Can implementing sessions in PHP help prevent unauthorized access to restricted areas of a website?

Implementing sessions in PHP can help prevent unauthorized access to restricted areas of a website by storing user authentication information securely on the server. When a user logs in, a session is created and a unique session ID is stored as a cookie on the user's browser. This session ID is then used to verify the user's identity on subsequent requests to restricted areas of the site. 

// Start a new session or resume an existing one
session_start();

// Check if the user is logged in
if(!isset($_SESSION['logged_in'])) {
    // Redirect the user to the login page
    header("Location: login.php");
    exit();
}

// Restricted content goes here
echo "Welcome to the restricted area!";

Keywords

sessions PHP unauthorized access restricted areas website

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