如果网站启动，如何检查php / html？ [英] How to check from php/html if website is up?

问题描述

我希望我网站的用户检查是否有其他网站（http和/或https）。有些网站使用谷歌分析（如果我理解的话）。但我不明白他们是如何做到的。

I want the users of my website to check if any other website (http and/or https) is up. There are sites out there that use google analytics for that (if I understood it right). But I don't understand how they do it.

问题1）如何在我的网站上使用google-analytics检查是否有些其他网站上线了吗？

Question 1) How do I use google-analytics on my website to check if some other site is up?

问题2 ）我如何自己做？使用PHP或JavaScript？我想知道，如果google-analytics使用多个服务器位置检查网站是否在线，而不是我将使用自己的代码的单个位置，那么它是否可能更可靠。

Question 2) How do I do it by myself? Using php or javascript? I wonder if google-analytics might be more reliable in terms if they use multiple server locations to check whether the site is online compared to a single location that I would use with my own code.

推荐答案

您可以使用服务器端Curl并监控http响应标头，网站超时。

You can use server side Curl and monitor http response header, site timeouts.

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