What are the security implications of using $_REQUEST instead of $_POST in PHP form handling?

Using $_REQUEST instead of $_POST in PHP form handling can pose security risks because $_REQUEST includes data from both $_GET and $_POST, making it vulnerable to injection attacks. To mitigate this risk, it is recommended to use $_POST specifically for form submissions to ensure that only data submitted via POST method is processed.

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