public function downLoad($dataUrl,$saveName)
    {
        $datalist = [
            ROOT_PATH.'/public/introduce/110.docx',
            ROOT_PATH.'/public/upfile/110.zip'
        ];
//        print_r($datalist);die;
        $filename = ROOT_PATH.'\public\/'.$saveName.'.zip';
        if(file_exists($filename)){
            unlink($filename);
        }

        $zip = new \ZipArchive();
        if ($zip->open($filename,\ZipArchive::CREATE)!== true){
            exit('无法打开文件，或者文件创建失败');
        }

        foreach ($dataUrl as $index => $item) {
            if (DIRECTORY_SEPARATOR=='\\'){
                $item = str_replace('/',DIRECTORY_SEPARATOR,$item);
                $filename = str_replace('/',DIRECTORY_SEPARATOR,$filename);
            }
//            var_dump($item);
//            var_dump(file_exists($item));die;
            if (file_exists($item)){
                $zip->addFile($item,basename($item));
            }
        }

        $zip->close();
        if(!file_exists($filename)){
            exit("无法找到文件"); //即使创建，仍有可能失败
        }
        header('Content-Type: application/zip');
        header('Content-disposition: attachment; filename='.basename($filename));
        header('Content-Length: ' . filesize($filename));
        @readfile($filename);
　　　　　@unlink ( $filename );

}

public function unzip_file($file, $dir){ 

        // 实例化对象 

        $zip = new ZipArchive() ; 

        //打开zip文档，如果打开失败返回提示信息 

        if ($zip->open($file) !== TRUE) { 

          die ("Could not open archive"); 

        } 

        //将压缩文件解压到指定的目录下 

        $zip->extractTo($dir); 

        //关闭zip文档 

        $zip->close();  

    }

public function loopFun($dir)  

    {  

        $handle = opendir($dir.".");

        //定义用于存储文件名的数组

        $array_file = array();

        while (false !== ($file = readdir($handle)))

        {

            if ($file != "." && $file != "..") {

                $array_file[] = $dir.'/'.$file; //输出文件名

            }

        }

        closedir($handle);

        return $array_file;

        //print_r($array_file);

    }