Problems deleting cookies, won't unset

Question

I\'ve tried searching the php manual and internet on how to delete cookies and I\'ve tried it the exact same way they all say:

setcookie(\"name\", \'\', 1);
         


        

Answer 1

I'm surprised no one has mentioned it (or maybe I missed it), but domain is important too! If you are on sub-domain.example.com, and the cookie is from .example.com, then you need to explicitly set the domain parameter, otherwise it will assume the current domain and it won't work.

setcookie('cookiename', FALSE, -1, '/', '.example.com');

Sub-domains value will not clear cookies from parent domain.