title: Integrate my website with google calendar
body: <p>Im developing a website in PHP. The users of this site are allowed to book appointments from the calendar that i have provided. When a user makes a booking it should be added to my google calendar. </p>
  
  <p>What kind of authentication mechanism would i need for this type of scenario? Which one from the following?
  1. Web applications
  2. Service accounts
  3. Installed applications</p>
  
  <p>NB: I dont want to access my site user's google calendar. I just want their booking be shown in my google calendar. And, if possible, please post a source where i can get started on the coding. I searched but most tutorials on this topic are based on .NET.</p>
  
  <p>Thanks.</p>