What are the advantages of using PHP include statements for embedding content compared to iframes?

Using PHP include statements for embedding content is advantageous compared to iframes because includes allow for better integration with the rest of the website's code, resulting in a more seamless user experience. Additionally, includes are more secure as they are executed on the server side, reducing the risk of security vulnerabilities. Lastly, includes are more efficient in terms of performance as they do not require an additional HTTP request like iframes do.

<?php
include 'header.php';
echo "<div>Welcome to our website!</div>";
include 'footer.php';
?>