Cookies set by domain/bath in PHP, correct ?

If I set a cookie for affiliate credits[after a webform submission]:
http://www.paphoscarhire.com/index.php?aff=polis
then this is valid
http://www.paphoscarhire.com/polis.htm?aff=polis
or needed to add cookie code and to this webpage ?
Cookies set by domain/bath in PHP, correct ?

i've got no idea what you're looking for.
can you be a bit clearer in your explanation/question?

I setup a PHP code for a cookie at webpage:
http://www.paphoscarhire.com/index.php?aff=polis
well this cookie is to count affiliate bookings for paphoscarhire.com company
well this big url with extension ?aff=polis may be written to another webpage url in the same folder[root] like:
http://www.paphoscarhire.com/polis.htm?aff=polis
and cookie still operates gives credit commission to affiliates [cookie php code is on the earlier webpage] ?
Cookies set by domain/bath in PHP, correct ?