Question

I need work with namespaces on XML from a code and do something with it. For instance:

    <system:include file="./test.php" cache="true" />

That would be the final output of the content, but it is necessary to process the special tags (like the system:include) before send to client.

So I will get all elements of final output to search about namespaced tags or specific ones. The problem is that if I use DOMDocument and read like XML, I have some problems with namespaces declaration (Namespace prefix system on include is not defined in Entity).

My test code is:

<?php

    $document = new DOMDocument();
    $document->loadXML('
        <system:include file="./test.php" cache="true" />
    ');

    foreach($document->childNodes as $node) {
        var_dump($node->nodeName);
    }

?>

I need do it because I need process some special tags and converts it to real HTML. For instance: convert <b> to <strong> (just an example!) or make something better like include and cache a specific page using tags.

Another example:

<h7>Hello World!</h7>

Converts to:

<div class="h7">Hello World!</div>

Note: the ob contents will be sent to a specific method that will search by this special tags. So I don’t know if I can make namespaces declaration before (will be hard and slowly, probably).

Bye!

Answer 1

I can get it to work if I specify a root element in the XML, and then declare the system namespace inside the root element. <root xmlns:system="system">...</root>

<?php

function dump($root) {
    foreach($root->childNodes as $node) {
        echo $node->nodeName;
        echo "\n";
        dump($node);
    }
}

$doc = new DOMDocument();
$doc->loadXML('<root xmlns:system="system"><system:include file="./test.php" cache="true" /></root>');

dump($doc);

?>