德玛西亚---简单工厂模式---PHP实现

英雄联盟系列，鸣谢【大话设计模式】大鸟与小菜

首先 看图听故事，

image.png

如采用活字印刷术：

image.png
image.png

================================================================

看图听故事环节结束

好想是get到了什么 ，那么。。。。。。先写一个【菜鸡版本】
coding............................
ok，六多兰剑盖伦出世

class Operation
{
    public $intNumberA;
    public $intNumberB;
    public $operator;

    public function validation($intNumberA, $intNumberB)
    {
        if ((is_int($intNumberA) && is_int($intNumberB)) == false) {
            return "所输入值非int";
        }
    }

    public function evaluation($intNumberA,  $intNumberB,  $operator)
    {
        $this->validation($intNumberA, $intNumberB);

        switch ($operator)
        {
            case "+":
                return $intNumberA + $intNumberB;
            case "-":
                return $intNumberA - $intNumberB;
            case "*":
                return $intNumberA * $intNumberB;
            case "/":
                if ($intNumberB == 0) {
                    return "0不能当分母！";
                } else {
                    return $intNumberA / $intNumberB;
                }
            default :
                return "暂未支持该运算";
        }
    }
}

$objectOperation = new Operation();

echo $objectOperation->evaluation(1, 2, '/');

好像对于实现功能来说 没啥问题了。
但是。。。没达到类似于活体印刷术的级别
也就是说 我6多兰的盖伦 被！单！杀！了！
叔可忍，他大娘都不能忍。
祭出大杀器---无尽之刃、饮血剑、阿塔玛之戟、幻影之舞、狂徒铠甲、自然之力
（面向对象思想 and 简单工厂模式）

coding...........................................

class Operation
{
    public $intNumberA;
    public $intNumberB;
    public $operator;

    public function validation($intNumberA, $intNumberB)
    {
        if ((is_int($intNumberA) && is_int($intNumberB)) == false) {
            return false;
        }
    }
}

class OperationAdd extends Operation
{
    public function __construct($intNumberA = 0, $intNumberB = 0)
    {
        $this->validation($intNumberA, $intNumberB);
    }

    public function getResult($intNumberA, $intNumberB)
    {
        return $intNumberA + $intNumberB;
    }
}

class OperationSub extends Operation
{
    public function __construct($intNumberA = 0, $intNumberB = 0)
    {
        $this->validation($intNumberA, $intNumberB);
    }

    public function getResult($intNumberA = 0, $intNumberB = 0)
    {
        return $intNumberA - $intNumberB;
    }
}

class OperationMul extends Operation
{
    public function __construct($intNumberA = 0, $intNumberB = 0)
    {
        $this->validation($intNumberA, $intNumberB);
    }

    public function getResult($intNumberA = 0, $intNumberB = 0)
    {
        return $intNumberA * $intNumberB;
    }
}

class OperationDiv extends Operation
{
    public function __construct($intNumberA = 0, $intNumberB = 0)
    {
        $this->validation($intNumberA, $intNumberB);
    }
    
    public function getResult($intNumberA = 0, $intNumberB = 0)
    {
        if ($intNumberB == 0) {
            return "0不能当分母！";
        } else {
            return $intNumberA / $intNumberB;
        }
    }
}

class OperationFactory
{
    public function createOperation($operator)
    {
        switch ($operator)
        {
            case "+":
                $obj = new OperationAdd;
                return $obj;
            case "-":
                $obj = new OperationAdd;
                return $obj;
            case "*":
                $obj = new OperationAdd;
                return $obj;
            case "/":
                $obj = new OperationAdd;
                return $obj;
        }
    }
}

$operationFactory = new OperationFactory;
echo $operationFactory->createOperation('+')->getResult(1, 2);

all right 现在我们的德玛西亚之力 可以去1V9了

作者：mango.Young
转载请注明出处 谢谢。