iOS全屏Web应用程序删除Cookie？ [英] iOS Full Screen Web App drops cookies?

问题描述

我经历过，当您开始/退出保存到信息中心（全屏模式）的网络应用时，iOS4会丢弃Cookie。

这是真的，解决方案

这不是一个错误，它是一个功能。

现在您的问题可能是：如何设置我的Cookie生命周期？假设你使用PHP，代码片段是：

  $ lifetime = 31536000; //一年
 setcookie（$ varName，$ varValue，time（）+ $ lifetime）; 
  

如果您使用PHP会话，则必须重写Cookie以添加大于0：

  setcookie（session_name（），session_id（），time（）+ $ lifetime）; 
  

通常，您不必为了更改默认生命周期而重写会话cookie，函数 session_set_cookie_params 应该让你这样做，但我发现并不总是这样。

I have experienced that iOS4 drops cookies when you start/exits a web app saved to the dashboard (full screen mode).

Is it true and is there a workaround?

解决方案

It's not a bug, it's a feature. Session cookies (i.e. cookies with a lifetime of 0) are dropped at the end of the browser session — which, in the case of a full screen web app, happens as soon as you leave the web app. If you want them to persist, just set your cookie lifetime to something larger than the default 0 (I use 1 year).

Now your question might be: how do I set my cookie lifetime? Assuming you're using PHP, the piece of code would be:

$lifetime = 31536000; // one year 
setcookie($varName,$varValue,time()+$lifetime); 

If you're using PHP sessions, you will have to rewrite the cookie to add a lifetime greater than 0:

setcookie(session_name(),session_id(),time()+$lifetime);

Normally, you shouldn't have to rewrite the session cookie in order to change the default lifetime, as the function session_set_cookie_params should let you do just that, but I found it's not always the case.

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