What are some common mistakes to avoid when implementing session management in PHP scripts?

One common mistake to avoid when implementing session management in PHP scripts is not properly securing the session data. To prevent session hijacking or tampering, it is important to use secure session handling techniques such as using HTTPS, setting secure session cookie flags, and regenerating the session ID after a user logs in.

// Start a secure session
session_start([
    'cookie_lifetime' => 86400, // 1 day
    'cookie_secure' => true, // Only transmit cookies over HTTPS
    'cookie_httponly' => true, // Prevent JavaScript access to cookies
]);

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