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基于PHP 面向对象之成员方法详解

Jun 13, 2016 am 11:52 AM
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用一个列子来读解成员方法:大家可以自己动手写一写,加深理解。

这样一个需求; 希望人可以说话, 做算术题.......,这样就需要使用到成员方法:
1、添加speak 成员方法,输出 我是小明
2、添加jisuan 成员方法,可以计算从 1+..+1000的结果
3、修改jisuan 成员方法,该方法可以接收一个数n,计算 1+..+n 的结果
4、添加add 成员方法,可以计算两个数的和

参考代码:

复制代码 代码如下:


    class Person{

        public $name;
        public $age;

        //添加成员方法
        public function speak(){

            echo "我是小明";
        }

        public function jisuan(){
            //计算从 1+..+1000的结果
            $result =0;
            for($i=1;$i                $result+=$i;
            }
            //把计算结果ruturn 返回
            return $result;
        }

        public function jisuan2($n){
            //计算从 1+..+n的结果
            $result=0;
            for($i=1;$i                $result+=$i;
            }
            //return
            return $result;
        }

        //计算2个数的和
        public function add($num1,$num2){
            return $num1+$num2;
        }
    }

    $person1=new Person;
    //人说话
    $person1->speak().'
';
    //计算
    echo '
'.$person1->jisuan();
    //echo '
'.$person1->jisuan(100);
    //带参数的
    echo '计算的结果是:'.$person1->jisuan2(5);
    //计算2个数的和
    echo "
50+50=".$person1->add(50,51);
?>


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