A DokuWiki directory lister plugin

I wrote this simple DokuWiki plugin that lists the directories contained in a hardwired directory (it works like this Mediawiki extension): its output is like the following XHTML list:

<ul>
<li>http://www.foo.org/aaa/</li>
<li>http://www.foo.org/aab/</li>
<li>...</li>
<li>http://www.foo.org/zzz/</li>
</ul>

The directories returned are sorted: change the values of lhd_path and lhd_url before using the plugin. A DokuWiki plugin is mainly a PHP class that looks definitely cleaner than a Mediawiki extension.