title: php show all images in directory and sort by last modified
body: <p>I have the following php script display all images in a directory</p>
  
  <pre><code>&lt;?php
  $images = glob($dirname."*.jpg");
  foreach($images as $image) {
  echo '&lt;img src="'.$image.'" height ="400"/&gt;&lt;br /&gt;';
  }
  ?&gt;
  </code></pre>
  
  <p>I want to modify this so that when you visit the page it shows the last modified image on top. Could someone help me how I would go about doing that?</p>