PHP object directly accesses private properties_PHP tutorial

PHP object directly accesses private properties

 
<?php
 
    header("content-type:text/html;charset=UTF-8");
    class Person{
        //私有的成员属性,对直接访问象
        private $name;
        private $age;
        private $sex;
         
        //魔术方法 __construct(), __set(), __unset(), __isset(), __unset().....
        function __construct($name="name1",$age =20,$sex="女"){
            $this->name=$name;
            $this->age=$age;
            $this->sex=$sex;
        }
         
        /*
            输出 Cannot access private property Person::$name
             
            对象不能直接访问和设置私有属性的值，但是通过魔术方法__get($proName), __set($proName,$proValue)可以做到.
            步骤：
                1.重写魔术方法__get($property) , __set($proName,$proValue)
                2.用对象直接访问或设置私有属性
                    $p1->name="对象直接访问私有属性";
                    echo $p1->name;
                3.对象直接访问或设置私有属性时，会自动调用魔法方法__get($proName), __set($proName,$proValue)
        */
        function __get($proName){
            return $this->$proName;
        }
         
        function __set($proName,$proValue){
            $this->$proName=$proValue;
        }
         
        function say(){
            echo "$this->name:我的年龄$this->age,性别:$this->sex<br>";
        }
         
        function run(){
            $this->left();
            $this->right();
        }
         
        private function left(){
            echo "left";
        }
         
        private function right(){
            echo "right";
        }
         
        //析构方法，对象销毁前自动调用
        function __destruct(){
            echo "$this->name:我走了<br>";
        }
    }
      
    $p1 = new Person("name1",15,"女");
    $p2 = new Person("name2",20,"男");
    $p3 = new Person("name3",30,"女");
     
     
     
     
    /*
        对象直接访问或设置私有属性
    */
    $p1->name="对象直接访问私有属性";
    echo $p1->name."<br>";
     
    /*
    输出,注意__destruct()的输出顺序
     
        name1:我的年龄15,性别:女
        name2:我的年龄20,性别:男
        name3:我的年龄30,性别:女
         
        name1:我走了
        name3:我走了
        name2:我走了
    */
    $p1->say();
    $p2->say();
    $p3->say();
    $p1=null;
     
     
?>

http://www.bkjia.com/PHPjc/1061538.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1061538.htmlTechArticlephp object directly accesses private properties?php header(content-type:text/html;charset=UTF-8) ; class Person{ //Private member attributes, for direct access like private $name; private $age; private...