问题描述
谁能给我一个简单的使用 PHP 的彗星技术示例?
Can anyone give me a good and simple example of the comet technique using PHP?
我只需要一个使用持久 HTTP 连接或类似内容的示例.我不想使用轮询技术，因为我有类似的设置，不仅难以使用和管理它的大量资源.另外我使用的是 IIS7 而不是 Apache.
I just need an example that uses a persistent HTTP connection or something similar. I don't want to use a polling technique, because I have something like that set up and not only is it difficult to work with and manage its a big hog of resources. Also I am using IIS7 not Apache.
一个很好的例子会很有帮助，这样我就可以继续使用这种丑陋的投票技术.
A good example would be really helpful so I can move on from this ugly polling technique.
推荐答案
你应该使用轮询，或者使用一个专门为长请求和 COMET 设计的 web 服务器，有一个好的 JS 后端:
You should use polling, or use a web server which is specially conceived for long requests and COMET, with a good JS backend:
function listen() {
$.get("/mylongrequestfile", {}, function(data) {
$("#mydiv").html(data);
listen(); // then launch again
}));
};
记住COMET是等待数据，有数据返回退出"，所以JS后端要解析数据，重新启动询问服务器的过程.
Remember that COMET is "wait for data, if there's data return and exit", so JS backend will have to parse the data and re-launch the process of asking the server.
在这个例子中，如果出现服务器端问题或者只是与用户端断开连接，整个过程都会被破坏(只有请求成功才会调用该函数)
In this example, if there is a server side problem or just a disconnection from the user side, the entire process will be broken (the function is only called if the request is successful)
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