The right way to check url paramater using isset

Question

i was create a script to active user registration but there's a problem with my isset logic. and here's my code:

if (!isset($_GET['x']) || !isset($_GET['y'])) {


            echo "Check your email for activation code";

        }else{
        //collect values from the url
            $memberID = trim($_GET['x']);
            $active = trim($_GET['y']);


            if(is_numeric($memberID) && !empty($active)){

                $stmt = $pdo->prepare("UPDATE users SET active = 'Yes'
    WHERE id = :memberID AND active = :active");

                $stmt->execute(array(
                    ':memberID' => $memberID,
                    ':active' => $active
                ));

                //if the row was updated redirect the user
                if($stmt->rowCount() == 1){

                    //redirect to login page
                    header('Location: login.php?action=active');
                    exit;

                } else {

                    echo "Your account could not be activated.";

                }

            }
        }

but if i give code like this in url active.php?x=&y=9b4f0 or active.php?x=777&y= it show nothing. how can i handle this situation?

Answer 1

if (!isset($_GET['x']) || !isset($_GET['y'])) {

Should work.