在命名空间标记中解析XML属性（PHP）

Question

I'm using PHP and CURL to get XML, but I'm having problems accessing a specific type of attributes.

Say the XML document is like this:

<item>
    <title>Example Title</title>
    <link>http://www.google.com</link>
    <description>Sample desc here.</description>
    <media:content xmlns:media="http://mediaurl.com/" url="http://www.exampleurl.com/"
    type="image/jpeg" medium="image" height="226" width="571">
    </media:content>
</item>

I want to access the url attribute within the tag, but can't seem to get around the namespace problem.

Currently, I've tried using:

$promos = $item->getElementByTagNameNS("media", "content");
foreach ($promos as $promo)
{
    $promoImage = $promo->getAttribute("url");
    break;
}
echo $promoImage;

Answer 1

See http://www.php.net/manual/en/domdocument.getelementsbytagnamens.php. You need to register the namespace with the namespaceURI in your XML and specify it.

ADDED

In the beginning I didn't see you've got xmlns:media attribute in your XML. So all you need to change is line

$promos = $item->getElementsByTagNameNS("http://mediaurl.com/", "content");