Voir aussi les Interfaces SPL ainsi que les classes réservées. &language.predefined.traversable; &language.predefined.iterator; &language.predefined.iteratoraggregate; &language.predefined.throwable; &language.predefined.arrayaccess; &language.predefined.serializable; &language.predefined.closure; &language.predefined.generator; &language.predefined.fiber; &language.predefined.weakreference; &language.predefined.weakmap; &language.predefined.stringable; &language.predefined.unitenum; &language.predefined.backedenum;