PHPBuilder.com has a new article published today that works through some of the basics behind using the superglobal variables in PHP.

This month's article is aimed at PHP developers who're not yet familiar with the PHP superglobals. Usage of superglobals is fundamental to PHP web development, but, with all the recent changes in PHP, there are still many outdated tutorials, books, and sadly, still much confusion.

They look at how to use them in a PHP script (in an HTML page) and what's contained in each of them (_GET, _POST, _ENV, _SERVER, etc).