<form method="post" action="upload.php"  enctype="multipart/form-data">  <input type='file' name='file'>  <input type='submit' value='提交'>  </form>

        //引入UploadFile类         import('ORG.Net.UploadFile');         //实例化UploadFile类         $upload  = new UploadFile();         //设置文件大小         $upload -> maxSize = 3292200;         //设置文件保存规则唯一         $upload->saveRule = 'uniqid';         //设置上传文件的格式         $upload -> allowExts = array('jpg','png','jpeg');         //保存路径         $upload->savePath ='./Public/Uploads/';         //设置需要生成缩略图，仅对图像文件有效         $upload->thumb = true;         //设置需要生成缩略图的文件前缀         $upload->thumbPrefix = 'm_';  //生产缩略图也可以根据需要生成1张或多张，2张：'m_,s_'         //设置缩略图最大宽度         $upload->thumbMaxWidth = '150';//2张的不同设置：'150,200'         //设置缩略图最大高度         $upload->thumbMaxHeight = '200';         //删除原图         $upload->thumbRemoveOrigin = true;         //上传失败返回错误信息         if(!$upload->upload()){            $this->error($upload->getErrorMsg());         }else{            $this->success('上传成功');            //获取上传文件的信息            $inf= $upload->getUploadFileInfo();         }