ThinkPHP 多图片上传

public function feedback(){
        $loginck = A(\'Index\')->check();
        
        //模块
        $adminmodule = session(\'adminmodule\');
        //权限
        $adminaccess = session(\'adminaccess\');
        //管理员id
        $adminid = session(\'adminid\');
        
        $userquestion = D(\'userquestion\');
        if($_GET[\'id\'])
        {
            $data = $userquestion->get_question($_GET[\'id\']);
            //判断此用户是否存在问题   和   此用户是否已经解答问题
            if(!$data || $data[\'state\'] == 1){
                $this->error(\'未获得此用户问题\');exit;
            }
        }
        //提交反馈答案
        if($_POST)
        {
            
            if($_POST[\'answer\'] == \'\' ){
                $this->error(\'未填写内容\');exit;
            }
            
            //上传多文件
            $var = $_FILES[\'photo\'][\'name\'];
            //删除空着的图片
            $var = array_filter($var);
            //不够3张
            if(count($var)<3){
                $this->error(\'图片上传不够3张\');exit;
            }
            import(\'ORG.Net.UploadFile\');
            $upload = new \Org\Net\UploadFile();
            
            foreach ($_FILES as $key=>$file)
            {
                if(!empty($file[\'name\']))
                {
                    $upload->allowExts  = array(\'jpg\', \'gif\', \'png\',\'jpeg\');
                    $upload->savePath =  \'./Public/uploads/user/\'.$_POST[\'uid\'].\'/\';        
                    $info =  $upload->uploadOne($file);
                    if(!$info)
                    { // 保存附件信息
                        $this->error($upload->getErrorMsg());die;
                    }
                }
            }
            $dir=\'./Public/uploads/user/\'.$_POST[\'uid\'].\'/\';
            $file=scandir($dir);
            $savename = $file[2].\',\'.$file[3].\',\'.$file[4].\',\';

            $save = array();
            $save[\'aid\'] = $adminid;
            $save[\'state\'] = 1;
            $save[\'answer\'] = $_POST[\'answer\'];
            $save[\'pic\'] = $savename;
            $rs = $userquestion->add_answer($_POST[\'uid\'],$save);
            if(!$rs){
                $this->error(\'反馈信息失败，请重试\');exit;
            }
            //反馈成功修改用户表用户状态
            $customer = D(\'customer\');
            $customer->updatastate($_POST[\'uid\'],array(\'state\'=>\'6\'));
            //修改申请表用户状态
            $claim = D(\'claim\');
            $rs1 = $claim->save_claim($_POST[\'uid\'],6);
            
            $this->success(\'反馈信息成功\',U(\'Cadmin/user_confirmlist\'));exit;
            
        }
        $this->assign(\'data\',$data);
        $this->display(\'Cadmin/feedback\');
    }