public function __construct() { $this->_containers[] = "CD"; $this->_containers[] = "MP3Archive"; } public function change($originalObject, $newValue) { $title = $originalObject->title; $band = $originalObject->band; foreach ($this->_containers as $container) { if (!$originalObject instanceof $container) { $object = new $container(); $object->title = $title; $object->band = $band; foreach ($newValue as $key => $val) { $object->{$key} = $val; } $object->save(); } } } } //测试实例 $titleFromDB = "Waste of a Rib"; $bandFromDB = "Never Again"; $mediator = new MusicContainerMediator(); $cd = new CD($mediator); $cd->title = $titleFromDB; $cd->band = $bandFromDB; $cd->changeBandName("Maybe Once More125");