检查是否启用了cookie [英] Check if cookies are enabled

问题描述

我正在处理一个需要JavaScript和会话的页面.我已经有代码来警告用户是否禁用了javascript.现在，我想处理禁用cookie的情况，因为会话ID存储在cookie中.

I am working on a page that requires javascript and sessions. I already have code to warn the user if javascript is disabled. Now, I want to handle the case where cookies are disabled, as the session id is stored in cookies.

我想到的只是几个主意:

I have thought of just a couple ideas:

1. 将会话ID嵌入链接和表单中
2. 警告用户必须禁用cookie(如果需要禁用cookie，这将需要帮助，以检测cookie是否被禁用)

解决此问题的最佳方法是什么?谢谢

What is the best way to approach this? Thanks

编辑

基于链接的文章，我想出了自己的方法，并认为我会分享，其他人也许可以使用它，也许我会得到一些批评. (假设您的PHP会话存储在名为PHPSESSID的cookie中)

Based on the articles linked, I came up with my own approach and thought I would share, somebody else might be able to use it, maybe I will get a few critiques. (Assumes your PHP session stores in a cookie named PHPSESSID)

<div id="form" style="display:none">Content goes here</div>
<noscript>Sorry, but Javascript is required</noscript>
<script type="text/javascript"><!--
if(document.cookie.indexOf('PHPSESSID')!=-1)
   document.getElementById('form').style.display='';
else
   document.write('<p>Sorry, but cookies must be enabled</p>');
--></script>

推荐答案

JavaScript

在JavaScript中，您可以对 cookieEnabled 属性进行简单测试.主要浏览器.如果您使用的是较旧的浏览器，则可以设置Cookie并检查其是否存在. (从 Modernizer 借用):

JavaScript

In JavaScript you simple test for the cookieEnabled property, which is supported in all major browsers. If you deal with an older browser, you can set a cookie and check if it exists. (borrowed from Modernizer):

if (navigator.cookieEnabled) return true;

// set and read cookie
document.cookie = "cookietest=1";
var ret = document.cookie.indexOf("cookietest=") != -1;

// delete cookie
document.cookie = "cookietest=1; expires=Thu, 01-Jan-1970 00:00:01 GMT";

return ret;

• Modernizer cookie检查提交
• 检查是否已启用Cookie
• Modernizer cookie check commit
• Checking if Cookies are Enabled

在PHP中，它相当复杂"，因为您必须刷新页面或重定向到另一个脚本.在这里，我将使用两个脚本:

In PHP it is rather "complicated" since you have to refresh the page or redirect to another script. Here I will use two scripts:

somescript.php

<?php
session_start();
setcookie('foo', 'bar', time()+3600);
header("location: check.php");

check.php

<?php echo (isset($_COOKIE['foo']) && $_COOKIE['foo']=='bar') ? 'enabled' : 'disabled';

• 检测是否Cookie已通过PHP启用
• PHP和Cookies，很好的搭配！
• Detecting if the cookies are enabled with PHP
• PHP and Cookies, A Good Mix!

这篇关于检查是否启用了cookie的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！