Chops already has a parser built into DKP System that allows you to upload the .lua file and have it populate the calendar on your website.
Typically as a user we don't have access to any of the direct PHP side of the system.
Take a look at
Admin > Schedule > Group Calendar Importer--
Six Demon BagJack Burton: Hey, what more can a guy ask for?
Egg Shen: Oh, a six-demon bag!
Jack Burton: Terrific, a six-demon bag. Sensational. What's in it, Egg?
Egg Shen: Wind, fire, all that kind of thing!