I WANT PHP - A Google App Engine application
This is great. If you haven’t seen it, or seen my link to it, Google App Engine is a new service provided by Google to help scale web applications built with, as of today, Python.
Turns out a few people would like to see PHP support as well.
Source: I WANT PHP.

April 10th, 2008 at 8:36 pm
Great! I would love PHP in the Google app engine….it would be better if I could sign up too… I found another petition post too: http://forums.tizag.com/showthread.php?p=43753&posted=1#post43753
April 13th, 2008 at 5:33 pm
PHP would definitely open up the potential dev user-base. I can’t see how Google wouldn’t have thought about this. I wonder what their reasoning is for Python initially, apart from the fact they have Mr. Python on staff :).