上传文件到七牛最简单的方式就是使用七牛官方最新的SDK

安装PHP SDK

```composer require qiniu/php-sdk
```

上传文件到七牛

use Qiniu\Auth;

use Qiniu\Storage\UploadManager;

$cfg = [

  'access' => 'YOUR_ACCESS_KEY',

  'secret' => 'YOUR_SECRET_KEY',

  'bucket' => 'YOUR_BUCKET',

  'domain' => 'https://images.your_domain.com'

];

$auth = new Auth($cfg['access'], $cfg['secret']);

// 创建一个过期时间为1小时的临时上传令牌

$token = $auth->uploadToken($cfg['bucket'], null, 3600);

$filePath = "./illustration.png";

$uploadMgr = new UploadManager();

list($ret, $err) = $uploadMgr->putFile($token, null, $filePath);

if($err !== null) {

    $this->err = $err;

} else {

    echo $cfg['domain'] . '/' . $ret['key'];

}

搞定！

原文地址：https://segmentfault.com/a/1190000015753617