How can PHP and JavaScript be effectively combined to achieve specific functionality, such as refreshing a page upon button click?

To achieve the functionality of refreshing a page upon button click, you can use JavaScript to handle the button click event and trigger a PHP script to refresh the page. This can be done by making an AJAX request to a PHP script that reloads the page.

<?php
if(isset($_POST['refresh'])) {
    // Code to refresh the page
    echo "<script>window.location.reload();</script>";
    exit;
}
?>