我试图在Paypal中确定是否已使用IPN消息成功付款。我在服务器上有侦听器脚本，我设置了Paypal上侦听器的URL以及启用通知。然而，每当我刷新侦听器页面时，我都会收到"无效"响应。我知道我做错了什么事，只是想不出来。
谢谢!
只要检查下面的链接，你会得到的想法(Paypal)
https://cms.paypal.com/cms_content/US/en_US/files/developer/IPN_PHP_41.txt http://ebusinessebooks.com/ipnscript.php http://www.softcoded.com/articles/paypal_hack1.php https://www.paypal.com/ipnjavascript python java c# php android html jquery c++ css ios sql mysql arrays asp.net json python-3.x ruby-on-rails .net sql-server django objective-c excel regex ruby linux ajax iphone xml vba spring asp.net-mvc database wordpress string postgresql wpf windows xcode bash git oracle list vb.net multithreading eclipse algorithm macos powershell visual-studio image forms numpy scala function api selenium