Masahiro said:All I can think of is using a cronjob, unless you want to run a script yourself hourly or your site recives more than 1 hit an hour, if so, then you could do it by checking the time of the last run in some kind of storage (textfile? db), and the current time. If more than an hour has passed, do the operation
(sorry not that good at php coding myself... so I can only think of how to do it in English)

