Still can't get it to work
Jason, I do thank you for your assistance but I still can't get it to work...I said I wasn't a web developer/designer so saying "put this code on the page" doesn't really help me to know where I am putting it. I might be dumb but when told I will remember.
I've included the page again with where I think you meant the code to go (probably I am wrong) but it doesn't work for me...I got an error "Notice: Undefined index: PromoCode in C:\xampp\htdocs\jamesdoylephoto\Bookings\bookingcart.php on line 17" at one stage so I moved the code to a different location and now nothing happens when the wrong coupon is entered.