Do domain cookies work from a subdomain?

Question

PHP

A visitor comes, I immediately set a cookie for him, then there is a redirect to the mobile version if he came from a mobile phone. But in fact, I put the cookie on the regular version of the site yet. Would it be possible to see it in $_COOKIES from m.site.com ?

Answer 1

yes it works like this:

setcookie('cookies-name', 'cookies-value', time()+3600 * 24 * 365, "/", ".mysite.com");