http://code.google.com/apis/accounts/docs/OpenID.html says,. OpenID User Interface 1.0 can be used,. by redirecting to google page and back to application no sample code in php,. could be found.. any idea?
Check this: http://code.google.com/apis/accounts/docs/AuthForWebApps.html and this: http://www.webapper.com/blog/index.php/2008/01/24/google-api-the-cool-way-to-login-part-1/ Here is the documentations for OAuth(I use it): http://code.google.com/apis/accounts/docs/OAuth.html