AR查询返回数据类型问题？ [ 2.0 版本 ]

CREATE TABLE tbl_temp (
id int(11) NOT NULL,
name varchar(64) NOT NULL,
value int(10) UNSIGNED NOT NULL,
count int(10) UNSIGNED NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

            $model1 = \app\models\Temp::find()->asArray()->one();
            var_dump($model1);
            $model2 = \app\models\Temp::find()->one();
            $a = \yii\helpers\ArrayHelper::toArray($model2);
            var_dump($a);
            echo \yii\helpers\Json::encode($a);

/home/x201/PhpstormProjects/myblog/views/site/index.php:25:
array (size=4)
'id' => string '1' (length=1)
'name' => string 'aaa' (length=3)
'value' => string '123' (length=3)
'count' => string '456' (length=3)
/home/x201/PhpstormProjects/myblog/views/site/index.php:28:
array (size=4)
'id' => int 1
'name' => string 'aaa' (length=3)
'value' => int 123
'count' => int 456

{"id":1,"name":"aaa","value":123,"count":456}

没有遇到楼主的问题啊，楼主怎么试出来的？