tp5下的文件上传与下载类

 class FieldInterfun extends Controller
 {
     /**
      * [upload 上传文件]
      * @param  [type]  $file [description]
      * @param  string  $name [指定文件夹]
      * @return [type]        [description]
      */
     public function upload($file,$name='img'){
         $data=['code'=>2,'msg'=>'','path'=>''];
         $movefile="upload/".$name;
         // 移动到框架应用根目录/public/uploads/ 目录下
         if($file && count($file)==1){
             $info = $file->move($movefile);
             if($info){
                 $data['code']=1;
                 $data['msg']='上传成功';
                 $path='\\'.$movefile.DS.$info->getSaveName();
                 $path       = strtr($path,'\\','/');
                 $data['path']=$path;
                 $ext=$info->getExtension();
                 $getInfo=$info->getInfo();
                 $data['file_type']=$getInfo['type'];
                 // $file_typeD=explode('/', $getInfo['type']);
                 // $data['file_type']=$file_typeD[0]=='application'?'file':$file_typeD[0];
                 // if($ext=='zip')
                 // {
                 //     $data['file_type']='zip';
                 // }
                 //
                 $data['ext']=$ext;
             }else{
                 echo '<pre>';
                 var_dump($file);
                 $data['msg']=$file->getError();
             }
         }else{

         }
         return $data;
     }

     /**
      * [download 文件下载]
      * @param  [type] $file_url [description]
      * @param  string $new_name [description]
      * @return [type]           [description]
      */
     public function download($file_url,$new_name=''){
         if(!isset($file_url)||trim($file_url)==''){
           echo '500';
         }
         if(!file_exists($file_url)){ //检查文件是否存在
           echo '404';
         }
         $file_name=basename($file_url);
         $file_type=explode('.',$file_url);
         $file_type=$file_type[count($file_type)-1];
         $file_name=trim($new_name=='')?$file_name:urlencode($new_name);
         $file_type=fopen($file_url,'r'); //打开文件
         //输入文件标签
         header("Content-type: application/octet-stream");
         header("Accept-Ranges: bytes");
         header("Accept-Length: ".filesize($file_url));
         header("Content-Disposition: attachment; filename=".$file_name);
         //输出文件内容
         echo fread($file_type,filesize($file_url));
         fclose($file_type);
     }

 }