I'm creating a resource planner and I want to enable webcal subscribing for the resources. Right now I don't have a clue of how to develop a webcal subscribing system in PHP. Are there any documentions/library or code snippets you can share with me?
Well , there are quite a few i have known of, some good ones that can be of help are
http://code.google.com/p/sabredav/ http://www.davical.org/
I hope these can be of some help to you in getting started with webcal