Executing a script once per second?

Question

PHP

Hello, what is the best way to solve this problem?
There is a task to do something like this: https://soojoo.ru/lots/info?id=2504
There is a timer, for example 20 seconds, at the moment when there are 5 seconds left, you need to perform actions, how can this be done?
through cron , the minimum interval is 2 minutes

Answer 1

Auctions are real-time applications. And delays there are highly undesirable, if not completely unacceptable. Use more suitable technologies for this. For example, websockets, Comet...

Answer 2

cron, in the cron loop, in the sleep(1) loop - 1 second, and the condition if the loop counter = 20 then perform some action