How can external pages be called and integrated into a PHP script effectively?

When integrating external pages into a PHP script, you can use the file_get_contents() function to fetch the content of the external page and then include or echo that content within your PHP script. This allows you to seamlessly integrate external content into your script.

<?php
$external_page = file_get_contents('https://www.externalwebsite.com/page');
echo $external_page;
?>