How to require a user to be logged in

Question

I'm fairly new to PHP an was wondering how I have to make the user login before they can go to any other page on the website.
For example on www.cyka.us/p/index.php it will redirect them to www.cyka.us/p/login.php

Answer 1

Have you ever used sessions in php? You can use sessions as a marker if a certain user is logged in or not. It can be implemented like this:

 $isLogIn = $session('login'); if($isLogIn){ //go to other webpages }

Search sessions for further information :)

Answer 2

You simply test for it:

if (!user_is_logged_in()) {
    http_response_code(403);
    include("p/login.php");
    exit;
}

… the specifics of the user_is_logged_in function will depend on how you've implemented your login system.

Answer 3

You can do this with sessions concept in php. For every page you need check whether the user is logged in or not and redirect to (login)desired page.