Execute mysql query periodically using script

Question

I'm new to php. I want to execute mysql query periodically (say every 5 seconds) using script. Query can be anything (as for now such as getting all data one by one from databse or inserting data to database). How can I do this? I've been through some examples but as I'm new to php, I'm not getting.

Answer 1

you can do this using event or cron job created on server

Event

using event

DELIMITER $$

ALTER EVENT `ev_myevent` ON SCHEDULE EVERY 5 SECOND STARTS '2013-10-23 11:00:00' ON COMPLETION PRESERVE ENABLE DO BEGIN
// your code here
END$$

DELIMITER ;

using cronjob

check this link
1 Cronjob execute PHP script

2 Managing Cron Jobs with PHP

Answer 2

If you want to update content in your site every 5 seconds and update database then you do it by ajax calling. Other then if you want to update database periodically then use cron.