Paypal订阅“自定义”变量问题（Sandbox）

Question

因此，我已经从他们的按钮模板创建者创建了一个贝宝按钮，我需要向他们发送一个包含用户ID的自定义变量。

因此，我可以使用它进一步识别用户并更新其特定记录

但是，贝宝给出的按钮模板是 ：

                    <form action="https://www.sandbox.paypal.com/cgi-bin/webscr" method="post" target="_top">
                    <input type="hidden" name="cmd" value="_s-xclick">
                    <input type="hidden" name="hosted_button_id" value="CVWJZN5AALBVJ">
                    <input type="image" src="https://www.sandbox.paypal.com/en_US/GB/i/btn/btn_subscribeCC_LG.gif" border="0" name="submit" alt="PayPal – The safer, easier way to pay online.">
                    <img alt="" border="0" src="https://www.sandbox.paypal.com/en_GB/i/scr/pixel.gif" width="1" height="1">
                    </form>

我将其更改为：

 <form action="https://www.sandbox.paypal.com/cgi-bin/webscr" method="post" target="_top">
                    <input type="hidden" name="custom" value="<?php echo $id; ?>">
                    <input type="hidden" name="cmd" value="_s-xclick">
                    <input type="hidden" name="hosted_button_id" value="CVWJZN5AALBVJ">
                    <input type="image" src="https://www.sandbox.paypal.com/en_US/GB/i/btn/btn_subscribeCC_LG.gif" border="0" name="submit" alt="PayPal – The safer, easier way to pay online.">
                    <img alt="" border="0" src="https://www.sandbox.paypal.com/en_GB/i/scr/pixel.gif" width="1" height="1">
                    </form>

本质上只是添加这一行

 <input type="hidden" name="custom" value="<?php echo $id; ?>">

但是当我的IPN被调用时，我做了一个var dump并且自定义变量没有和其他post变量一起发送

这是我通过订阅付款时收到的数据（来自var dump）

Array
(
    [txn_type] => subscr_signup
    [subscr_id] => I-TUUWHD0V6T4Y
    [last_name] => buyer
    [residence_country] => GB
    [mc_currency] => GBP
    [item_name] => premium membership
    [business] => dddd-facilitator@hotmail.com
    [recurring] => 1
    [address_street] => 1 Main Terrace
    [verify_sign] => AStwKS3.L4rNUPfkl7TOO9eahVmAABKWlAKqXwDrHAOGmGfwPvaWdtSg
    [payer_status] => verified
    [test_ipn] => 1
    [payer_email] =>dddd-buyer@hotmail.com
    [address_status] => confirmed
    [first_name] => test
    [receiver_email] => dddd-facilitator@hotmail.com
    [address_country_code] => GB
    [payer_id] => 7RUAE8WJDD4V2
    [address_city] => Wolverhampton
    [reattempt] => 1
    [address_state] => West Midlands
    [subscr_date] => 12:42:12 Oct 26, 2015 PDT
    [btn_id] => 3228524
    [address_zip] => W12 4LQ
    [charset] => windows-1252
    [notify_version] => 3.8
    [period3] => 1 M
    [address_country] => United Kingdom
    [mc_amount3] => 10.00
    [address_name] => test buyer
    [ipn_track_id] => 21e04b9a73c5
)

我想看[custom] => "usersid"指针吗？

Answer 1

问题是数据库中的ID列用大写字母表示：

我有

$id = $row['id'];

什么时候应该

$id = $row['ID'];

Answer 2

问题是您使用的是由Paypal生成的按钮（ID为CVWJZN5AALBVJ）！ 此按钮提交您在贝宝管理中添加为参数的内容，而不是您在按钮form中添加的参数 。 您必须使用自定义表单来提交以下示例：

<form method="post" name="checkout-form" action="https://www.paypal.com/cgi-bin/webscr">
<input type="hidden" name="cmd" value="_xclick">
<input type="hidden" name="business" value="your@paypal_email.com">
<input type="hidden" name="item_name" value="Product Name>
<input type="hidden" name="amount" value="22" >
<input type="hidden" name="item_number" value="65">
<input type="hidden" name="custom" value="YOUR PRODUCT ID OR SOME CUSTOM CODE">
<input type="hidden" name="currency_code" value="USD">
<input type="hidden" name="quantity" value="1">
<input type="hidden" name="no_shipping" value="1">
<input type="hidden" name="return" value="http://zoomthe.me/paypalipn/paypal_ipn.php">
<input type="hidden" name="cancel_return" value="http://zoomthe.me/paypal_cancel">
<input type="hidden" name="cbt" value="Product Description">
<input type="hidden" name="rm" value="2">
<input type="hidden" name="notify_url" value="http://zoomthe.me/your_listener_ipn_file.php">
</form>