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2019.6.13作业
关超的博客
Original
624 people have browsed it

6月13日作业

  1. 编写一个类,例如学生类,商品类, 体会private, protected, public的作用


class Student

{

    public $name; 

    public $age; 

    private $sex;    

     public function __construct($name, $age, $sex)

    {

        $this->name = $name;

        $this->age = $age;

        $this->sex= $sex;

    }


    public function getSex(){

        return $this->sex

    }

}


$student= new Student('chao','30','男');

echo $student->name, '<br>';

echo $student->age, '<br>';

echo $student->getSex();


  1.  实例演示类的继承环境中, 对封装成员访问的权限控制技术,要求用到protected, extends, 以及获取器方法



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