I’m having trouble with a PHP implementation of a Google Drive editor integration. Every time I try to authorize the application, it gets stuck in an endless redirect loop back to the authentication page. The app never actually gets the proper access permissions it needs.
I’ve been working on this for hours and can’t figure out what’s causing the authorization flow to fail. The redirect keeps happening instead of completing the auth process successfully.
Has anyone else run into this kind of authorization problem with Google Drive API in PHP? What could be causing the redirect loop during the permission grant step?
Had this exact problem last month with a Drive integration. It’s a session management issue during OAuth. PHP loses track of the authorization state between requests, so Google thinks each callback is a new auth attempt. Make sure you start your session before the OAuth flow and check that session cookies are set up right for your domain. Also verify you’re actually exchanging the auth code for access tokens in your callback handler. If that token exchange fails silently, you’ll just keep bouncing back to auth without knowing why.
check your php error logs first - theres probably a silent fatal error happening during the callback that’s causing the redirect loop. also make sure your app isnt caching old auth tokens somewhere, that can mess up the whole flow too.
OAuth settings are usually the culprit for Google Drive authorization loops in PHP. Make sure your redirect URI in Google Cloud Console matches exactly what you’re using in your PHP app - even trailing slashes matter here. Also check how you’re handling the state parameter. If that’s not managed properly, you’ll get stuck in redirect failures every time. I fixed mine by syncing the state with session data.