undefined PHP_SELF and PATH_INFO

[franklium]

I am writing some php script and testing it on my IIS server
but every time when i call the variables PHP_SELF or PATH_INFO
a error come up saying that the variable is not defined
i have no idea y this happens
can someone help me out

[common_ground]

have you tried $HTTP_SERVER_VARS['PHP_SELF'];

[Psyche]

Or also:

 $_SERVER['PHP_SELF'];