I was able to deploy a test app without doing anything tricky:
Create a new php APP on AWS US East infrastruture from the appfog console
Download the latest Yii tarball and extract it to a FOLDER
Create test application:
$ cd FOLDER/framework $ ./yiic webapp ../testdrive
Push the changes:
$ af update APP Uploading Application: Checking for available resources: OK Processing resources: OK Packing application: OK Uploading (71K): OK Push Status: OK Stopping Application 'APP': OK Staging Application 'APP': OK Starting Application 'APP': OK
Open http://APP.aws.af.cm/testdrive/ in browser:
Welcome to My Web Application Congratulations! You have successfully created your Yii application.