PHP设计模式之-----简单工厂模式

<?php
/*
 * 简单的工厂模式
 * */
interface Transport{
	public function go();

}

class Bus implements Transport{
	public function go(){
		echo "bus每一站都要停";
	}
}

class Car implements Transport{
	public function go(){
		echo "car跑的飞快";
	}
}

class Bike implements Transport{
	public function go(){
		echo "bike比较慢";
	}
}

class transFactory{
	public static function factory($transport)
	{

		switch ($transport) {
			case 'bus':
				return new Bus();
				break;

			case 'car':
				return new Car();
				break;
			case 'bike':
				return new Bike();
				break;
		}
	}
}

$transport=transFactory::factory('car');
$transport->go();