What are the potential pitfalls of using Frontpage and frames instead of PHP includes for website development?

Using Frontpage and frames instead of PHP includes can lead to issues with SEO, as search engines may not properly index the content within frames. Additionally, frames can cause usability problems for visitors, such as difficulty bookmarking specific pages or navigating back and forth within the site. To solve this issue, it is recommended to use PHP includes to dynamically include content across multiple pages, improving SEO and user experience.

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