Customize Google Calendar RSS Feed

Customize a google calendar RSS feed to create a separate RSS Feed that list only the five most recent events in the calendar using PHP. Each title of the event should link to web description that is generated from the RSS Calendar Event. The feed to be customized is: <[login to view URL]> Also, see Google API for calendar: [login to view URL] The feed should look like the Upcoming Events section on the website www.gokihei.org.