foreach ($xml->urun as $urun)
{
	echo "Ürün Kodu : ".$urun->UrunKodu; 
        $secenekler = $urun->xpath('UrunSecenek');
	foreach($secenekler as $secenek)
	{
		foreach($secenek->Secenek as $val)
		{
			echo $val->StokKodu."<br />";
		}
		echo "<hr>";
	}	
}