you have multiple on your system) and the document root of the test server. Click the picture for a larger screenshot of the application running.
Keep in mind PHP-GTK 2 does not currently support PHP 5.4. On Windows it is easy to install PHP-GTK separate from PHP 5.4 however on Unix systems you're going to have to do all that nifty --prefix play if you want side by side PHP versions. The built in PHP test HTTP server is only in 5.4+ so that is why I bring that up.