3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class Mammal { function mate(Mammal $with) { $class = substr(get_class($this), 1, -1) . substr(get_class($with), 1); eval("class $class extends Mammal {}"); return new $class; } } class Panda extends Mammal {} class Dolphin extends Mammal {} $mingmong = new Panda; $charles = new Dolphin; $charlimong = $mingmong->mate($charles); var_dump($charlimong);
based on X2cHv
Output for 5.0.0 - 7.1.0
object(andolphin)#3 (0) { }
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting ')' in /in/IUpol on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting ')' in /in/IUpol on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/IUpol on line 4
Process exited with code 255.