如何更新PHP中的cookie？
问题描述：
如果我用相同的cookie名称调用setcookie（）两次，我会得到两个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？ p>
How do you update a existing cookie?
答
您不能更新Cookie本身，但您可以覆盖它。
否则，这是您要查找的内容： 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
它可以工作。请务必从该网页中阅读常见错误。
It works. Be sure to read "Common Pitfalls" from that page.
您可以使用超级全局 $ _ COOKIE ['cookie_name'] 以及读/写cookie。
You can use the super global $_COOKIE['cookie_name'] as well to read/write cookies.