How can i find the I.P Adress of a Website hiding behind Cloudflare ? [Please help]

Code
<?php



/*

 * getCF.php

 * I got tired of looking up the DNS records of these various hosts

 * to find the real IP of a CloudFlare protected Server.

 * www.bigkesh.com

 * orgy[at]bigkesh[dot]com

 * Usage: php getCF.php domain.com

 * Usage2: www.yoursite.com/getCF.php?find=domain.com

 */



if (!isset($argv[1]) && !isset($_GET['find']))

{

    die("Argument needs to be a valid hostname.\n");

}



$lookupArr = array("mail.", "direct.", "direct-connect.", "cpanel.", "ftp.");



foreach ($lookupArr as $lookupKey)

{



    if (isset($_GET['find']))

    {

        $newline = "<br />";

        $lookupHost = $lookupKey . $_GET['find'];

    }

    else

    {

        $newline = "\n";

        $lookupHost = $lookupKey . $argv[1];

    }



    $foundHost = gethostbyname($lookupHost);



    if ($foundHost == $lookupHost)

    {

        echo "{$lookupHost} had no DNS record.{$newline}";

    }

    else

    {

        echo "{$lookupHost} = {$foundHost}{$newline}";

    }

}



?>