七牛云存储

composer require itbdw/laravel-storage-qiniu
function qiniu(Request $request){

    $disk = Storage::disk('qiniu'); //使用七牛云上传

    $time = date('Y-m-d');

    $filename = $disk->put($time, $request->file('avatar'));//上传 这里的file是前端的name值，自己来定

    if(!$filename) {
        echo "上传失败";
    }

    $img_url = $disk->getDriver()->downloadUrl($filename); //获取下载链接

    return $img_url;
}

composer require mews/captcha