Why does this code no longer show the value of my text boxes?
<p>I'm a beginner in PHP. 2 days ago I write few lines of code that was working, but yesterday, it wasn't anymore. The code was:</p>

<pre><code>&lt;body&gt;
    &lt;form method='post' action='test.php'&gt;
        name &lt;input type='text' id='txtName'/&gt;
        age &lt;input type='text' id='txtAge'/&gt;
        &lt;input type='submit'/&gt;
        &lt;hr/&gt;
        name &lt;?php echo $_POST['txtName']; ?&gt;
        age &lt;?php echo $_POST['txtAge']; ?&gt;
    &lt;/form&gt;
&lt;/body&gt;
</code></pre>

<p>What it does is only to show the value of text boxes, but it's not working. Why?</p>
