php - Google Cloud App Engine - How to create subdomains and redirect access to another file/folder? -

i have php5.5 module created on google cloud's app engine , sql module on google cloud sql.

here php app.yaml:

application: myapp version: 1 runtime: php55 api_version: 1  handlers: - url: /.*   script: index.php 

i new google cloud, need somehow create subdomain such subdomain.myapp.com , when users try access http://subdomain.myapp.com instead of http://myapp.com, want server "give" them /subdomain/index.php file instead of /index.php file.

add both myapp.com , subdomain.myapp.com domains app in developer console, see q&a: google cloud dns: point naked domain www?

add subdomain module app serve subdomain-specific files.

add dispatch.yaml file dispatch requests based on domain respective module, see q&a: appengine subdomains modules without wildcard mapping

note: if use ssl , sessions cross-domain navigation you'll need wildcard certificate otherwise you'll encounter ssl errors.

you might able away single module (lower instance uptime usage/costs) if tolerate distinct paths in urls, http://subdomain.myapp.com/subdomain/index.php - in /index.php you'd need parse domain in requested url , if it's subdomain 1 re-direct distinct path instead. no dispatch file needed in case. not clean other solution, imho.