如何使用PHP将header.html提取到index.html文件中？

I have an header.html file in which I have created a navigation section

I need to use this header.html file on multiple pages.

I want to know if it is possible to use header.html using PHP?

Use PHP include or file_get_contents:

<?php include ('PATH_TO_YOUR_HTML'); ?>

Or this:

<?php echo file_get_contents("PATH_TO_YOUR_HTML"); ?>