支付成功后PayPal POST数据
我正在尝试制作一个 PHP 应用程序，它将与 MySQL 交互。 我已经有一个获取 POST 数据的页面，在获取数据后，它会向用户提供“信用”。 订单成功后 PayPal 按钮可以向我发送发布数据吗？ 或者还有其他办法吗？ （很可能更简单、更安全）
I am trying to make an PHP app, that will interact with MySQL.
I already have an page that gets POST data, and after it gets it, it gives "credit" to user.
Can PayPal button after successful order send me an post data?
or is there any other way? (most likely simplier and more secure)
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是的，请查看 PayPal 即时付款通知 (IPN) - https://www.paypal.com/ipn/
每当发起交易时，这将强制向您发送交易数据的 POST。如果您当前使用网站付款标准（基于 HTML 的按钮），则只需添加
Youll need to take all POST data you receive from PayPal, Append cmd=_notify-validate 并将其发送回 https://www.paypal.com/cgi-bin/webscr （或 https://www.sandbox.paypal.com/cgi-bin/webscr 用于沙箱) 以验证 IPN 消息。
根据此结果，您将收到无效或已验证的响应。
INVALID 可能意味着 IPN POST 并非源自 PayPal，而 VERIFIED 意味着 IPN POST 经验证确实来自 PayPal。
Yes, have a look at PayPal Instant Payment Notification (IPN) - https://www.paypal.com/ipn/
This will force a POST of transactional data to be sent to you whenever a transaction has been initiated. If you currently use Website Payments Standard (HTML based buttons), you can simply add
You'll need to take all POST data you received from PayPal, append cmd=_notify-validate and send it back to https://www.paypal.com/cgi-bin/webscr (or https://www.sandbox.paypal.com/cgi-bin/webscr for Sandbox) in order to validate the IPN message.
Depending on this result, you'll get back an INVALID or VERIFIED response.
INVALID may mean the IPN POST didn't originate from PayPal, whereas VERIFIED means the IPN POST was verified as indeed coming from PayPal.