//对象转json
class a{
   public $name = "public name";
   protected $b = 'protected name';
   private  $c = 'private name';

   public function show(){
       return $this->name;
   }
}
echo "<hr/>";
$obj = new a();
print_r($obj);
$thi = json_encode($obj);
echo $thi; 

为什么我转出来就是一个 public name的字符串