错误 - 网页已过期PHP？ [英] Error - Web Page Has Expired in PHP?

问题描述

我有六页在我的PHP项目登记表。

I have six pages for a registration form in my PHP project.

在，如果我preSS从浏览器栏的后退按钮的页面之间我得到的错误：

In between any of the page if I press the back button from the explorer bar I get the error:

网页已过期

我使用 $ _ POST 来提交数据。我不明白，为什么出现这种情况？

I am using $_POST to submit the data. I can't understand why this occurs?

推荐答案

这消息有与IE浏览器处理来自POST数据生成的页面的方式做。

That message has to do with the way IE handles pages generated from POST data.

在一般情况下，为了避免这个问题必须确保在后面历史，用户将永远无法降落被从POST请求而生成的网页上。由于 jspcal 建议，你的帖子的反应应该是一个重定向到一个GET请求另一页。这也被认为是最佳实践，因为它减少提交表单两次的风险。

In general, to avoid this problem you have to make sure that in the back history, the user will never be able to land on a page that was generated from a POST request. As jspcal suggested, your POST response should be a redirect to another page requested by a GET. This is also considered best-practice since it reduces the risk of submitting a form twice.

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