php抽象工厂模式

1.抽象工厂模式简介

   抽象工厂是工厂方法的升级版，为相关或者相互依赖的对象提供一个接口，而且无效指定他们的具体实现类。

2.源码实现

<?php

/*抽象产品A*/
interface AbstractProductA {
    public function getName();
}

/*抽象产品B*/
interface AbstractProductB {
    public function getName();
}

/*具体产品A1*/
class ProductA1 implements AbstractProductA {
    private $_name;

    public function __construct()
    {
        $this->_name = 'Product A1';
    }

    public function getName()
    {
        return  $this->_name;
    }
}

/*具体产品A2*/
class ProductA2 implements AbstractProductA {
    private $_name;

    public function __construct()
    {
        $this->_name = 'Product A2';
    }

    public function getName()
    {
        return  $this->_name;
    }
}

/*具体产品B1*/
class ProductB1 implements AbstractProductB {
    private $_name;

    public function __construct()
    {
        $this->_name = 'Product B1';
    }

    public function getName()
    {
        return  $this->_name;
    }
}

/*具体产品B2*/
class ProductB2 implements AbstractProductB {
    private $_name;

    public function __construct()
    {
        $this->_name = 'Product B2';
    }

    public function getName()
    {
        return  $this->_name;
    }
}

/*抽象工厂*/
interface AbstractFactory {
    public function createProductA();
    public function createProductB();
}

/*具体工厂1*/
class ConcreteFactory1 implements AbstractFactory {
    public function createProductA()
    {
        return new ProductA1();
    }

    public function createProductB()
    {
        return new ProductB1();
    }
}

/*具体工厂2*/
class ConcreteFactory2 implements AbstractFactory {
    public function createProductA()
    {
        return new ProductA2();
    }

    public function createProductB()
    {
        return new ProductB2();
    }
}

/*客户端*/
class Client {
    public static function main()
    {
        self::run(new ConcreteFactory1());
        self::run(new ConcreteFactory2());
    }

    public static function run(AbstractFactory $factory)
    {
        $productA = $factory->createProductA();
        $productB = $factory->createProductB();

        echo $productA->getName()."\n";
        echo $productB->getName()."\n";
    }
}

Client::main();

?>

3.运行及其结果

$ php example.php
Product A1
Product B1
Product A2
Product B2