Stop script execution?

Question

PHP

The script (php) runs every 5 minutes via cron, but cron can run in the range from 290 seconds to 310, that is, with an error. It is necessary to exclude the re-run of the script, one of the options is to stop the running script and start it again. What do you advise?

Answer 1

Use the standard Linux utility - flock ( example ), the launch of a new process will not occur until the execution of the previous one stops.

Answer 2

If I understand you correctly, then you need to store its state and see if it is running now. If so, then stop working, otherwise execute and update the current state.