How can relative links in PHP applications cause problems with mod_rewrite?

Relative links in PHP applications can cause problems with mod_rewrite because mod_rewrite changes the URL structure of the application, which can break relative links that are based on the original URL structure. To solve this issue, it is recommended to use absolute links in PHP applications instead of relative links.

<?php
// Use absolute links instead of relative links
echo '<a href="http://www.example.com/page.php">Link</a>';
?>