PHP上传文件到七牛（Qiniu）

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！