How to resolve the issue of PHP session not working.

If your PHP session is not working, you can try the following solutions:

1. Check the PHP configuration file: Make sure that the session feature is enabled in your PHP configuration file (php.ini). Find the following line and ensure that it is not commented out (no semicolon at the beginning):
2. The session save handler is set to “files”, the save path is “/tmp”, cookies are being used for the session, and the session name is PHPSESSID.
3. You need to restart your web server for the changes made to the configuration file to take effect.
4. Check session initiation code: at the beginning of your PHP code, make sure to use the session_start() function to initiate the session. For example:
6. Check the permission of the session storage path: Make sure the session storage path (default is /tmp) has sufficient permission for PHP to create and read session files.
7. Clearing browser cache: Sometimes browsers may store old session information, preventing new sessions from taking effect. You can try clearing your browser cache or opening your webpage in a different browser to verify if the session is working properly.
8. Check for other code issues: If the above methods are ineffective, it may be that there are other problems in your code causing the session not to work. You can review your code for errors or logic issues, and make sure that the session_destroy() function is not called within the session lifecycle.

If you are still unable to solve the problem, we suggest that you refer to the official PHP documentation or consult with other developers in relevant PHP development communities.