title: echoing a functional in php
body: <p>I'm trying to echo a functional button in php. </p>
  
  <pre><code>echo "&lt;button type='button' onclick="alert('Hello world!')" &gt;Buy&lt;/button&gt;";
  </code></pre>
  
  <p>All it is supposed to do is the user presses it and displays "hello world".</p>