Trigger root script?

I need a php script to trigger another script to run as root on a machine. Currently, the scripts run as the www-data user, but that means I can't modify any files on the system that aren't owned by www-data or world writable. I somehow need to trigger a php script to run as the root user. I thought of using a cron to watch for some indicator but that would mean there could be a one minute delay. Any thoughts? Running php / linux and I have root access to the machine myself so i can set it up however I need to. Thanks. Jeff -- Jeffrey Sambells Director of Research and Development We-Create Inc. 519.897.2552 cell 519.745.7374 office 888.615.7374 toll free http://www.wecreate.com