The default setting of 'REQUEST_URI' works for most servers . * If your links do not seem to work , try one of the other delicious flavors : * * 'REQUEST_URI' : Uses $_SERVER [ 'REQUEST_URI' ] * 'QUERY_STRING' : Uses $_SERVER [ 'QUERY_STRING' ] * 'PATH_INFO' : Uses $_SERVER [ 'PATH_INFO' ] * * WARNING : If you set this to 'PATH_INFO' , URIs will always be URL - decoded !