How to run a php script every minute?

Question

PHP

Yes, I know what cron is, but I need the user to launch a script when they click a button on the site, which will run every minute.
Is it possible somehow to add/remove commands to cron via php?
Or tell me other options.

Answer 1

It is better to let the necessary info be saved when the user presses the button in the database or somewhere else, and the only script in cron pulls the info and performs the necessary actions.

Answer 2

Is it possible somehow to add/remove commands to cron via php?

www.php.su/functions/?exec

Answer 3

It's called "agent". User activity triggers server scripts.
If there are users on the site every minute, that's good. You hang an event for calling your script on the transition through the site, which checks whether it's time to start the script or not.