Php file run in background...

[eluser]zdknudsen[/eluser]
Why does it have to be done every 10 minutes? If noone requests it for 30 minutes you've updated twice without reason. You could just check if there has passed more than 10 minutes since last request and then do the update.

Otherwise, I don't think what you want is possible on shared hosting. Unless you make your own computer visit the site every 10 minutes