在某些服务器上，last-modified http 标头字段指向 future，为什么？

发布于 2024-12-14 06:16:48 字数 876 浏览 5 评论 0原文

例如，考虑来自 php.net 的 url，就这样吧： http://pl2 .php.net/manual/en/function.time.php

我获取此信息时的格林威治标准时间为：上午 7:32，我的当地时间为欧洲冬季时间 (CET) 上午 8:32

，标题为：

HTTP/1.1 200 OK
Date: Tue, 08 Nov 2011 07:23:40 GMT
Server: Apache/2.2.21 (FreeBSD) mod_ssl/2.2.21 OpenSSL/0.9.8k DAV/2 PHP/5.3.8 with Suhosin-Patch
X-Powered-By: PHP/5.3.8
Content-language: en
Set-Cookie: LAST_LANG=en; expires=Wed, 07-Nov-2012 07:23:40 GMT; path=/; domain=.php.net
Last-Modified: Tue, 08 Nov 2011 10:03:04 GMT
Vary: Cookie
Link: <http://php.net/time>; rel=shorturl
Transfer-Encoding: chunked
Content-Type: text/html;charset=utf-8

但是 Last-Modified 字段指向未来大约 2.5 小时，为什么？

还有一个 date 字段，它对于文件修改时间似乎是正确的，但是最后修改的时间是什么？

这是使用 php 5.3.8 和 libcurl 下载的。

原文

for example consider an url from php.net, let's be it: http://pl2.php.net/manual/en/function.time.php

gmt time when I fetched this was : 7:32 AM and my local time was 8:32 AM winter european time (CET)

and the header is :

HTTP/1.1 200 OK
Date: Tue, 08 Nov 2011 07:23:40 GMT
Server: Apache/2.2.21 (FreeBSD) mod_ssl/2.2.21 OpenSSL/0.9.8k DAV/2 PHP/5.3.8 with Suhosin-Patch
X-Powered-By: PHP/5.3.8
Content-language: en
Set-Cookie: LAST_LANG=en; expires=Wed, 07-Nov-2012 07:23:40 GMT; path=/; domain=.php.net
Last-Modified: Tue, 08 Nov 2011 10:03:04 GMT
Vary: Cookie
Link: <http://php.net/time>; rel=shorturl
Transfer-Encoding: chunked
Content-Type: text/html;charset=utf-8

but Last-Modified field points about 2.5 hours in the future, why ?

and there also is date field which seems to be correct for file modification time, but what is the last-modified then for ?

This was downloaded with php 5.3.8 with libcurl.

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