How can PHP be utilized to automate the updating of content on a webpage without manual intervention?

To automate the updating of content on a webpage without manual intervention, PHP can be used to fetch new content from a database or external source and dynamically update the webpage with the latest information.

<?php
// Connect to database or external source to fetch new content
$newContent = "New content fetched from database or external source";

// Update the webpage with the new content
echo $newContent;
?>