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<?php $root = new DOMDocument(); $root->loadXML('<article id=""></article>'); $node = new DOMDocument(); $node->loadXML('<section><h1>Überschrift1</h1><h2>Überschrift2</h2><p>Content</p></section>'); $node = $root->importNode($node->documentElement, true); $root->documentElement->appendChild($node); $node = $root->importNode($node->documentElement, true); $root->documentElement->appendChild($node); print $root->saveXML();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Warning: Undefined property: DOMElement::$documentElement in /in/TR5fb on line 11 Fatal error: Uncaught TypeError: DOMDocument::importNode(): Argument #1 ($node) must be of type DOMNode, null given in /in/TR5fb:11 Stack trace: #0 /in/TR5fb(11): DOMDocument->importNode(NULL, true) #1 {main} thrown in /in/TR5fb on line 11
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Notice: Undefined property: DOMElement::$documentElement in /in/TR5fb on line 11 Fatal error: Uncaught TypeError: Argument 1 passed to DOMDocument::importNode() must be an instance of DOMNode, null given in /in/TR5fb:11 Stack trace: #0 /in/TR5fb(11): DOMDocument->importNode(NULL, true) #1 {main} thrown in /in/TR5fb on line 11
Process exited with code 255.
Output for 7.3.32 - 7.3.33, 7.4.26
Fatal error: Uncaught TypeError: Argument 1 passed to DOMDocument::importNode() must be an instance of DOMNode, null given in /in/TR5fb:11 Stack trace: #0 /in/TR5fb(11): DOMDocument->importNode(NULL, true) #1 {main} thrown in /in/TR5fb on line 11
Process exited with code 255.

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