How does using a modular approach in PHP, such as including separate files for layouts, contribute to the overall efficiency and reusability of code?

Using a modular approach in PHP by including separate files for layouts helps to improve code organization, readability, and reusability. By breaking down the code into smaller, manageable components, it becomes easier to maintain and update specific sections without affecting the entire codebase. This also allows for better collaboration among developers and promotes code consistency across different projects.

// index.php

<?php
include 'header.php';
include 'content.php';
include 'footer.php';
?>