In PHP you would define cookie like this:
setcookie( name, value, expire, path, domain, secure, httponly);
The secure flag purpose is to prevent clear text cookies over HTTP. By setting the secure flag, the browser will prevent the transmission of a cookie over an unencrypted channel.
The other parameters like domain and path are constraints, that precisely set where cookie should work.
For instance setting cookie domain to
www.example.com will mean only the exact domain
www.example.com will be matched, while
.example.com will also match any subdomain (forum.example.com, blog.example.com).
The path argument default value of
/ means every request will get the cookie, while
/forum/ limits the cookie to just
The expire flag is usually set to some period like 1 or 2 weeks meaning that the cookie will last for 1 or 2 weeks.
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