Function mod_getDirname

Get dirname of a module according to current path

Package: Frameworks\art
Copyright: (c) 2000-2016 XOOPS Project (www.xoops.org)
License: GPL 2 (http://www.gnu.org/licenses/gpl-2.0.html)
Author: Taiwen Jiang phppp@users.sourceforge.net
Located at rameworks/art/functions.ini.php

Parameters summary
`string`	`$current_path = null`	path to where the function is called

Return value summary
`string`	$dirname