Session and Logger

Pull request had Logger and Writer that write logs in file, but don't have request in code that summon him.
Session - then you go in main page "site.com" if your session have $_SESSION['logInStatus'] = 1 you will see your account page else you will see LogIn page.
no way!
Do not store routine files (logs, statistics and so on) with core files

You can create a separate folder for it (logs for example) in the project root namespace.