如何使用立即购买按钮将会话变量传递给贝宝 [英] How do I pass session variables to paypal with buy now button

问题描述

当我的用户使用保存在会话变量中的用户名和用户 ID 登录时，他们可以使用贝宝进行捐赠.使用简单的立即购买按钮，您可以在贝宝上轻松生成.

When my users are logged in with their username and userid saved in the session variable they can donate using paypal. With the simple buy now button that you can simply generate at paypal.

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

当他们付款成功时，他们将连同所有 _POST 数据一起发送到我的 confirm_payment.php.我可以使用他们支付的邮件并将其与我的用户数据库进行比较以找到正确的用户，但我无法确定他们对 paypal 和我的网站使用相同的电子邮件.

When they payment is successful they are sent to my confirm_payment.php with all the _POST data. I can use the mail they paid with and compare this with my user database to find the correct user, but I can't be sure that they use the same email for paypal and my site.

我需要将 $_SESSION['username'] 传递给 paypal，以便我可以使用此信息自动为我的用户提供捐赠者身份.我可以添加如下内容:

I need to pass the $_SESSION['username'] to paypal so I can use this information to give my users donator status automatically. Can I add something like:

<input type="hidden" name="custom" value="custom variable">

到我的按钮代码?以下是有关可用变量的更多信息 paypal 信息

to my button code? Here is more info on the variables avaliable paypal info

推荐答案

是的，你可以这样添加，这是正确的方法，当 paypal ping 你回到 IPNHandler 然后你会得到这个 custom 隐藏字段的值在查询字符串中具有相同的名称.

yes you can add like this, this is the correct way, and when paypal pings you back on IPNHandler then you'll get the value of this custom hidden field in querystring with the same name.

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