facebook->getUser() returning 0

Question

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

Answer 1

Change this

$loginUrl = $facebook->getLoginUrl(array ( 
        'display' => 'popup',
        'redirect_uri' => 'http://localhost/demo'
        ));

to

$loginUrl = $facebook->getLoginUrl(array ( 
        'display' => 'popup',
        'redirect_uri' => 'http://localhost/demo/index.php'
        ));

And see if this works !!