Php 如何在paypal IPN中获取商品号？

这是我使用沙箱完成购物车付款后，paypal的一个示例响应

Array
(
    [address_city] => San Jose
    [address_country] => United States
    [address_country_code] => US
    [address_name] => Test User
    [address_state] => CA
    [address_status] => confirmed
    [address_street] => 1 Main St
    [address_zip] => 95131
    [business] => test_biz@gmail.com
    [charset] => windows-1252
    [custom] => 
    [first_name] => Test
    [form_charset] => UTF-8
    [item_name1] => iPod Touch
    [item_name2] => Giant Hamburger, the world's biggest
    [item_number1] => 2
    [item_number2] => 1
    [last_name] => User
    [mc_currency] => USD
    [mc_fee] => 0.79
    [mc_gross] => 17.00
    [mc_gross_1] => 7.00
    [mc_gross_2] => 10.00
    [mc_handling] => 0.00
    [mc_handling1] => 0.00
    [mc_handling2] => 0.00
    [mc_shipping] => 2.00
    [mc_shipping1] => 2.00
    [mc_shipping2] => 0.00
    [merchant_return_link] => click here
    [notify_version] => 3.4
    [num_cart_items] => 2
    [payer_email] => test_per@gmail.com
    [payer_id] => TRCLJTHLNCJ7Q
    [payer_status] => verified
    [payment_date] => 23:14:45 Jan 02, 2012 PST
    [payment_fee] => 0.79
    [payment_gross] => 17.00
    [payment_status] => Completed
    [payment_type] => instant
    [protection_eligibility] => Eligible
    [quantity1] => 1
    [quantity2] => 1
    [receiver_email] => test_biz@gmail.com
    [receiver_id] => 74PV23B8KSK84
    [residence_country] => US
    [tax] => 0.00
    [tax1] => 0.00
    [tax2] => 0.00
    [test_ipn] => 1
    [transaction_subject] => Shopping CartiPod TouchGiant Hamburger, the world's biggest
    [txn_id] => 4BK63214AG342352Y
    [txn_type] => cart
    [verify_sign] => A0Jk1FY.7aHd-VRk44a4grBP7kE.A0Azn34Obs6QiSJKuCvAWSWyItkH
)

如您所见，有项目_name1和项目_name2如何获取这些项目的值，比如说，我已经支付了10个项目？。这就像从项目1到项目10一样

我通过PHP代码生成了项目编号，如下所示

<?php
  $i = 1;
  foreach($_SESSION['cart'] as $id => $qty):
  $product = find_product($id);
?>

<input type="hidden" name="item_name_<?php echo $i; ?>" value="<?php echo $product['ProductDescription']; ?>">
<input type="hidden" name="item_number_<?php echo $i; ?>" value="<?php echo $product['ProductID']; ?>">
<input type="hidden" name="amount_<?php echo $i; ?>" value="<?php echo $product['ProductOverridePrice']; ?>">
<input type="hidden" name="quantity_<?php echo $i; ?>" value="<?php echo $qty; ?>">

<?php
  $i++;
  endforeach;
?>

不过，您也有
[num\u cart\u items]=2
。
所以只要做一个循环

for ($i = 1; $i <= $_POST['num_cart_items']; $i++) {
   $name = $_POST['item_name' . $i];
   $number = $_POST['item_number' . $i];
   $quantity = $_POST['quantity' . $i];
   //etc...

   $query = "INSERT INTO payments (product_name, product_id, product_quantity)
             VALUES ('" . mysql_real_escape_string($name) . "', '" . mysql_real_escape_string($number) . "', '" . mysql_real_escape_string($quantity) . "')";
   mysql_query($query);
}

for（$i=1；$i）一个小警告：PayPal IPN模拟器不提供
num\u cart\u items
参数。我想我会提到，万一有人用它进行测试。如何以PayPal按钮的形式发送多个项目在PHP中使用
进行连接。