rewrite assistance

[daveyfx]

Antonio,

That did not work.  I'm still getting the same end result where
/preview.php?controllerName=channel&id=2 is rewritten as
/?controllerName=channel&id=2

Essentially I just want to check to see if preview.php is the requested
file, and if it is, redirect to / regardless of the query string
appended after preview.php

Thanks,
Dave

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,152792,152828#msg-152828