What are the best practices for handling window size and behavior in PHP applications to ensure a smooth user experience?

To ensure a smooth user experience in PHP applications, it's important to handle window size and behavior properly. This can be achieved by using responsive design techniques to ensure that the application adapts to different screen sizes and devices. Additionally, using JavaScript libraries like jQuery can help in managing window resizing events and adjusting the layout accordingly.

// Example PHP code snippet for handling window resize event using jQuery
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script>
$(window).resize(function() {
    // Add code here to adjust layout based on window size
});
</script>