How does the dynamic output of HTML code with PHP compare to integrating JavaScript with PHP?

When dynamically outputting HTML code with PHP, the server-side code generates the HTML content before sending it to the client's browser. On the other hand, integrating JavaScript with PHP allows for dynamic interactions on the client-side after the initial page load. This means that PHP is responsible for generating the initial HTML structure, while JavaScript can handle real-time updates and user interactions.

<?php
// PHP code generating HTML content
echo "<div>Hello, World!</div>";

// Integrating JavaScript with PHP
echo "<script>";
echo "document.getElementById('dynamicDiv').innerHTML = 'Hello, World!';";
echo "</script>";
?>