Tiniest Event Dispatcher

<?php class D{private $ls = [];public function dispatch($es){if(!is_array($es)){$this->f($es);}foreach($es as $e){$this->f($e);}}public function listenOn($n,$l){$this->al($n,$l);}private function f($e){$ls=$this->gl($e->getName());if(!$ls)return;foreach($ls as $l){$l->handle($e);}}private function gl($n){if(!$this->hl($n))return;return $this->ls[$n];}private function hl($n){return isset($this->l[$n]);}private function al($n,$l){$this->ls[$n][] = $l;}}