How can I use PHP to dynamically publish an ical file to be read by Google Calendar?

Question

Any Google search on PHP ical just brings up phpicalendar and how to parse or read IN ical files. I just want to write a PHP file that pulls events from my database and writ

Answer 1

Maybe a little late, but here's a link to the actual specification. http://tools.ietf.org/html/rfc55451