I need to integrate Google Calendar into a custom built php task reminder app.
The app currently allows the user to create a reminder and have it delivered via sms, email, phone etc.
I would like to add an additional feature that allows users to automatically get reminded of events in their Google Calendar. The user would simply tag an event in Google Cal with a "keyword" and all events with that keyword would have reminders sent out at pre-determined time (set by the user in the apps settings panel).
You will need to be able to work with the Google Calendar API
As this is an already functioning app you will need to integrate these features into the existing design and make use of the existing frameworks.