PHP生成一个crontab

Question

I want to have a web interface to control when to call a PHP script. In this interface I want to be able to set certain times or ranges that a script will be called. This information will be stored in a DB. When I hit save I want to have it read all the scheduled times from the DB, then format it and write it to a crontab for a cron job. Is there a way to have PHP modify a crontab file?

Answer 1

I would go for creating a "cron_runner.php" script that runs every minute, reads the cron data and runs them accordingly. It feels like reinventing the wheel but at least you have no problems with the file permissions.