This will be of help to you about usage of autoload

Masthan

It is a magic function that helps you include or require files using class name

ex :

function __autoload($class_name)

{

require_once $DOCUMENT_ROOT . "/classes/" . $class_name .".php";

}

Explanation:

$class_name verable name or object name

Every time you want to use a new class in your PHP project, first you need to include this class.