如何对整个根文件夹进行cookie访问

I want to make the cookie accessible for the entire root folder, how can I do it ??

<?php
$value="test";
setcookie("test",$value, time()+3600, '/', NULL, 0 );        
if($_COOKIE['test']=="test")
{
echo 'ok';
}
else
{
echo 'not ok';
}

It works only for the particular folder where the cookie is declared ,

  ie., localhost\proj\app\views\settings\client*

but I want to make accessible on the folder

  localhost\proj\app\views\*

How can I do this ?

Cookies can be restricted by allowing only sub domain access,to make cookie available for all set its domain to *.domain.com.

What worked for me is

setcookie(cookieName, cookieValue, time()+31557600, '/', '.domain.com');

When I tried with wildcard it didn't work, but as per official php.net documentation

http://php.net/manual/en/function.session-set-cookie-params.php

You just need to put a single slash as the path and .domainname.extension as the domain.