What are the potential pitfalls of including PHP files in different divs on a webpage?

Including PHP files in different divs on a webpage can lead to code duplication, maintenance issues, and potential security vulnerabilities. To solve this, you can use PHP include_once() function to include the file only once in the entire webpage, ensuring that the code is not duplicated and reducing the chances of errors.

<?php 
include_once('path/to/your/file.php');
?>