PHP: retrieve all declared namespaces of a DOMElement
- by soulmerge
I am using the DOM extension to parse an xml file containing xml namespaces. I would have that namespace declarations are treated just like any other attribute, but my tests seem to disagree. I have a document that starts like this:
<rdf:RDF
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns="http://purl.org/rss/1.0/"
xmlns:taxo="http://purl.org/rss/1.0/modules/taxonomy/"
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:syn="http://purl.org/rss/1.0/modules/syndication/"
xmlns:prism="http://purl.org/rss/1.0/modules/prism/"
xmlns:admin="http://webns.net/mvcb/"
>
And a test code like this:
$doc = new DOMDocument();
$doc->loadXml(file_get_contents('/home/soulmerge/tmp/rss1.0/recent.xml'));
$root = $doc->documentElement;
var_dump($root->tagName);
# prints 'string(7) "rdf:RDF"'
var_dump($root->attributes->item(0));
# prints 'NULL'
var_dump($root->getAttributeNode('xmlns'));
# prints 'object(DOMNameSpaceNode)#3 (0) {}'
So the questions are:
Does anyone know where could I find the documentation of DOMNameSpaceNode? A search on php.net does not yield any useful result.
How do I extract all those namespace declarations from that DOMElement?
