What are the advantages and disadvantages of using iframes to load PHP content on a webpage?

Using iframes to load PHP content on a webpage can provide a way to dynamically load content without refreshing the entire page. However, iframes can sometimes cause issues with SEO, accessibility, and responsiveness. It is important to weigh the advantages and disadvantages before deciding to use iframes for loading PHP content.

<?php
// PHP code to load content within an iframe
?>
<iframe src="content.php" width="100%" height="500px"></iframe>