php DOMElement appendchild

Question

Is there a way to append a DOMElement directly with another DOMElement without going through a DOMDocument . I'm trying to make a navigation menu that can be used my another class that houses the DOMDocument .

        $navItem= new \DOMElement('li');
        $domElement = new \DOMElement('ul');
        $domElement->appendChild($navItem);

The DOMElement class does extend the DOMNode class so it does inherit all of the public methods from DOMNode . So in the example above it should be capable of appending the $navItem to the $domElement .

Instead it returns

Uncaught exception 'DOMException' with message 'No Modification Allowed Error' in /redacted/navigation.php:15

Please help me.

Answer 1

From http://php.net/manual/en/domelement.construct.php

Creates a new DOMElement object. This object is read only. It may be appended to a document, but additional nodes may not be appended to this node until the node is associated with a document. To create a writeable node, use DOMDocument::createElement or DOMDocument::createElementNS .

Hope this helps you