PHP中__set __get方法，自定义set get方法

<?php
    class Myfun{
        private $name;
        function __set($pro_name,$pro_value){
                $this->$pro_name = $pro_value;
        }
        function __get($pro_name){
            if(isset($pro_name)){
                return $this->$pro_name;    
            }else{
                return null;    
            }
        }    
    }
    
    $m = new Myfun();
    $m->name = "张三";
    echo "你的名字：".$m->name;
    echo "<hr>";
    
    
    class Test{
        private $name;
        public function getName(){
            return $this->name;    
        }
        public function setName($name){
            $this->name = $name;
        }
    }
    $t = new Test();
    $t->setName("lisi");
    echo $t->getName();
 ?>