批量打印桌贴

/**

 * @Author    muyuan

 * @DateTime  2018-01-13

 * @copyright [批量打印桌贴]

 * @license   [license]

 * @version   [version]

 * @param     string      $head [description]

 * @return    [type]            [description]

 */

public function downzip($head = 'b'){

    set_time_limit(0);

    ini_set('max_execution_time', '0');

    ini_set('memory_limit', '2048M');

    $datalist = [];

    $num = input('num');//num = 1000,1005

    $arr = explode(',', $num);

    $start = isset($arr[0]) ? (int)$arr[0] : 0;

    $end = isset($arr[1]) ? (int)$arr[1] : 0;

    if(!is_numeric($start) || !is_numeric($end) || $start > $end){

        echo '数据格式错误，格式为1000,1002';die;

    }

    $filename = ROOT_PATH . '/public/static/bookgo/wxapp/seatnum/done/'.$start.'-'.$end.'.zip';

    if(!file_exists($filename)){

        $py = new Python();

        for ($i=$start; $i py('wxapp.img::make_img',$head,$i);

            $fileurl = ROOT_PATH . '/public/static/bookgo/wxapp/seatnum/done/'.$i.'.png';

            $datalist[] = $fileurl;

        }

        $zip = new \ZipArchive();

        if ($zip->open($filename, \ZipArchive::CREATE)==TRUE) {

            foreach( $datalist as $val){

                if(file_exists($val)){

                    $zip->addFile( $val, basename($val));

                }

            }

            $zip->close();

        }

    }

    if(!file_exists($filename)){

        exit("无法找到文件");

    }

    header("Cache-Control: public");

    header("Content-Description: File Transfer");

    header('Content-disposition: attachment; filename='.basename($filename)); //文件名

    header("Content-Type: application/zip"); //zip格式的

    header("Content-Transfer-Encoding: binary"); //告诉浏览器，这是二进制文件

    header('Content-Length: '. filesize($filename)); //告诉浏览器，文件大小

    @readfile($filename);

}