What are the potential pitfalls of using iframes in PHP for webpage layout?

One potential pitfall of using iframes in PHP for webpage layout is that it can lead to slower loading times and decreased SEO performance. To solve this issue, consider using PHP includes instead of iframes to include external content within your webpage. This will help improve loading times and make your website more search engine friendly.

<?php
include 'header.php';
include 'content.php';
include 'footer.php';
?>