How do I start and manage sessions in PHP?

Starting and managing sessions in PHP is essential for maintaining user state across different pages. Sessions allow you to store user information and retrieve it on subsequent page requests. Below is a simple guide to help you get started with sessions in PHP.


        <?php
        // Start a session
        session_start();

        // Store session variables
        $_SESSION['username'] = 'JohnDoe';
        $_SESSION['role'] = 'admin';

        // Access session variables
        echo 'Username: ' . $_SESSION['username'];
        echo 'Role: ' . $_SESSION['role'];

        // Destroy a session
        session_unset(); // Clear session variables
        session_destroy(); // End the session
        ?>