php灭绝师太私密亲传面向对象(OOP)编程

php灭绝师太私密亲传面向对象(OOP)编程

<?php
class Person{
    public $Name;
    protected $Age;
    public $Job;
    //构造函数  一般用于初始化
    public function __construct($name,$age,$job){
        $this->Name = $name;
        $this->Age = $age;
        $this->Job = $job;
    }
    //对外访问方法，用于对外访问不到受保护的，及私有的属性
    public function getAge(){
        return $this->Age;
    }
}
//实例化Person 类
$wang = new Person("王小明",24,"摸鱼的");
$li = new Person("李大明",35,"凑数的");
$chen = new Person("陈楚生",36,"歌手");
$liu = new Person("刘德华",59,"演员");
//Age属性是受保护的，出本类以及派生类外，都无法访问，但是可以用访问器进行访问
// echo $wang->Age;
echo $wang->Name;
echo $wang->getAge();
echo $wang->Job;
echo "<hr/>";
echo $li->Name;
echo $li->getAge();
echo $li->Job;
echo "<hr/>";
echo $chen->Name;
echo $chen->getAge();
echo $chen->Job;
echo "<hr/>";
echo $liu->Name;
echo $liu->getAge();
echo $liu->Job;