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<?php $dom = new DOMDocument(); $dom->registerNodeClass('DOMElement', 'MyElement'); $dom->appendChild($dom->createElement('Foo', 'Bar')); echo $dom->documentElement->UNKNOWN_PROPERTY = ':-)';
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: DOMDocument::registerNodeClass(): Argument #2 ($extendedClass) must be a valid class name or null, MyElement given in /in/gAWdv:4 Stack trace: #0 /in/gAWdv(4): DOMDocument->registerNodeClass('DOMElement', 'MyElement') #1 {main} thrown in /in/gAWdv on line 4
Process exited with code 255.

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