What are some best practices for handling session management in PHP to avoid the issue described in the thread?

Issue: The issue described in the thread is related to session fixation attacks, where an attacker can set the session ID of a user to a known value and then hijack the user's session. To avoid this issue, it is recommended to regenerate the session ID after a successful login or any other sensitive operation that changes the user's privilege level. PHP Code Snippet:

// Start or resume a session
session_start();

// Regenerate session ID to prevent session fixation attacks
session_regenerate_id(true);