- var_export: documentation ( source)
<?php
$html = <<<HTML
<div>
<p>Paragraph one is okay </p>
<h2>This will work without problem</h2>
<p>Paragraph two is okay </p>
<h2>This heading too</h2>
<p>Paragraph one is okay </p>
<h2>This item list will work too</h2>
<p>Paragraph two is okay </p>
<h3>1. <a href="https://www.example1.com/">This wont work</a></h3>
<p>Paragraph one is okay </p>
<h3>2. <a href="https://www.example2.com/">Not working</a></h3>
<p>Paragraph two is okay </p>
<h3>3. Neither this one</h3>
<h3>But this works again</h3>
</div>
HTML;
$dom = new DOMDocument;
$dom->loadHTML($html, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
$xpath = new DOMXPath($dom);
foreach ($xpath->query("//h2 | //h3") as $node) {
echo var_export($node->nodeValue, true) . "\n";
}