php - Problems deleting cookies, won't unset -

How have I removed cookies but have tried to search the php manual and the internet and I tried it the same way As they all say:

  Setuqi ("name", "1,");  

or

  setkey ("name", "time") - 3600);  

But when I check cookies in the Cookies dialog in Firefox, even then with the same value I set this cookie by using the following line:

  setkey ("name", $ value, time (+ 259200, $ path);  

I got a question on StaxHourFlow:, but none of the answers got solved.

:

The parameters should be removed with, as they are set. If the value argument is an empty string, or FALSE , and all other logic sets match the previous call on the cookie, the cookie with the specified name will be removed from the remote client. It is obtained internally by setting the 'deleted' and the term of expiration for a year in advance.

If the cookie was specified in the subdirectory, you may not be able to remove it from the parent or children's directory (or both).

I am not sure how permission works,