How can server-side and client-side technologies be effectively integrated to improve user experience in PHP applications?

To improve user experience in PHP applications, server-side and client-side technologies can be effectively integrated by using AJAX to make asynchronous requests to the server for dynamic content updates without refreshing the entire page. This approach allows for a more seamless and interactive user experience.

// PHP code snippet demonstrating the integration of server-side and client-side technologies using AJAX

// Server-side PHP code to handle AJAX request
if(isset($_POST['data'])){
    // Process data and return response
    $response = "Data processed successfully";
    echo $response;
    exit;
}

// Client-side JavaScript code to make AJAX request
<script>
    $(document).ready(function(){
        $.ajax({
            type: 'POST',
            url: 'ajax_handler.php',
            data: {data: 'example data'},
            success: function(response){
                alert(response);
            }
        });
    });
</script>