What are the best practices for handling sessions in PHP to prevent unauthorized access to protected directories?

To prevent unauthorized access to protected directories in PHP, it is important to properly handle sessions. One of the best practices is to use session variables to store user authentication information and check these variables on each protected page to ensure the user is logged in. Additionally, using session_regenerate_id() to regenerate the session ID after a user logs in can help prevent session hijacking attacks. 

session_start();

if(!isset($_SESSION['logged_in']) || $_SESSION['logged_in'] !== true) {
    header("Location: login.php");
    exit;
}

// Other code for protected directory goes here

Keywords

session management authentication authorization directory protection security vulnerabilities

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