<?php

session_start();
require 'conf.php';
$co = new Paydunya_Checkout_Invoice();
$total_amount = 0;
foreach ($_SESSION["cart"] as $product) {
    $co->addItem($product['name'], $product['quantity'], $product['unit_price'], $product['total_price']);
    $total_amount += $product['total_price'];
}
$co->setTotalAmount($total_amount);
if ($co->create()) {
    header("Location: " . $co->getInvoiceUrl());
} else {
    echo $co->response_text;
}