Most of the $_SERVER and $_ENV variables should not be used on public websites.

The name of the curent script is /cs295p/bookDemos/chapter4/AssociativeArrays.php
This script was executed with the following server softwar: Apache/2.2.31 (Amazon)
This script was requred with the following server protocol:HTTP/1.0

/cs295p/bookDemos/chapter4/AssociativeArrays.php

Global variable