如何使用Zend压缩多个文件（2）压缩？

Files are getting zipped..but once i extracting the zip file, the result is single file..not a multiple file.How to zip multiple file using zend filter(Zip)..?

Here is my code..

//zip part
        $filter = new Compress(array(
            'adapter' => 'Zip',
            'options' => array(
                'archive' => TEMP_UPLOAD_PATH . DIRECTORY_SEPARATOR. "download" . DIRECTORY_SEPARATOR . $result['downloadResult']->r_download_id.'.zip'
            )
        ));
        $file_list = scandir(TEMP_UPLOAD_PATH . DIRECTORY_SEPARATOR. "download". DIRECTORY_SEPARATOR . $result['downloadResult']->r_download_id);
        if(count($file_list) >2){
            foreach ($file_list as $file) {
              if (in_array($file, array(".",".."))) continue;
              $filter->filter(TEMP_UPLOAD_PATH . DIRECTORY_SEPARATOR. "download". DIRECTORY_SEPARATOR . $result['downloadResult']->r_download_id . DIRECTORY_SEPARATOR . $file);
            }
        }
        //zip end

Every $filter->filter(…) invocation creates a new archive that contains only one file and the existing archive with the previous file gets overwritten. Solution:

$filter = new Compress([
  'adapter' => 'Zip',
  'options' => [
    'archive' => TEMP_UPLOAD_PATH . DIRECTORY_SEPARATOR . 'download'
      . DIRECTORY_SEPARATOR . $result['downloadResult']->r_download_id . '.zip'
  ]
]);

// assuming you _can_ create archive from the whole directory
$filter->filter(TEMP_UPLOAD_PATH . DIRECTORY_SEPARATOR . 'download'
  . DIRECTORY_SEPARATOR . $result['downloadResult']->r_download_id);