Google Login Integration in CodeIgniter — a practical guide to CodeIgniter Google login with clear examples you can reuse in real projects.
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Short description
Use Google OAuth client credentials, redirect URI, and verify the profile email before creating/logging in the user.
OAuth high-level flow
1. Redirect user to Google consent screen
2. Google returns authorization code
3. Exchange code for tokens
4. Fetch profile email
5. Create/find local user + start session