How can PHP and JavaScript be effectively integrated for conditional display of elements?

To effectively integrate PHP and JavaScript for conditional display of elements, you can use PHP to generate JavaScript code that will handle the conditions for displaying elements based on certain criteria. This can be done by echoing JavaScript code within PHP based on the conditions you want to check. By combining the server-side capabilities of PHP with the client-side interactivity of JavaScript, you can create dynamic and responsive web pages.

<?php
$showElement = true; // This can be set based on any condition you want to check

echo '<script>';
echo 'if(' . $showElement . ') {';
echo 'document.getElementById("elementId").style.display = "block";';
echo '} else {';
echo 'document.getElementById("elementId").style.display = "none";';
echo '}';
echo '</script>';
?>