(PHP 8 >= 8.3.0)
DOMNode::contains — Checks if node contains other node
   Checks if node contains other node.
  
otherNode to be checked.
Beispiel #1 DOMNode::contains() example
<?php
$dom = new DOMDocument();
$dom->loadXML(<<<XML
<!DOCTYPE HTML>
<html>
   <body>
       <main>
           <p>Hello, world!</p>
       </main>
   </body>
</html>
XML);
$xpath = new DOMXPath($dom);
$main = $xpath->query("//main")[0];
var_dump($dom->documentElement->contains($main));
?>Das oben gezeigte Beispiel erzeugt folgende Ausgabe:
bool(true)
