What are the best practices for handling sessions in PHP to avoid login issues?

To avoid login issues in PHP, it is important to properly handle sessions. This includes setting session variables securely, validating user credentials before starting a session, regenerating session IDs to prevent session fixation attacks, and destroying sessions properly after logout. 

// Start the session
session_start();

// Validate user credentials before starting a session
if($valid_credentials){
    $_SESSION['logged_in'] = true;
    $_SESSION['user_id'] = $user_id;
}

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

// Destroy session on logout
session_destroy();

Keywords

session management authentication security cookies session hijacking

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