i develop a php-site with user-accounts. to register easier i want to offer the user to (alternativly) log in via they´re google-account (like here on stackoverflow).
how to connect the google-account with my site?
Sign in with Google account using OAuth2.0 which is clearly explained
http://www.idiotminds.com/sign-in-with-google-account-using-oauth2-0/
Citizen SP
A system to quick login with Google account using OpenID authentication: http://www.9lessons.info/2011/07/login-with-google-account.html
While not really covering Google auth, I've found this article very useful when building openid authentication for my website.
来源：https://stackoverflow.com/questions/7709992/using-google-account-to-log-in