Cookie expire doesn't work on my webhost

Hey,
I have a login script which saves a user token in a session variable and in a cookie. At each page request it checks if the token exists in a database, if it does, then the information of the user with that token is saved in the array $login_data ( for example $login_data ).

I use the following logout function:
PHP Code:
function logout(){
// session_start() has allready been called.
global $login_data;

$expire = mktime(12,0,0,1, 1, 1970); 
 
// remove login data 
unset( $login_data ); 

// make the cookies expire 
setCookie('ck_admin_token', '', $expire, '/' ); 

// unet and destroy session variables. 
session_unset(); 
session_destroy(); 

}

When i run the logout function on my home machine it works perfectly, but when i upload the website to my paid host it doesn’t work anymore. I think it is the cookie that won’t expire.

Can anyone help me out?
Thanks in advance.


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