When writing a script, you should avoid specifying the absolute (full) paths. This is to avoid to unduly bind the function to the path which may or may vary or change. A better solution is to use the relative path which means that one assumes the working directory where the script or the file is located.
If you want to reach a file called file.txt located in the directory directory/ the relative path is directory/file.txt.
In order to reach the file file2.txt located in the directory directory2/ from directory/ the relative path is ../directory2/file2.txt.
The example below shows how to include a text file with PHP:
<?php include("directory/file.txt"); ?> <?php include("../directory2/file2.txt"); ?>
The same example as above but for ASP and ASP.NET:
<!--#include file="directory\file.txt"--> <!--#include file="..\directory2\file2.txt"-->
Function calls that can be used instead of typing the full path.
Absolute path with ASP and ASP.NET:
Absolute path with PHP:
dirname(__FILE__) . "/directory/file.txt"