class Person{
    public $name;
    public $age;
    
    function __construct($name,$age){
      $this->name=$name;
      $this->age=$age;
    }
}

class Person{
    public $name;
    public $age;
    
    function __destruct(){
    echo "这个对象被销毁了";
  }
}

class Person{
    private $name;
    public $age;
    
    function __get($name){
     return $this->$name;
    }
}

class Person{
    private $name;
    public $age;
    
    function __set($key,$value){
      $this->$key=$value;
    }
}

class Person{
    private $name;
    public $age;
    
    function __isset($name){
    return isset($this->$name);
  }
}

class Person{
    private $name;
    public $age;
    
    function __unset($name){
      unset($this->$name);
    }
}

class Person{
    public $name;
    public $age;
    
    function __toString(){
      $str = <<<str
      您要打印的内容是：<br>
      \$name=>{$this->name};<br>
      \$age=>{$this->age};<br>
str;
      return $str;
    }
}

class Person{
    public $name;
    public $age;
    
    function __call($funcName,$funcParams){
      echo "您调用的函数{$funcName}，参数列表";
      print_r($funcParams);
      echo "不存在/未公开";
    }
}
$zhangsan=new Person();
$zhangsan->say(1,2,3);

class Person{
    public $name;
    public $age;
    
    function __clone(){
    $this->name="lisi";
    }
}  
$zhangsan=new Person("zhangsan",24);
$lisi=clone $zhangsan;
echo $lisi->name;

class Person{
    public $name;
    public $age;
    
   function __sleep(){
    return array("name","age");
  }
}

class Person{
    public $name;
    public $age;
    
   function __wakeup(){
    $this -> name = "lisi";
  }
}

function __autoload($className){
  include "class/".strtolower($className).".class.php";
}
  
$zhangsan=new Person();
$zhangsan->say();