PHP support in Google App Engine!

3 days ago, on October 8, Google announced PHP support in App Engine for all users. Previously, it was available only to a limited number of persons for testing.
There are some limitations in the API, but, in general, popular applications work!

So, exactly supported:

• phpMyAdmin
• Drupal
• phpBB
• Wordpress

Framework:

• Laravel
• Silex
• Codeigniter

Also available are APIs for interacting with Google Drive and Google+, Google Storage, App Engine Task Queues and App Engine Modules.