php 打包下载服务器上指定目录的文件

//获取文件列表function list_dir($dir){ ???$result = array(); ???if (is_dir($dir)){ ???????$file_dir = scandir($dir); ???????foreach($file_dir as $file){ ???????????if ($file == ‘.‘ || $file == ‘..‘){ ???????????????continue; ???????????} ???????????elseif (is_dir($dir.$file)){ ???????????????$result = array_merge($result, list_dir($dir.$file.‘/‘)); ???????????} ???????????else{ ???????????????array_push($result, $dir.$file); ???????????} ???????} ???} ???return $result;}$datalist=list_dir(ROOT_PATH.‘qrcode/temp/on_sale/‘);$filename = "./qrcode/on_sale.zip"; //最终生成的文件名（含路径）if(!file_exists($filename)){ ??//重新生成文件 ??$zip = new ZipArchive();//使用本类，linux需开启zlib，windows需取消php_zip.dll前的注释 ??if ($zip->open($filename, ZIPARCHIVE::CREATE)!==TRUE) { ???????????exit(‘无法打开文件，或者文件创建失败‘); ??} ??foreach( $datalist as $val){ ??　if(file_exists($val)){ ??????????$zip->addFile( $val, basename($val));//第二个参数是放在压缩包中的文件名称，如果文件可能会有重复，就需要注意一下 ???????} ????} ??$zip->close();//关闭}if(!file_exists($filename)){ ??exit("无法找到文件"); //即使创建，仍有可能失败。。。。}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);