Does C9 Support Google App Engine PHP?

php
gcp

#1

Back in January the Google App Engine connection was announced.
https://c9.io/blog/build-apps-for-google-cloud-platform-on-cloud9/
It included the below statement:
While we are offering support for App Engine Java-based applications, over the next few weeks, we will be adding support for additional programming languages and features.

However, C9 doesn’t appear to support PHP with Google App Engine.
Is that correct?

Assuming that is true, Since C9 is now owned by Amazon, should we expect this to never show up?