3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class MyElement extends DOMElement { } // #1 - okay $dom = new DOMDocument(); $e = new MyElement("e"); $dom->appendChild($e); echo get_class($dom->childNodes->item(0)) . "\n"; // #2 - wrong $dom = new DOMDocument(); $dom->appendChild(new MyElement("e")); echo get_class($dom->childNodes->item(0)) . "\n"; // #3 - wrong $dom = new DOMDocument(); $e = new MyElement("e"); $dom->appendChild($e); echo get_class($dom->childNodes->item(0)) . "\n"; $e = null; echo get_class($dom->childNodes->item(0)) . "\n";
Output for 5.0.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
MyElement DOMElement MyElement DOMElement
Output for 4.3.2 - 4.4.9
Fatal error: Class myelement: Cannot inherit from undefined class domelement in /in/RbvZX on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Class myelement: Cannot inherit from undefined class domelement in /in/RbvZX on line 2