Ok...Uhh I don't think it will help much, but
Delete cookie:
setcookie("loggedin", '', time()+24*3600*99999999, "/", "chaseschwalbach.com");
Set cookie:
setcookie("loggedin", $user, time()+24*3600*99999999, "/", "chaseschwalbach.com"); }
Both are set before anything is sent to the browser.