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POjQuery update php array into javascript
 

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  1. POjQuery update php array into javascript
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    <p>Simplified version of my problem:</p> <p>Here is javascript example called <strong>example.html</strong> writes the content of a javascript array. </p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;script type="text/JavaScript"&gt; // javascript array called data data=[ [1,2],[3,4],[5,6] ] function WriteText(){ for(var i=0;i&lt;3;i++) document.write(data[i],"&lt;br&gt; ") } WriteText(); &lt;/script&gt; &lt;/head&gt; &lt;/html&gt; </code></pre> <p>Instead of array the values are written columns <strong>file.txt</strong> located in the same server directory where the <strong>example.html</strong> is. <strong>file.txt</strong> looks like that</p> <pre><code> 1 2 3 4 5 6 </code></pre> <p>I would like to accomplish the same functionality as the example above by reading this file with php and pass it to the javascript. <strong>file.txt</strong> is a log file where new values are being appended every few seconds So when new values are added I want to see the changes updated to screen. Here is <strong>getfile.php</strong> function that reads the file.</p> <pre><code>&lt;?php $values = array(); foreach(file("file.txt") as $line =&gt; $content) { $values[$line] = explode(' ',$content); } echo json_encode($values) ?&gt; </code></pre> <p>And here is the code that does this.</p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;script type="text/javascript" src="jquery-1.5.2.js"&gt;&lt;/script&gt; &lt;script type="text/javascript"&gt; function WriteText(InputData){ for(var i=0;i&lt;InputData.length;i++) document.write(InputData[i],"&lt;br&gt; ") } //WriteText(data); setInterval($.get("getfile.php", { "func": "doSomething" },WriteText , "json"),1000); &lt;/script&gt; &lt;/head&gt; &lt;/html&gt; </code></pre> <p>I got this idea from <a href="http://api.jquery.com/jQuery.get/" rel="nofollow">http://api.jquery.com/jQuery.get/</a></p> <p>This code displays the <strong>file.txt</strong>. However when I manually append new values to the <strong>file.txt</strong> there is no update in the browser. If I refresh the page manually the new values are shown as well. So what am I doing wrong?? Is it the php script or probably I am not using the <code>setInterval()</code> properly. Thank you. </p>
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