How can PHP and JavaScript be effectively integrated for form submission?

To effectively integrate PHP and JavaScript for form submission, you can use JavaScript to handle client-side validation and submission of the form data, and PHP to process and store the submitted data on the server side. This approach ensures a seamless user experience while also maintaining security and data integrity.

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
  // Process form data submitted via POST method
  $name = $_POST['name'];
  $email = $_POST['email'];
  
  // Perform any necessary validation or sanitization
  
  // Insert data into database or perform any other server-side actions
}
?>