工厂模式

简单工厂模式

• 自行车类

class Bicycle
{
    public function driveTo($destionation)
    {
        echo '骑车到 '.$destionation.PHP_EOL;
    }
}

• 工厂类

class SimpleFactory
{
    public function createBicycle()
    {
        $bicycle = new Bicycle();
        return $bicycle;
    }
}

$factory = new SimpleFactory();
$bicycle = $factory->createBicycle();
$bicycle->driveTo('北京'); // 骑车到 北京

抽象工厂模式

• 自行车类

class Bicycle
{
    public function driveTo($destionation)
    {
        echo '骑车到 '.$destionation.PHP_EOL;
    }
}

• 抽象工厂类

abstract class Factory
{
    abstract public function createVehicle();
}

• 自行车工厂类

class BicycleFactory extends Factory
{
    public function createVehicle()
    {
        $bicycle = new Bicycle();
        return $bicycle;
    }
}

$factory = new BicycleFactory();
$bicycle = $factory->createVehicle();
$bicycle->driveTo('巴黎'); // 骑车到 巴黎