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run code in 300+ PHP versions simultaneously
<?phpclass MyElement extends \DOMElement { public function __get($name) { return $this->$name; }}$dom = new DOMDocument();$dom->registerNodeClass('DOMElement', 'MyElement');$dom->appendChild($dom->createElement('Foo', 'Bar'));echo $dom->documentElement->nodeValue;
Output for 5.4.0 - 5.4.32, 7.2.29 - 7.2.33, 7.3.16 - 7.3.31, 7.4.3 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
<?phpclass MyElement extends \DOMElement { public function __get($name) { return $this->$name; }}$dom = new DOMDocument();$dom->registerNodeClass('DOMElement', 'MyElement');$dom->appendChild($dom->createElement('Foo', 'Bar'));echo $dom->documentElement->nodeValue;
Output for 8.0.13
Parse error: syntax error, unexpected identifier "MyElement" in /in/ZJX9R on line 1
Process exited with code 255.
Output for 5.4.34, 7.3.32 - 7.3.33, 7.4.33
Parse error: syntax error, unexpected 'MyElement' (T_STRING) in /in/ZJX9R on line 1
Process exited with code 255.

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