What are the potential benefits of using sessions in PHP to prevent users from clicking the back button?

When users click the back button, they may be able to access cached pages with outdated session data. To prevent this, we can use sessions in PHP to store and manage user data securely. By using session variables to track user activity and storing session IDs in cookies, we can ensure that users have the most up-to-date information each time they navigate our site. 

<?php
session_start();
// Check if session variable is set, if not redirect user
if (!isset($_SESSION['logged_in'])) {
    header("Location: login.php");
    exit();
}
?>

Keywords

sessions PHP prevent back button users

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