setcookie() problems

[Anon]

i have the following code:

setcookie("pud_visit", "visited", time()+604800, "/");

but when i try to use it i get the following error:

Warning: Cannot add header information - headers already sent

any ideas why?

thank you

[Anon]

yeah gilly , the cookie needs to be sent in the header that is before sending anything else.
You are sending data using echo or print or outputting plain html , then calling the setcookie function. It will definitely not work. The first output to the browser needs to be the setcookie function.