I've already set up a basic SimpleCart.js web shop and am trying to implement realseanp's solution for adding a promo/discount code feature.
He uses the following JavaScript to post the user's entered promo code to discount.php:
jQuery("#promoSub").click(function Discount() {
//Interact with PHP file and check for valid Promo Code
jQuery.post("discount.php", { code: jQuery('#code').val() } , function(data) {
console.log(jQuery('#code').val());
if (data=="0" || data=='') {
console.log("Wrong Code");
}
else {
//create our cookie function if promo code is valid
//create cookie for 1 day
createCookie("promo","true",1);
var y = (data/100);
for(var i=0; i<simpleCart.items().length; i++){
var itemPrice = simpleCart.items()[i].price();
var theDiscount = itemPrice * y;
var newPrice = itemPrice - theDiscount;
simpleCart.items()[i].set("price", newPrice)
}
simpleCart.update();
//hides the promo box so people cannot add the same promo over and over
jQuery('#promoCodeDiv').hide();
}
});
});
...which echoes back a 0 or the discount percentage if the correct code has been passed:
<?php
$x = 0;
if ($_POST["code"]=="HOLIDAY") { $x = 5; };
echo $x;
?>
However, when I console.log(data) from within the success function, data appears to be the entirety of the PHP script as a string instead of the echo.
Why is this, and what modifications do I need to make to rectify it? I'm very new to PHP and having difficulty understanding why jQuery.post() isn't receiving the echo.
