使用贝宝付款信息 [英] Payment info using paypal

问题描述

我使用php集成了Paypal.我知道有返回网址，这意味着当收到付款时，它将返回到我们网站的网址.
我的问题是，如果收到付款并且由于互联网问题，它没有返回到我们的网页，我该怎么办?知道从特定用户处收到了付款吗?

I have Integrated Paypal using php. I know there is return url ,that means when payment is received it will return to the url for our website.
My Question is if payment is received and due to internet problem it does not return to our web page, how do I know that payment is received from a particular user?

推荐答案

如果存在网络问题，并且PayPal无法发布IPN消息，则根据他们的文档，他们将重试15次，最多4天.

If there is a network issue and PayPal cannot issue the IPN message, then according to their documentation, they will retry 15 times up to 4 days.

IPN消息服务不假定您的侦听器将收到所有IPN消息.由于Internet并非100％可靠，因此IPN可能会丢失或延迟.为了解决这些问题， IPN消息服务包括重试机制，该机制可在各个时间间隔重新发送消息，直到您的听众确认收到为止.在发送原始IP消息后的四天内，可能会出现IPN消息.重试的最大次数为15.

The IPN message service does not assume that your listener will receive all IPN messages. Because the Internet is not 100% reliable, IPNs can get lost or be delayed. To address these issues, the IPN message service includes a retry mechanism that re-sends a message at various intervals until your listener acknowledges receipt. An IPN message may be present up to four days after the original was sent. The maximum number of retries is 15.

https://developer.paypal.com/docs/classic /ipn/integration-guide/IPNIntro/

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