private function parseExtensionFilter($extensions = "") { $filter_exts = ""; if (strlen($extensions) >= 1 && $extensions != ";") { $filter_exts = str_replace(array(' ', '.'), '', $extensions); $filter_exts = str_replace(",", ";", $filter_exts); $filter_exts = DUP_Util::StringAppend($extensions, ";"); } return $filter_exts; }