title: Recurring event in PHP
body: <p>Hi there I'd like to make a recurring event based on calendar basis. The thing I want to ask is this: How to trigger the event? If the client doesn't login or open the webapp to trigger the event in the constructor, how do I make the code to run anyways. </p>
  
  <p>I know cron jobs maybe the solution, but is there any other solution?(I want to avoid cron jobs).</p>