//non namespaced attributes

<?php

$data=<<<XML


<rss version="2.0" xmlns:media="http://search.yahoo.com/mrss/">
 <channel>
   <item>
	<title>Title: 0</title>
	<link test="test" test2="This is a test">Link:0</link>
	<media:thumbnail url="0"/>
	<media:content url="0" type="video/mp4" />
  </item>
    <item>
	<title>Title: 1</title>
	<link>Link:1</link>
	<media:thumbnail url="1"/>
	<media:content url="1" type="video/mp4" />
  </item>
    <item>
	<title>Title: 2</title>
	<link>Link:2</link>
	<media:thumbnail url="2"/>
	<media:content url="2" type="video/mp4" />
  </item>
    <item>
	<title>Title: 3</title>
	<link>Link:3</link>
	<media:thumbnail url="3"/>
	<media:content url="3" type="video/mp4" />
  </item>
   </channel>
</rss>

XML;

$xml=simplexml_load_string($data);

echo $xml->channel[0]->item[0]->title."<br>";
echo $xml->channel[0]->item[0]->link->attributes()->test2="This is a NEW test!.";


//Creates update.xml with updated test2 value
$xml->asXml('updated.xml');


?>

===============================================================================
//namespaced attributes

<?php

$data=<<<XML

<rss version="2.0" xmlns:media="http://search.yahoo.com/mrss/">
 <channel>
   <item>
	<title>Title: 0</title>
	<link test="test" test2="This is a test">Link:0</link>
	<media:thumbnail url="Thumbnail URL: 0"/>
	<media:content url="Content URL: 0" type="video/mp4" />
  </item>
    <item>
	<title>Title: 1</title>
	<link>Link:1</link>
	<media:thumbnail url="1"/>
	<media:content url="1" type="video/mp4" />
  </item>
 </channel>
</rss>

XML;



$xml=simplexml_load_string($data);

//reading simple node
echo $xml->channel[0]->item[0]->title;

echo "<br>----------------------------------<br>";

//reading/updating simple node's attribute
echo $xml->channel[0]->item[0]->link->attributes()->test2="This is a NEW test!.";

echo "<br>----------------------------------<br>";

//reading/updating namespaced node's attribute
echo $xml->channel[0]->item[0]->children('media',TRUE)->content->attributes()->type="VIDEO/MP6";

//saving...
$xml->asXml('updated.xml');

?>

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