title: how to set cron through php script?
body: <p>i have 10 users. and i want to set a cron for that 10 users. Now when a perticular user logged in he can set the corn time from his panel and cron will run at that time .Also when new user added a new cron will be set for that user with default time according to application.</p>
  
  <p>how can i achieve this?</p>