In your auth.php, I would suggest on line 7 in your if statement using:
if(isset($_GET['code']))instead of:
if($_GET['code'])because it will throw:
Notice: Undefined index: code in [path/to/php/file] on line [num]
In your auth.php, I would suggest on line 7 in your if statement using:
if(isset($_GET['code']))instead of:
if($_GET['code'])because it will throw:
Notice: Undefined index: code in [path/to/php/file] on line [num]