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run code in 150+ php & hhvm versions
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<?php class MyElement extends \DOMElement { public function __get($name) { return $this->$name; } } $dom = new DOMDocument(); $dom->registerNodeClass('DOMElement', 'MyElement'); $dom->appendChild($dom->createElement('Foo', 'Bar')); var_dump($dom->documentElement); echo $dom->documentElement->nodeValue;
Output for 5.3.11 - 5.3.29, 5.4.1 - 5.6.28, 7.0.0 - 7.1.0
object(MyElement)#2 (17) { ["tagName"]=> string(3) "Foo" ["schemaTypeInfo"]=> NULL ["nodeName"]=> string(3) "Foo" ["nodeValue"]=> string(3) "Bar" ["nodeType"]=> int(1) ["parentNode"]=> string(22) "(object value omitted)" ["childNodes"]=> string(22) "(object value omitted)" ["firstChild"]=> string(22) "(object value omitted)" ["lastChild"]=> string(22) "(object value omitted)" ["previousSibling"]=> NULL ["attributes"]=> string(22) "(object value omitted)" ["ownerDocument"]=> string(22) "(object value omitted)" ["namespaceURI"]=> NULL ["prefix"]=> string(0) "" ["localName"]=> string(3) "Foo" ["baseURI"]=> NULL ["textContent"]=> string(3) "Bar" } Bar
Output for hhvm-3.12.0
object(MyElement)#2 (18) { ["nodeName"]=> string(3) "Foo" ["nodeValue"]=> string(3) "Bar" ["nodeType"]=> int(1) ["parentNode"]=> string(22) "(object value omitted)" ["childNodes"]=> string(22) "(object value omitted)" ["firstChild"]=> string(22) "(object value omitted)" ["lastChild"]=> string(22) "(object value omitted)" ["previousSibling"]=> NULL ["nextSibling"]=> NULL ["attributes"]=> string(22) "(object value omitted)" ["ownerDocument"]=> string(22) "(object value omitted)" ["namespaceURI"]=> NULL ["prefix"]=> string(0) "" ["localName"]=> string(3) "Foo" ["baseURI"]=> NULL ["textContent"]=> string(3) "Bar" ["tagName"]=> string(3) "Foo" ["schemaTypeInfo"]=> NULL } Bar
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.3.0 - 5.3.10, 5.4.0
object(MyElement)#2 (0) { } Bar
Output for 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/at8KJ on line 2 object(MyElement)#2 (0) { } Bar
Output for 5.0.0 - 5.1.6
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/at8KJ on line 2 Fatal error: Call to undefined method DOMDocument::registerNodeClass() in /in/at8KJ on line 8
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/at8KJ on line 2 Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/at8KJ on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/at8KJ on line 2 Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/at8KJ on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/at8KJ on line 2 Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/at8KJ on line 3
Process exited with code 255.