org\upload\driver\qiniu\QiniuStorage::del PHP Method

    public function del($file)
    {
        $key = trim($file);
        $url = "{$this->QINIU_RS_HOST}/delete/" . self::qiniuEncode("{$this->bucket}:{$key}");
        $accessToken = $this->accessToken($url);
        $response = $this->request($url, 'POST', ['Authorization' => "QBox {$accessToken}"]);
        return $response;
    }