What are the best practices for including one webpage into another in PHP without using iFrames?

To include one webpage into another in PHP without using iFrames, you can use the `file_get_contents()` function to retrieve the content of the webpage and then echo it onto the current webpage. This method allows you to include external content seamlessly within your webpage.

<?php
$external_page = file_get_contents('http://www.example.com/external_page.php');
echo $external_page;
?>