你如何在 PHP 中更新 cookie?
如果我用相同的 cookie 名称调用 setcookie() 两次，我会创建两个 cookie.
If I call setcookie() two times with the same cookie name, I get two cookies created.
如何更新现有的 cookie?
How do you update an existing cookie?
推荐答案
您不能更新 cookie 本身，但是您可以覆盖它.否则，这就是您要查找的内容:http://php.net/manual/en/function.setcookie.php
You can't update a cookie per se, you can however overwrite it. Otherwise, this is what you are looking for: http://php.net/manual/en/function.setcookie.php
它有效.请务必阅读常见陷阱"；来自那个页面.
It works. Be sure to read "Common Pitfalls" from that page.
您也可以使用超级全局的 $_COOKIE['cookie_name'] 来读取 cookie.
You can use the super global $_COOKIE['cookie_name'] as well to read cookies.
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