public function ftpUpload()
    {
        $ftpfile = $_FILES['ftpfile'];
        $filecfg = C('DOWNLOAD_UPLOAD');
        $config = array(
            'maxSize'    =>   '',
            'rootPath'   =>    '',
            'savePath'   =>    '/Upload/',
            'saveName'   =>    array('uniqid', ''),
            'exts'       =>    'jpg,gif,png,jpeg,zip,rar,tar,gz,7z,doc,docx,txt,xml,ppt,pptx,xls,xlsx,pdf,tif,tiff,bmp',
            'autoSub'    =>   true,
            'subName'    =>    array('date', 'Y-m-d'),
        );

        $ftpConfig     =    array(        
                'host'     => C('FTPHOST'), //伺服器
                'port'     => C('FTPPORT'), //埠
                'timeout'  => C('FTPTIMEOUT'), //超時時間
                'username' => C('FTPUSERNAME'), //使用者名稱
                'password' => C('FTPPASSWORD'), //密碼
        );
 
        $upload = new \Think\Upload($config,'Ftp',$ftpConfig);// 例項化上傳類
        $info = $upload->uploadOne($ftpfile);
        //這裡判斷是否上傳成功
        if ($info) {
            print_r($info);
            exit();
        } else {
            //輸出錯誤資訊
            exit($upload->getError());
        }

    }
 

注意事項：  

呼叫上傳時，upload（）引數為二維陣列，uploadOne（）引數為一維陣列