What are the benefits of separating PHP code from layout and design in web development?

Separating PHP code from layout and design in web development helps improve code readability, maintainability, and reusability. It also allows for better collaboration among developers and designers, as they can work on their respective tasks independently without interfering with each other's work.

<?php
// Separate PHP code from layout and design
$data = fetchDataFromDatabase();

// Include the HTML layout file
include 'layout.php';
?>