array ( 'at' => NULL, 'exp' => NULL, 'i' => NULL, )auth https://www.facebook.com/v3.1/dialog/oauth?client_id=171701286220852&redirect_uri=https://apps.facebook.com/football_management&state=f2dcaa009fd1d89bae56f09c866467c9&sdk=php-sdk-4.0.16&scope=