thinkphp5.1 用array_column函数出错expects parameter 1 to be array, object given

$goods = \app\common\model\Goods::with('goods_images,spec_goods')->find($id);
 $goods['spec_goods']=(new \think\Collection($goods['spec_goods']))->toArray();
         $value_ids = array_unique(explode('_', implode('_', array_column($goods['spec_goods'], 'value_ids'))));

可以先将查询到的数据转换成数组