add_filter(’ngg_dlgallery_zip_filename‘, function($zipname, $gallery) { // do something to $zipname, and then return it… return $zipname; }, 10, 2);
add_filter(’ngg_dlgallery_zip_filename‘, function($zipname, $gallery) { // do something to $zipname, and then return it… return $zipname; }, 10, 2);