damien point this out to me today - there is a PHP developer by the name of Jon Parise (one of the Horde Team, leading dev for IMP) that has taken it upon himself to make a Python extension for PHP. Right now, the project is just in it's infancy, but it looks very promising. Here's what he has to say about it:

In short, this extensions allows the Python interpretter to be embedded inside of PHP (think of PHP as the parent language with Python as its child). This allows native Python objects to be instantiated and manipulated from within PHP. There is also initial support for accessing PHP functions and data from within the embedded Python environment.

If you'd like to get more information, visit the PiP site or just get the zip file.