cookie question

[dragosul]

i got to remake some script after a guy and i'm not sure of some things like:


setcookie("affilid", $affilid, time()+999*86400, "/");
setcookie("affilid", $affilid, time()+999*86400, "/", "www.ws.com");
setcookie("affilid", $affilid, time()+999*86400, "/", "ws.com");
setcookie("affilid", $affilid, time()+999*86400, "/", ".ws.com");


why did he use so many setcookie isn't the same if i put:

setcookie("affilid", $affilid, time()+999*86400, "/", "ws.com");
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and another one if the user enters again the web page with NEW $affilid is this cookie rewriten ? or not

[YUPAPA]

I am not sure, but I think they are all the same.
I can't see the setcookie subroutine, plus I do not know what he is doing, so I can't tell.