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);
    }


    
}