What are the advantages of using absolute paths and URLs in PHP over relative paths when including files from different directories?

Using absolute paths and URLs in PHP when including files from different directories ensures that the correct file is always included, regardless of the current working directory. This can prevent errors and make the code more maintainable. It also allows for easier navigation and understanding of the file structure.

<?php
include_once($_SERVER['DOCUMENT_ROOT'] . '/path/to/file.php');
?>