Get Contents By Passing Variables

[Kayzio]

I want to grab the contents of a file but I need to pass a variable to the file I'm getting the contents from. Here is what I tried but it doesn't work:

$Var = "test";
$Contents = file_get_contents("test.php?var=$Var") 

Here is the error I get

Warning:  file_get_contents(test.php?var=test) [function.file-get-contents]: failed to open stream: Invalid argument in ../index.php

What I would like to know is there a way to achieve this, getting the contents of a file while passing a variable to it. Thanks in advance,
Matt

[Kayzio]

nvm i figured out a better way of achieving this using includes instead