checks whether the session is set or not, if not it will redirect the user to login page. 1

checks whether the session is set or not, if not it will redirect the user to login page.

session_start();
if(!isset($_SESSION['username'])){
   header("Location:Login.php");
}

Here is what the above code is Doing:
1. It’s checking if the session variable ‘username’ is set.
2. If it is, then it’s doing nothing.
3. If it isn’t, then it’s redirecting the user to the login page.

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