删除先前的Cookie后，设置Cookie无法正常工作

Question

I want to set a cookie if Username is entered and also want the previous cookie to get deleted. I am able to unset the previous cookie but new cookie is not working for me. It showing blank.

   if(!empty($User_Name))
   {
        unset($_COOKIE['username']);
        setcookie('username', $User_Name, time()+31536000);

        echo $_COOKIE['username']; // blank

   }

Any help would be nice.

Answer 1

In my opinion there is no need to unset the cookie. Because, when you set the cookie it will override the existing cookie ( if it exists ) or create a new one ( if it doesn't exist )

Answer 2

From the PHP Docs ..

Cookies will not become visible until the next loading of a page that the cookie should be visible for. To test if a cookie was successfully set, check for the cookie on a next loading page before the cookie expires.

Answer 3

Found that if the path is empty it applies only to the current path, if you specify "/" applies to all paths.

so / did the trick.

setcookie('username', $User_Name, time() + (86400 * 7), "/");