What are the potential drawbacks of relying on session cookies for session management in PHP?

Potential drawbacks of relying on session cookies for session management in PHP include the risk of session hijacking, as session cookies can be easily stolen or manipulated. To mitigate this risk, it is recommended to use secure and HttpOnly flags for session cookies, implement proper session validation, and regularly regenerate session IDs.

// Set session cookie with secure and HttpOnly flags
ini_set('session.cookie_secure', 1);
ini_set('session.cookie_httponly', 1);

// Validate session
session_start();

if (!isset($_SESSION['validated'])) {
    // Redirect to login page or perform other actions
}