Tool Buttons with PHP Mapscript

[Bill Thoen]

Are there any examples of creating a tool button interface based on PHP 
Mapscript? If this is possible, I'd like to see a simple example that 
implements a box-drawing Zoom In tool. Or is this too much for PHP? My 
other option would be to try and figure out how this is done in 
MapSurfer using JavaScript, but I know that route will take me a while 
to learn. I'm hoping there may be something simple out there that 
doesn't require mastery of two or more new languages.

TIA,
- Bill Thoen