PHP-如何确定脚本将在哪个域中查找C​​ookie？

Question

I'm trying to fix a really elusive bug where I lose my session upon redirect.

In my local setup, there is no problem; it only manifests itself on the live site. I discovered that my local version was creating two identical cookies: one for .mydomain.com and one for www.mydomain.com . However, the live site creates only one cookie for .mydomain.com .

It seems as though my script is looking for the www.mydomain.com cookie, which is why there's no apparent problem on the local server.

How do I determine to which domain a given script will look for its cookies? (or if this sounds like a different problem, please let me know)

Answer 1

使用setcookie(key, value, expire_time, '/')这将为您站点的文档根目录添加cookie，www.domain.com或domain.com都可以正常工作。