Solutions to IE7 iframe session loss in php

This article introduces how to solve the problem of IE7 iframe session loss in php at home. If you encounter such problems, refer

If you use the iframe method, you may encounter this problem. This problem only exists in the IE 7 browser. I have no problems in tests in firefox, IE6, chrome, and other browsers.

Before Running session_start, add the following sentence in the Program (taking the php language as an example) to declare the security level to the browser, in this way, the iframe subpage will not be faulty when creating the session:

The Code is as follows:	Copy code
Header ('p3p: CP = "all adm dev PSAi com our OTRo stp ind onl "');

In addition, I also learned that if the second-level domain name contains underscores, such as your_domain.yourhost.com, problems may also occur during creation and transfer of sessions.