Includes in php ?

hello i have a problem in includes in php
my problem is that i have a file called header.php in my root directory
Ex> /public_html/header.php

And i want to add this directory in every page because my all CSS and js in this file
Is there any code for include this to

/public_html/folder/folder2/folder3/index.php



in short i want to use header.php to my every page directory please tell what the code i can use in pages then header.php get on everypage.



please help thank you

 

include($_SERVER['DOCUMENT_ROOT'] . '/header.php');

PHP:

 

thank you so much its working
and also for quick replying

 

No problem.

 

Thanks sir,from last few days I also face the same Problem, now I also solve them, again thanks.