How to record user sessions history

Question

how to make a system to record that user login and logout

Answer 1

Create a column named as login_status in users table and when any user logs in store 'loggedin' in that column and when user logs out store 'loggedout' in the column.

Answer 2

Make a session variable to keep record of user.
On the login page..write session_start();
create session variable $_SESSION['username'];
on the home page this is a must to write session_start() to use the session variable.

Answer 3

make