[XML][PHP] Problem z pobranie atrybutu tagu XML Opcje

[shinuexx]

Witam
Mam taki problem z przetworzeniem za pomocą DOM w php takiego XML:

[XML] pobierz, plaintext 
<?xml version='1.0' encoding='UTF-8'?>
<entry xmlns='http://www.w3.org/2005/Atom' xmlns:media='http://search.yahoo.com/mrss/' xmlns:gd='http://schemas.google.com/g/2005' xmlns:yt='http://gdata.youtube.com/schemas/2007'>
	<id>http://gdata.youtube.com/feeds/api/videos/QtB_i-uDxLI</id>
	<published>2009-06-18T13:14:07.000Z</published>
	<updated>2011-02-27T22:24:06.000Z</updated>
	<category scheme='http://schemas.google.com/g/2005#kind' term='http://gdata.youtube.com/schemas/2007#video'/>
	<category scheme='http://gdata.youtube.com/schemas/2007/categories.cat' term='People' label='Ludzie i blogi'/>
	<category scheme='http://gdata.youtube.com/schemas/2007/keywords.cat' term='Не зарекайся'/>
	<title type='text'>БАНД`ЭРОС "Не зарекайся"</title>
	<content type='text'/>
	<link rel='alternate' type='text/html' href='http://www.youtube.com/watch?v=QtB_i-uDxLI&amp;feature=youtube_gdata'/>
	<link rel='http://gdata.youtube.com/schemas/2007#video.responses' type='application/atom+xml' href='http://gdata.youtube.com/feeds/api/videos/QtB_i-uDxLI/responses'/>
	<link rel='http://gdata.youtube.com/schemas/2007#video.related' type='application/atom+xml' href='http://gdata.youtube.com/feeds/api/videos/QtB_i-uDxLI/related'/>
	<link rel='self' type='application/atom+xml' href='http://gdata.youtube.com/feeds/api/videos/QtB_i-uDxLI'/>
	<author>
		<name>BanderosOfficial</name>
		<uri>http://gdata.youtube.com/feeds/api/users/banderosofficial</uri>
	</author>
	<gd:comments>
		<gd:feedLink href='http://gdata.youtube.com/feeds/api/videos/QtB_i-uDxLI/comments' countHint='7'/>
	</gd:comments>
	<media:group>
		<media:category label='Ludzie i blogi' scheme='http://gdata.youtube.com/schemas/2007/categories.cat'>People</media:category>
		<media:content url='http://www.youtube.com/v/QtB_i-uDxLI?f=videos&amp;app=youtube_gdata' type='application/x-shockwave-flash' medium='video' isDefault='true' expression='full' duration='233' yt:format='5'/>
		<media:content url='rtsp://v5.cache4.c.youtube.com/CiILENy73wIaGQmyxIPri3_QQhMYDSANFEgGUgZ2aWRlb3MM/0/0/0/video.3gp' type='video/3gpp' medium='video' expression='full' duration='233' yt:format='1'/>
		<media:content url='rtsp://v8.cache4.c.youtube.com/CiILENy73wIaGQmyxIPri3_QQhMYESARFEgGUgZ2aWRlb3MM/0/0/0/video.3gp' type='video/3gpp' medium='video' expression='full' duration='233' yt:format='6'/>
		<media:description type='plain'/>
		<media:keywords>Не зарекайся</media:keywords>
		<media:player url='http://www.youtube.com/watch?v=QtB_i-uDxLI&amp;feature=youtube_gdata_player'/>
		<media:thumbnail url='http://i.ytimg.com/vi/QtB_i-uDxLI/0.jpg' height='240' width='320' time='00:01:56.500'/>
		<media:thumbnail url='http://i.ytimg.com/vi/QtB_i-uDxLI/1.jpg' height='90' width='120' time='00:00:58.250'/>
		<media:thumbnail url='http://i.ytimg.com/vi/QtB_i-uDxLI/2.jpg' height='90' width='120' time='00:01:56.500'/>
		<media:thumbnail url='http://i.ytimg.com/vi/QtB_i-uDxLI/3.jpg' height='90' width='120' time='00:02:54.750'/>
		<media:title type='plain'>БАНД`ЭРОС "Не зарекайся"</media:title>
		<yt:duration seconds='233'/>
	</media:group>
	<gd:rating average='4.9633026' max='5' min='1' numRaters='109' rel='http://schemas.google.com/g/2005#overall'/>
	<yt:statistics favoriteCount='130' viewCount='41513'/>
</entry>
[XML] pobierz, plaintext 

Jest to XML z danymi z youtube'a. Znajduje się tam tag:

[XML] pobierz, plaintext 
<yt:duration seconds='233'/>
[XML] pobierz, plaintext 

i nie mogę sobie poradzić z wyświetleniem wartości atrybutu seconds.

Próbowałem takiego kodu:

[PHP] pobierz, plaintext 
$info = new DOMDocument();
$info->load("http://gdata.youtube.com/feeds/api/videos/".$movie);
$timesec=$info->getElementsByTagNameNS('yt','duration')->item(0)->getAttribute('second');
[PHP] pobierz, plaintext 

a także bez item(0) ale i to nie działa. Na necie nie znalazłem rozwiązania swojego problemu bo znalezione przeze mnie nie działa.
Proszę o pomoc.