- var_dump: documentation ( source)
- libxml_use_internal_errors: documentation ( source)
<?php
$html = '<div class="something-first">
<div class="something-child something-good another something-great">
<my:text value="huhu">
</div>
</div>';
libxml_use_internal_errors(true);
$domDoc = new DOMDocument();
$domDoc->formatOutput = false;
$domDoc->resolveExternals = false;
$domDoc->substituteEntities = false;
$domDoc->strictErrorChecking = false;
$domDoc->validateOnParse = false;
$domDoc->loadHTML($html/*, LIBXML_NOERROR | LIBXML_NOWARNING*/);
$xpath = new DOMXPath($domDoc);
$xpath->registerNamespace ( 'my', 'http://www.example.com/' );
// -----> This results in zero nodes cause namespace gets stripped by loadHTML()
$nodes = $xpath->query('//text');
var_dump($nodes);