What is the difference between HTML and PHP in the context of processing form data?

When processing form data, HTML is used to create the form structure and layout, while PHP is used to handle the form submission and process the data inputted by the user. HTML is responsible for displaying the form elements such as text fields, buttons, and dropdown menus, while PHP is used to retrieve the data submitted through the form, validate it, and perform any necessary actions based on the input.

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $name = $_POST['name'];
    $email = $_POST['email'];
    
    // Process the form data here
}
?>