How am I supposed to make a timer_

Well, first of all I want to tell you what I am trying to make.​Basically I am making a monthly subscription monthly paying but I don't know who to check that the user paid again.I thought in making a scheduler for each user and after the scheduler is done, check the database or something. The end date would be saved to db in case a shutdown, so I can retrieve the information again to start the scheduler again.​I hope any of you know the correct way to make this.Thanks.

Submitted June 30, 2019 at 04:16PM by ricardorm0