Discount Coupon Modification

Keep Customers from using Discount coupons to get a zero amount total or from going below the Minimum Total Allowed in the X-Cart Admin->General Settings. The following code was added to customer/cart.php:

# Keep discount coupons away from free totals
if($cart["discount_coupon"]!="") {
if ($mode=="checkout" && !func_is_cart_empty($cart) && ($cart["total_cost"]<$config["General"]["minimal_order_amount"])) {
header ("Location: error_message.php?error_min_order");
exit;
}
} else {
if ($mode=="checkout" && !func_is_cart_empty($cart) && ($cart["sub_total"]<$config["General"]["minimal_order_amount"])) {
header ("Location: error_message.php?error_min_order");
exit;
}
}

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