require_once 'src/facebook.php'; //include the facebook php sdk $facebook = new Facebook(array( 'appId' => 'XXXXXXXXXXXXXX', //app id 'secret' => 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXX', // app secret )); $user = $facebook->getUser(); if ($user) { // check if current user is authenticated try { // Proceed knowing you have a logged in user who's authenticated. $user_profile = $facebook->api('/me'); //get current user's profile information using open graph } catch(Exception $e){} } - See more at: http://www.excellencemagentoblog.com/facebook-login-integration-website#sthash.1STZqWOe.dpuf