PHP策略模式教程

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1、创建抽象策略接口

interface GoodsStrategy{
    public function modifyState();
}

2、编写需要的算法类

class SupplerCommodityPoolClass implements GoodsStrategy{
    protected $goodsObj;
    protected $publicGoodsSaveObj;

    public function __construct(PublicGoodsSave $publicGoodsSaveObj,Goods $goodsObj)
    {
        $this->publicGoodsSaveObj = $publicGoodsSaveObj;
        $this->goodsObj = $goodsObj;
    }

    public function modifyState(){
    	//做你想要的处理
    }
        
}
class SupplerCommodityPoolClass_1 implements GoodsStrategy{
    protected $goodsObj;
    protected $publicGoodsSaveObj;

    public function __construct(PublicGoodsSave $publicGoodsSaveObj,Goods $goodsObj)
    {
        $this->publicGoodsSaveObj = $publicGoodsSaveObj;
        $this->goodsObj = $goodsObj;
    }

    public function modifyState(){
    	//做你想要的处理
    }
        
}
class SupplerCommodityPoolClass_2 implements GoodsStrategy{
    protected $goodsObj;
    protected $publicGoodsSaveObj;

    public function __construct(PublicGoodsSave $publicGoodsSaveObj,Goods $goodsObj)
    {
        $this->publicGoodsSaveObj = $publicGoodsSaveObj;
        $this->goodsObj = $goodsObj;
    }

    public function modifyState(){
    	//做你想要的处理
    }
        
}

3、编写配置类

class GoodsConfig{
    public $config;

    public function __construct(GoodsStrategy $config){
        $this->config = $config;
    }

    public function doWork(){
        return $this->config->modifyState();
    }
}

4、调用（客户端调用，由客户自己决定使用哪种策略，即客户自行实例化算法类）

//$reClass = new GoodsConfig(new SupplerCommodityPoolClass_1());
//$reClass = new GoodsConfig(new SupplerCommodityPoolClass_2());等
$reClass = new GoodsConfig(new SupplerCommodityPoolClass());
$reClass->doWork();

这样就完美的实现了策略模式

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