<?php
function request_var($var, $default, $multibyte = false)
{
    $request = (isset($_REQUEST[$var]) && !empty($_REQUEST[$var])) ? true : false;

    if ($request)
    {
        if (is_string($default))
        {
            return (string) $_REQUEST[$var];
        }
        else if (is_int($default))
        {
            return (int) $_REQUEST[$var];
        }
        else if (is_float($default))
        {
            return (float) $_REQUEST[$var];
        }
        else if (is_bool($default))
        {
            return (bool) $_REQUEST[$var];
        }
        else if (is_array($default))
        {
            $casted_array = array();

            foreach ($default as $type)
            {
                if (is_string($type))
                {
                    $casted_array[] = (string) $_REQUEST[$var];
                }
                else if (is_int($type))
                {
                    $casted_array[] = (int) $_REQUEST[$var];
                }
                else if (is_float($type))
                {
                    $casted_array[] = (float) $_REQUEST[$var];
                }

                break;
            }

            return $casted_array;
        }
    }
    else
    {
        return $default;
    }
}
?>