What are the drawbacks of using the REQUEST method in PHP for passing data between form submissions?

Using the REQUEST method in PHP for passing data between form submissions can lead to security vulnerabilities such as cross-site request forgery (CSRF) attacks. To mitigate this risk, it is recommended to use the POST method instead, as it is more secure and prevents CSRF attacks.

if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Process form data securely
}