工厂方法模式

• 没有做反射类检测

    $name;    }    public function __set($name, $value)    {        $this->$name = $value;    }    public function getResult()    {        return 0;    }}class OperationAdd extends Operation{    public function getResult()    {        return $this->_num1 + $this->_num2;    }    }class OperationSub extends Operation{    public function getResult()    {        return $this->_num1 - $this->_num2;    }}class OperationMul extends Operation{    public function getResult()    {        return $this->_num1 * $this->_num2;    }}class OperationDiv extends Operation{    public function getResult()    {        if (empty($this->_num2)) {            throw new Exception("除数不能为0", 1);                    }        return $this->_num1 / $this->_num2;    }}// ********** 工厂接口 - 类 ********** //Interface IFactory{    public function CreateOperation();}class AddFacroty implements IFactory{    public function CreateOperation()    {        return new OperationAdd();    }}class SubFactory implements IFactory{    public function CreateOperation()    {        return new OperationSub();    }}class MulFactory implements IFactory{    public function CreateOperation()    {        return new OperationMul();    }}class DivFactory implements IFactory{    public function CreateOperation()    {        return new OperationDiv();    }}// clienttry {    //工厂方法    $f = new AddFacroty();    $o = $f->CreateOperation();    $o->_num1 = 10;    $o->_num2 = 2;    print_r($o->getResult());} catch (Exception $e) {    echo $e->getMessage();}