function CouponCode($couponCode)
{
    $res = "-1";
    try {
        $res = CheckCouponCode($couponCode);
        echo $res;
    } catch (Exception $e) {
        $res = "-1";
        echo $res;
    }
}
function CheckCoupon($code)
{
    $response = "-1";
    try {
        $response = CheckCouponCode($code);
        echo $response;
    } catch (Exception $e) {
        $response = "-1";
        echo $response;
    }
}