Using PHP to extract Source IP from email header input via HTML form

Hi,
I am very much a noob at PHP and have been trying to get a web page up that extracts source IP's from an email header that has been pasted in to a form.
I can get the data into an array but am having massive trouble getting the IP's to print. I am pasting in the code I am using below. Please dont laugh too much as I said I am very new to this and have been trying to teach myself as I go.

The html:
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>

<body>
<p>Enter the headers here: </p>
<p> </p>
<form id="header" inputname="header" method="post" action="checkheader.php"><textarea name="headers" id="headers" class="box" type="text" rows="20" cols="130" ></textarea>
<input type="submit" />
</form>

</body>
</html>
The PHP:
<?php
$header=$_POST['headers'];
$ipreg="/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/im";// /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/
preg_match_all("/Received:.*((?:\d+\.){3}\d+)/",$header,$stored);
print_r($stored);
echo count($stored);
?>
And an example header (taken from a spam message)
Return-Path: <kenken_8880@yahoo.com>
Received: from fep08.mfe.bur.connect.com.au (mfep08.mbe.bur.connect.com.au [203.63.232.28])
by mcn01 (Cyrus v2.1.18-CCA_b9) with LMTP; Sat, 28 Apr 2012 00:50:15 +1000
X-Sieve: CMU Sieve 2.2
Received: from fep08.mfe.bur.connect.com.au (localhost [127.0.0.1])
by localhost.mfep08.connect.com.au (Postfix) with ESMTP id 6D9DB13355
for <timbass@aapt.net.au>; Sat, 28 Apr 2012 00:50:15 +1000 (EST)
Received: from bware04.bur.connect.com.au (bware04.bur.connect.com.au [210.8.230.175])
by fep08.mfe.bur.connect.com.au (Postfix) with ESMTP id 5181A1334A
for <timbass@aapt.net.au>; Sat, 28 Apr 2012 00:50:15 +1000 (EST)
Authentication-Results: bware04.bur.connect.com.au
header.from=kenken_8880@yahoo.com; domainkeys=neutral (no sig)
Received: from nm17-vm10.bullet.mail.sg3.yahoo.com (nm17-vm10.bullet.mail.sg3.yahoo.com [106.10.149.89])
by bware04.bur.connect.com.au (BorderWare Security Platform) with SMTP id FD5C78DA29008A4D
for <timbass@aapt.net.au>; Sat, 28 Apr 2012 00:50:14 +1000 (EST)
Received: from [106.10.166.120] by nm17.bullet.mail.sg3.yahoo.com with NNFMP; 27 Apr 2012 14:50:14 -0000
Received: from [106.10.167.180] by tm9.bullet.mail.sg3.yahoo.com with NNFMP; 27 Apr 2012 14:50:13 -0000
Received: from [127.0.0.1] by smtp153.mail.sg3.yahoo.com with NNFMP; 27 Apr 2012 14:50:13 -0000
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1335538213; bh=G/EpuDM1NHRGk3zqlboZHdgTsi7MZNxK5d2VM2G0KeA=; h=X-Yahoo-Newman-Id:X-Yahoo-Newman-Property:X-YMail-OSG:X-Yahoo-SMTP:Received:Message-ID:Date:From:Subject:To:Content-Type:MIME-Version:X-Mailer; b=bg3NakKWomvHD8JsrUcg38oY1wo7aIZmeLY2glPi9SweUkT8Eraag4rhTasTWDAzk6nH8lpprcm+CX28u1yHK0uCj51JTvmEu9 JG0anJmJB7qnx2C3H0j0kmQKzlR7MxmbgQtz6fdDasIN4SYyJt2invUlSeoB4e6Z0tlen9gBc=
X-Yahoo-Newman-Id: 982234.55022.bm@smtp153.mail.sg3.yahoo.com
X-Yahoo-Newman-Property: ymail-5
X-YMail-OSG: ioQGUHQVM1khkn4gVNtG5fj3OvLcl02KaqzhSm835IHEEd2
nPZ9Ve2PoKnwlpcntjCEQdCKmbW3dlmPslSS2EMzYSl32ntiWPxOwm0HE8eh
TRoibAq13X2yNPvtV4YgofhnGg3Zk56t6UwEZdqdwmMHF3wkr6bZ_.E9DNLR
X7r2QNmU8icr97WcgeyPUOjlZ9o_Bz._NStEOZ7TtFGeMZvIiBsH6xf8pP.k
l0AhkP_LkA14x.cRElQxaNm6YIBYlqdLr7.Ry4zFHMOVDXXUMo4vBmx2lgg4
2FfIahUb.iKvX13QiKkiFLTuobXM2eRAMRxe_NEX1V1vTqa4guruAA85qgDm
GgWY18daVOj_7GmBp4kuIe6JtWMZ5jSt1Evf.S3r5rmDexCA03sKgwsGBrbz
J8iJz1LCvHiaOqE4R0LviWpFbyxUltDSrAaiDFAI3Igy79o1Szr85qip.5R9
GbvqPHjq2WBqECw--
X-Yahoo-SMTP: VaaK2FWswBANOx4IY0VlY5PxOg2D.3jj
Received: from [192.168.1.1] (kenken_8880@180.252.140.97 with login)
by smtp153.mail.sg3.yahoo.com with SMTP; 27 Apr 2012 07:50:11 -0700 PDT
Message-ID: <4F9A6CD5.37A1AFEE@smtp.mail.yahoo.com>
Date: Fri, 27 Apr 2012 09:54:46 -0500
From: "kenken_8880@yahoo.com" <kenken_8880@yahoo.com>
Subject: FW: your arrest record
To: timbasham@embarqmail.com
Content-Type: multipart/alternative;
boundary="nprc8bOdbL=_olGWFbMto1GfLmlfWflfo5"
MIME-Version: 1.0
X-Mailer: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:0.9.5+)
Gecko/20011102
X-BTI-AntiSpam: score:58,sta:66/030,dnsbl:passed,sw:passed,bsn:42/passed,spf:none,bsctr:off,dk:passed,pbmf:none,ipr:1/3,trusted:no,ts:no,bs:no,ubl:passed
Received-SPF: none