Code example of Thinkphp batch downloading pictures and files

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Release: 2023-04-03 15:46:02
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This article brings you code examples about Thinkphp batch downloading of images and files. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

//批量下载图片
    public function download_img_all(){
        $dfile = tempnam('./public/upload/qr_code/', 'tmp');//产生一个临时文件,用于缓存下载文件
        $zip = new Zipfile();
        $filename = 'erweima'.'.zip'; //下载的默认文件名
        // $image  = M('Device')->field('erweima')->select();
        // foreach($image as $v){
        //     $image_path = './public/upload/qr_code/';方法一
        //      $zip->add_path($image_path);
        //      // $zip->add_file(file_get_contents($v['erweima']), $v['erweima']);
        //      // 添加打包的图片,第一个参数是图片内容,第二个参数是压缩包里面的显示的名称, 可包含路径
        //      // 或是想打包整个目录 用 
        // }
        $image_path = './public/upload/qr_code/';//方法二
        $zip->add_path($image_path);
        $zip->output($dfile);
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  // 下载文件
        ob_clean();
        header('Pragma: public');
        header('Last-Modified:'.gmdate('D, d M Y H:i:s') . 'GMT');
        header('Cache-Control:no-store, no-cache, must-revalidate');
        header('Cache-Control:pre-check=0, post-check=0, max-age=0');
        header('Content-Transfer-Encoding:binary');
        header('Content-Encoding:none');
        header('Content-type:multipart/form-data');
        header('Content-Disposition:attachment; filename="'.$filename.'"'); //设置下载的默认文件名
        header('Content-length:'. filesize($dfile));
        $fp = fopen($dfile, 'r');
        while(connection_status() == 0 && $buf = @fread($fp, 8192)){
         echo $buf;
        }
        fclose($fp);
        @unlink($dfile);
        @flush();
        @ob_flush();
        exit();
    }
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