public function actionTest()

    {

        $ak = '自己的ak';

        $sk = '自己的sk';

        $domain = '自己的地址';//在https://portal.qiniu.com/bucket/bucket/index页面查看

        $qiniu = new \crazyfd\qiniu\Qiniu($ak, $sk,$domain, '创建空间的名字','所属地区');//所属地区 华东east_china(默认),华北north_china,华南south_china,北美north_america

        $key = time();

        $qiniu->uploadFile($_FILES['file']['tmp_name'],$key);

        $url = $qiniu->getLink($key);//图片的url

        echo $url;

    }