What are the key differences between server-side PHP processing and client-side HTML rendering in the context of webpage titles?

When using server-side PHP processing for webpage titles, the title can be dynamically generated based on variables or database content. This allows for more flexibility and customization. On the other hand, client-side HTML rendering requires static titles to be hardcoded in the HTML file, limiting the ability to dynamically change the title based on user input or other factors.

<?php
$title = "Welcome to my website";
echo "<title>$title</title>";
?>