I have a form with a field for a bonus code that gives you a $20 discount on your order.

if($promocode == 'secretcode') {;
$discount=20;
} else {
$discount=0;
};

Then I just have this to calculate the discount:
$finaltotal = $total - $discount;

So this subtracts 20 from my total but what if I wanted to make the discount 20% of the total instead of a flat $20 discount?

Do I need to create another variable something like:
$percentage = .20;

if($promocode == 'secretcode') {;
$discount= $percentage * $total;
} else {
$discount=0;
};

That didn't work so any tips appreciated.

thanks!!

what do you mean it didn't work? did it give an error if so what is it?

i think it should be

$discount= $total * $percentage;

In the first working example it shows a discount of 20.
In the second example when it shows a discount of 0 but no errors.

this should work

$discount= $total * $percentage;

this will give you 0 $discount= $percentage * $total; your doing .20 * 'total' your doing it backwards

That worked, I was just calculating the discount before the total on the form so it was returning 0.

Thanks!!