Parse XML with PHP that contains namespaces

Question

I am trying to parse an XML file in PHP that looks like:

<post dsq:id="##Edited out##">
    <id />
    <message>##Edited out##</message>
    <createdAt>2010-07-09T16:08:44Z</createdAt>
    <author>
        <email>##Edited out##</email>
        <name>##Edited out##</name>
        <isAnonymous />
    </author>
    <ipAddress>##Edited out##</ipAddress>
    <thread dsq:id="##Edited out##" />
</post>

<post dsq:id="##Edited out##">
    <id />
    <message>##Edited out##</message>
    <createdAt>2010-07-09T16:10:07Z</createdAt>
    <author>
        <email>##Edited out##</email>
        <name>##Edited out##</name>
        <isAnonymous />
    </author>
    <ipAddress>##Edited out##</ipAddress>
    <thread dsq:id="##Edited out##" />
</post>

I am using simple xml to parse it like this:

$xml = simplexml_load_file('disqus.xml');

foreach ( $xml->post as $post )
{
    echo $post['dsq:id'];
}

However, I am unable to get the id attribute from the post object here:

<post dsq:id="##Edited out##">

Any information on how that could be retrieved would be greatly appreciated.

<?xml version="1.0" encoding="utf-8"?> <disqus xmlns="disqus.com" xmlns:dsq="disqus.com/disqus-internals" xmlns:xsi="w3.org/2001/XMLSchema-instance" xsi:schemaLocation="disqus.com/api/schemas/1.0/disqus.xsd disqus.com/api/schemas/1.0/disqus-internals.xsd"> — John Jacquay
– John Jacquay, Commented Mar 29, 2011 at 21:52
This looks like it'll work for you blog.sherifmansour.com/?p=302 — theraccoonbear
– theraccoonbear, Commented Mar 29, 2011 at 21:53
Here is my updated code but it is still not working: $xml = simplexml_load_file('disqus.xml'); foreach ( $xml->post as $post ) { $dsq = $post->children('w3.org/2001/XMLSchema-instance'); echo $dsq->id; } — John Jacquay
– John Jacquay, Commented Mar 29, 2011 at 21:58

Treffynnon · Accepted Answer · 2011-03-29 23:05:00Z

1

$xml = simplexml_load_file('disqus.xml');

foreach ( $xml->post as $post )
{
    $dsq = $post->children('disqus.com/disqus-internals'); //should this not have http://disqus.com/disqus-internals?
    echo $dsq->id;
}

The one you are using, w3.org/2001/XMLSchema-instance, is for the xsi namespace.

answered Mar 29, 2011 at 23:05

Treffynnon

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