如何删除真实的cookie？ [英] How to delete a cookie for real?

问题描述

我设法在IE中严重破坏我的cookie字符串，它现在看起来像这样：

I've managed to mangle my cookie string in IE so badly, it now looks like this:

"; __atuvc=4%7C7; PHPSESSID=e4db10eb5d4409ba3203a7c1d533fafd; PHPSESSID=75a04bdcf604dd607d383da774c0f72a; __utmc=51433896; __utma=51433896.100703801.1392175783.1392175783.1392178863.2; __utmb=51433896.5.10.1392178863; __utmz=51433896.1392175783.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none); __atuvc=3%7C7"

这是键入 document.cookie 进入IE11开发者栏。

That's the output of typing document.cookie into the IE11 developer bar.

您会注意到 PHPSESSID 是在那里两次。我想杀了它。

You will notice PHPSESSID is in there twice. I want to kill it.

我试过在JavaScript中运行它：

I've tried running this in JavaScript:

document.cookie = 'PHPSESSID=; expires=Thu, 01 Jan 1970 00:00:01 GMT;';

并在PHP中运行：

session_start();
setcookie('PHPSESSID', '', time()-3600); 
setcookie('PHPSESSID', '', time()-3600, '/'); 
session_unset();
session_destroy();

但似乎没有什么可以摆脱cookie。

But nothing seems to get rid of the cookie.

我知道我可以通过浏览器手动删除cookie，但是现在有很多用户都在炒相，我需要一种方法自动完成。

I'm aware I can delete the cookies manually through the browser, but a whole bunch of users have fried sessions right now, and I need a way to do it automatically.

推荐答案

删除cookie时，必须完全像设置时一样指定cookie参数。您可以使用 session_get_cookie_params 函数获取当前会话cookie的参数

When you delete a cookie you must specify cookie params exactly like when it were set. You can use session_get_cookie_params function to get current session cookie's params

$params = session_get_cookie_params();
setcookie(
    session_name(), '', time() - 86400, 
    $params['path'], 
    $params['domain'],
    $params['secure'],
    $params['httponly']
);

session_destroy();

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