title: Creating multiple cron jobs with PHP
body: <p>I'm in need of a way to create dynamic, one-off cron jobs to execute tasks at different times. Ideally, I would like to achieve this using PHP, so that when a user completes a certain action, the cron job is created and scheduled for a time that is calculated based on the time that the user completes said action. At any one time, there could be multiple cron jobs scheduled at once for different times. These cron jobs also need to be deleted upon completion.</p>
  
  <p>I have tried searching around for something appropriate, however haven't encountered anything that works as I need. If anybody could point me in the right direction, that would be greatly appreciated.</p>
  
  <p>Cheers</p>