Google ics File Calendar Publish Function or Class

I need a PHP 5.2 function or class which generates a *reliable* ics file containing multiple events that can be added into a users's Google Calendar using this format. Note: I need the function to generate an .ics file which this button points to where it says [login to view URL] The file will be pointed to using a Google "Add to Calendar" button like this which links to the ics file: <a href="[login to view URL]" target="_blank"><img src="//[login to view URL]" alt="0" border="0"></a> Ideally I want to pass the function an associative array containing a list of events like so: event[0][UID]="uniqueid123" event[0][Date]="2012-11-31" event[0]StartTime]="10:30pm"; event[0][EndTime]="11:30pm" event[0][Description]="text that may be up to 200 characters - please test" event[0][Location]="text that may be up to 200 characters" event[0][Summary]="text that may be up to 100 characters" event[0]Transparent]="TRANSPARENT" event[0][Category]="text that may be up to 100 characters" The ics file needs to do METHOD:PUBLISH OTHER INPUT VARIABLES: 1) Timezone: Ideally I need to pass a timezone in this format "America/Los_Angeles" and the times I pass will be treated as being in that timezone, and will show up when added at the correct time. (This is a contingency of payment). IDEAL: Ideally I would like the ics file to use "floating timezones" but I am not sure Google Calendar supports this. 2)I need to pass in a calendar name: This should be output like so X-WR-CALNAME:foobar However I'm open to other input methods *especially if you already have this code already developed* The ics file does not need to work with Outlook or Apple iCal (but that would be a bonus). The function or class should be self contained (no dependence on PEAR, Cake, Zend libraries). IMPORTANT: I would greatly prefer bidders who already have this routine. If you have this routine then respond "I have the code" in your subject line. Ideally you will link to a place on the web where I can see your code in action. I am also flexible if your class or function accepts differing input format to the above - in your reply please state how the routine is called. EXTRA CREDIT: The same routine outputs to Apple iCal and Outlook. OTHER CONSIDERATIONS: Needs to run on PHP 5.2 on a Windows server