What is the syntax for including a PHP file within another PHP file?

To include a PHP file within another PHP file, you can use the `include` or `require` statement followed by the path to the file you want to include. This allows you to reuse code from one file in another file, making your code more modular and easier to manage. Make sure to use the correct file path to include the file successfully.

<?php
include 'path/to/your/file.php';
?>