What are the potential drawbacks of using frames or iframes to keep the header section static on all pages?

Using frames or iframes to keep the header section static on all pages can lead to issues with SEO, accessibility, and overall website performance. Search engines may have difficulty crawling and indexing your content, screen readers may struggle to navigate the site, and loading times may be slower due to multiple requests being made for each frame. To address this issue, a better approach would be to use PHP includes to include the header section on all pages. This way, the header content is dynamically loaded into each page without the need for frames or iframes.

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