Whenever I try to login a prompt opens asking for the basic permissions, after that its being redirected to my redirect_uri with an URL
=\">http://loc
If User is logged in and still getting $user = 0 I faced this issue on different occasions but SDK issue is not happening to everyone. So I'm not sure what goes wrong here. But I dig in to it little bit and found solution as mentioned below.
SOLUTION : This worked for me after trying for many solutions for this issue.
In base_facebook.php file, find the makeRequest() method and check for following Line.
$opts = self::$CURL_OPTS;
Immediately following it, add this line
$opts[CURLOPT_SSL_VERIFYPEER] = false;
More details can be found here - http://net.tutsplus.com/tutorials/php/how-to-authenticate-your-users-with-facebook-connect/