使用javascript定期调用php脚本 [英] Calling a php script at regular intervals with javascript

问题描述

我正在使用php和javascript定期在页面的一部分上生成输出。我是js的新手，所以请原谅任何迟钝的问题。

I'm working on generating output on a section of a page at regular intervals with php and javascript. I'm brand new to js, so please forgive any obtuse questions.

原始的PHP代码是;

The original php code is;

<?php

$data = file_get_contents("http://" . $phoneControlUsername .":" . $phoneControlPassword . "@" . $ip . "/CGI/Screenshot");
$filename = "tempFiles/phoneScreenshot$dev";
file_put_contents($filename, $data);
echo "<img src=" . $filename . " style='width:100%;'>"

?>

这曾经是我主页的一部分，但我把它移到了自己的文件screenGen .PHP。我的主页可以完全没问题地调用它;

This used to be part of my main page, but I moved it over to its own file called screenGen.php. My main page can call on it with no problem at all;

require（'screenGen.php'）;

我需要每五秒生成一次这个特殊代码。因此，在阅读javascript和php如何一起使用时，我想出了;

I need this particular code to be generated every five seconds. So, in reading how javascript and php can be used together, I came up with;

<script>

window.setInterval(function() 
        {
        screenGen = '<?php require('screenGen.php'); ?>';
        document.write(screenGen);
        }, 5000);

</script>

当然，这不起作用。我无法找到关于如何做这样的事情的正确方向，因为对于这个主题是新手，我不知道如何寻找它。如何定期生成screenGen.php？

Of course, this does not work. I can't find the right directions on how to do something like this because, being new to the subject, I don't know how to look for it. How can I generate screenGen.php at regular intervals?

推荐答案

我找到的答案比发布的答案简单得多。

I found an answer that's simpler than the ones posted.

1）在服务器上安装jquery。如果您使用的是Debian，可以使用安装sudo apt-get install libjs-jquery

1) Install jquery on your server. If you're using Debian, you can install with sudo apt-get install libjs-jquery

2）In你的PHP;

2) In your PHP;

<div id="auto"></div>

<script language="javascript" type="text/javascript" src="/javascript/jquery/jquery.js"></script>
<script type="text/javascript">
$(document).ready( function()
        {
        $('#auto').load('screenGen.php');
        refresh();
        });

function refresh()
        {
        setTimeout( function()
                {
                $('#auto').load('screenGen.php');
                refresh();
                }, 5000);
        }
</script>

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