Get namespaces with php

[deezerd]

Hi
I'm using the SimpleXMLElement class to get some info of an rss feed
The thing is I get nothing about the info included in the namespaces (<media:title> <media:content> <media:credit>) when I write
print_r($xml)

For example in this code, what should I do to the info in the media node:

[code]<media:player url="http://youtube.com/?v=hjlQfMECSdA"/> <media:thumbnail url="http://sjl-static10.sjl.youtube.com/vi/hjlQfMECSdA/2.jpg" width="120" height="90"/>[/code]

thanks!

[sKunKbad]

I need the same solution. Did you figure it out?

[sKunKbad]

This is from [url=http://www.sitepoint.com/blogs/2005/10/20/simplexml-and-namespaces/]http://www.sitepoint.com/blogs/2005/10/20/simplexml-and-namespaces/[/url], and was the only documented example I could find regarding parsing XML namespaces with php:

SimpleXML and namespaces

by Kevin Yank

There’s a lot about SimpleXML, PHP5’s new API for accessing the contents of XML documents, in SitePoint’s recently-published book No Nonsense XML Web Development With PHP, but one thing it doesn’t cover is how to use SimpleXML with a document that makes use of XML Namespaces.

Take this document, for example—a simplified RSS 1.0 feed:

[code]<?xml version="1.0" encoding="utf-8"?>
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns="http://purl.org/rss/1.0/" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <channel rdf:about="http://www.sitepoint.com/">
    <title>SitePoint.com</title>
    <link>http://www.sitepoint.com/</link>
    <description>SitePoint is the natural place to go to grow your online business.</description>
    <items>
      <rdf:Seq>
        <rdf:li rdf:resource="http://www.sitepoint.com/article/take-command-ajax" />
      </rdf:Seq>
    </items>
  </channel>
  <item rdf:about="http://www.sitepoint.com/article/take-command-ajax">
    <title>Take Command with AJAX</title>
    <link>http://www.sitepoint.com/article/take-command-ajax</link>
    <description>Want to get a bang out of your AJAX artillery?</description>
    <dc:date>2005-10-14T04:00:00Z</dc:date>
  </item>
</rdf:RDF>[/code]

In PHP5, here’s how you might think to use SimpleXML’s API to get at the date of every item in the feed:

[code=php:0]
$feed = simplexml_load_file('http://www.sitepoint.com/recent.rdf');
foreach ($feed->item as $item) {
  echo $item->date;
}
[/code]

But this won’t work, because the date element has a namespace prefix (<dc:date>), so it can’t be accessed by the usual means.

Here’s the solution. First, check what the URI is for the namespace. In this case, the dc: prefix maps to the URI http://purl.org/dc/elements/1.1/:

[code]<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns="http://purl.org/rss/1.0/" xmlns:dc="http://purl.org/dc/elements/1.1/">
[/code]

Then use the children method of the SimpleXML object, passing it that URI:

[code=php:0]
$feed = simplexml_load_file('http://www.sitepoint.com/recent.rdf');
foreach ($feed->item as $item) {
  $ns_dc = $item->children('http://purl.org/dc/elements/1.1/');
  echo $ns_dc->date;
}
[/code]

When you pass the namespace URI to the children method, you get a SimpleXML collection of the child elements belonging to that namespace. You can work with that collection the same way you would with any SimpleXML collection.

You can use the attributes [url=http://www.php.net/manual/en/function.simplexml-element-attributes.php]http://www.php.net/manual/en/function.simplexml-element-attributes.php[/url] in the same way to obtain attributes with namespace prefixes.