PHP类与Json的问题

可是为什么我照这个写的

```

<?php
class muke{
    public $name = "protect Name";
    protected $ptName = "protected Name";
    private $pvName = "private Name";
    
    public function getName($name){
        return $this->name;
    }
}

    $mukeObj = new muke();
    
    $obj2Json = json_encode($mukeObj);
    echo $obj2Json
?>

```

运行结果是这样呢

```

name; } } $mukeObj = new muke(); $obj2Json = json_encode($mukeObj); echo $obj2Json ?>

```