How to launch a php script 12 hours after each user triggered event
<p>Any of the users can trigger an event, as many times they wish. Each time this event is triggered, a row in a mysql table is created with the timestamp, their userid and other useful information. What I need to do is launch a script which runs exactly 12 hours after the event is triggered i.e. for each row in the table.</p>

<p>How can I achieve this in an automated and efficient fashion?</p>
