how to use XMLTV php API?

Hi I would like to know how I can use this api: https://github.com/bcmoney/OpenRecommender/blob/master/lib/services/scraper/video/tv/xmltv/xmltv.class.php for parsing xmltv.xml tv listing like this one: http://epg.dxing.si/download/new.xml

Thanks for Anwsering and Best Regards