Session is destroyed after return from paypal

Question

我已经将Paypal定期订阅与我的网站集成在一起。成功交易后，我设置了返回URL。但是，一旦我从Paypal重定向，我的会话值就被销毁了，并且该页面上也没有返回任何内容。响应（交易ID，状态等）。任何人都可以指示我解决此问题。

Answer 1

Check that your response is coming back to the correct URL.
On some servers, www.site.com is considered different (session-wise) from site.com

Answer 2

With PayPal you have to set up something separate to listen out for an HTTP request from PayPal - the data you need doesn't get returned when PayPal send the customer back to the return URL. You have to set a notify URL, which is entirely separate from the return URL.

I recently used PayPal with the CodeIgniter framework and I set up a controller that is dedicated to listening out for PayPal. In the submission form, I defined a parameter for the form that contains the customer's ID as well as some other details needed, and PayPal include this when they make an HTTP request to the notify URL I specified. Then, when my controller that listens out for PayPal receives a request, it sends it back to PayPal via POST to acknowledge it to them.

The PayPal documentation isn't that great IMHO, especially when it comes to recurring subscriptions.