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<?php class Mammal { function mate(Mammal $with) { $class = substr(get_class($this), 0, -1) . substr(get_class($with), 1); eval("class $class extends Mammal {}"); return new $class; } } class Cheval extends Mammal {} class Poney extends Mammal {} $mingmong = new Cheval; $charles = new Poney; $charlimong = $mingmong->mate($charles); var_dump($charlimong);
Output for git.master, git.master_jit, rfc.property-hooks
object(Chevaoney)#3 (0) { }

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