php / mysql - Issue when redirecting based on user_level

Question

I\'m currently building a control panel based on user_level. If a user has level (0) they can\'t access anything besides the index page, level (1) can access everything.

Answer 1

You are using session like:

if($_SESSION["user_level"] == 0)
{
    header('Location: index.php');
}

but session is not started here. Start the session on first line like:

session_start();

only after that you can access the session variable.