PayPal 捐赠按钮付款后重定向 [英] PayPal Donate Button Redirect After Payment

问题描述

我知道如何在付款后使 PayPal 捐赠按钮重定向，但我需要知道的是，您能否通过此重定向传递已支付的金额.所以它会重定向到 http://example.com/donate?amount=123，这甚至可能吗?谢谢！

看来我可以用 IPN(?) 做到这一点，我只是不知道如何使用 paypal 的 IPN，有人可以帮助我吗?(是的，我已经阅读了文档，它们令人困惑)

解决方案

是的，有可能，就像这样:

<!-- 您设置贝宝按钮的地方:--><input type="hidden" name="return" value="http://example.com/donate?amount=<?php echo $amount ?>"/>

但是(关于安全)

最好将其保存在例如$_SESSION['amount'] 以及参考 ID $_SESSION['reference_id'] = md5('whatever you like' .'plus salt');

并在 paypal 按钮中使用该 reference_id，如下所示:

<input type="hidden" name="return" value="http://example.com/donate?ref=<?php echo $_SESSION['reference_id'] ?>"/>

然后，如果 $_GET['ref'] == $_SESSION['reference_id']，那么您可以使用 $_SESSION['amount'] 变量.

I know how to make a PayPal donate button redirect after payment, but what I need to know is, can you pass the payed amount through this redirection. So it would redirect to http://example.com/donate?amount=123, is this even possible? Thanks!

EDIT: It seems I can do it with IPN(?), I just don't know how to use paypal's IPN, can anyone help me? (yes I have read the docs, they are confusing)

解决方案

yes it is possible, like so:

<!-- where you setup your paypal button : -->
<input type="hidden" name="return" value="http://example.com/donate?amount=<?php echo $amount ?>" />

But (concerning security)

It would be better to keep it in e.g. $_SESSION['amount'] along with a reference id $_SESSION['reference_id'] = md5('whatever you like' . 'plus salt');

And in the paypal button use that reference_id like so:

<input type="hidden" name="return" value="http://example.com/donate?ref=<?php echo $_SESSION['reference_id'] ?>" />

And then, if $_GET['ref'] == $_SESSION['reference_id'], then you can use the $_SESSION['amount'] variable.

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