Currently I have created some php based webpages and uploaded them to my web hosting server.It has a PHP 5.1.6
installed.With this I am able to include files only that are in the same directory(they work well using require() fn).If not an error message displaying some "no such file" in directory appears in the page.I would like to use them to be included in different direcetories.What should I do?

You can either use an absolute path or use a relative path, but use .. to refer to parent directories.

For example, if your script is in the directory '/home/yoursite/public_html/foo/foo.php' and you want to include a file in the parent directory called bar.php you could do it one of two ways:

PHP Code:

include('/home/yoursite/public_html/bar.php');
//or
include('../bar.php'); 


or use:

PHP Code:

include_once("../bar.php") 


This will help down the road

PHP Code:

<?php include($_SERVER['DOCUMENT_ROOT']."/include/inc_nav.php")?>