<?php
   class Request{

    public function getParameter($param, $return=null)
    {
        if (isset($_POST[$param]))
        {
            $return = $_POST[$param];
        }
        else if (isset($_GET[$param]))
        {
            $return = $_GET[$param];
        }
        else if (isset($_FILES[$param]))
        {
            $return = $_FILES[$param];
        }
        return $return;
    }
   }
 ?>