php - path of a script from another one -

i have structure:

-folder1    -folder2       -script1.php    -folder3       -script2.php

now i'm trying call script1 script2:

// script2.php file_get_contents(" path ? ");

note: path doesn't work /folder1/folder2/script1.php/. can writing plus domain name this:

http://example.com/folder1/folder2/script1.php/

but want know how can without writing domain name?

in script 2 can use:

file_get_contents("../folder2/script1.php");

or can include script 1 in script 2:

include("../folder2/script1.php");

better approach create class.

Addrety