Description:
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Cookie is created with an 8 hour expiry time, supplying only the name, value and expire parameters.

Attempt to remove cookie using setcookie with the same name, a null value and an expire parameter of -1 hours.

Cookie not removed.

Supplying the (supposedly optional) path parameter set to "/" successfully removes the cookie.



Reproduce code:
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setcookie("user", $_SESSION[user], mktime()+(60*60*8));  


...
...

setcookie("user",NULL,mktime()-3600);       

Expected result:
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Cookie should not exist.

Actual result:
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Cookie does exist. Add a path parameter of "/" to the removal call and the cookie is removed.