Change PHP include ("link.php") by click buttons
<p>how to change PHP include ("link.html") by click buttons. </p>

<pre><code>&lt;?php include('link1.html')?&gt;
BUTTON 1 change &lt;?php include('link1.html')?&gt; to &lt;?php include('link2.html')?&gt;
BUTTON 2 change &lt;?php include('link1.html')?&gt; to &lt;?php include('link3.html')?&gt;
BUTTON 3 change &lt;?php include('link1.html')?&gt; to &lt;?php include('link4.html')?&gt;
</code></pre>

<p>how to do this without refreshing page. using ajax?</p>