Need to write a browser redirect script

We want a server side PHP script that redirects a browser to multiple URLs one by one from a list of URLs in a text file after specific intervals. We would upload a text file with a list of URLs to the root directory, which the script can read and open each consecutive URL at specific interval. These intervals could be different for each URL... e.g., When a user opens our home page ([login to view URL]) (or any specified page, [login to view URL]), it open with the 1st URL in the list, then the next URL opens after 5 seconds, and the next URL opens after 8 seconds, and the next after 4 seconds, etc... these interval to be configurable by us for each URL in the list. Very much like the META-REFRESH tag but with multiple URLs and with configurable refresh intervals for each step. Please contact if you get what this means... :)