file1
file2
file3

<p><strong>Output</strong></p>
<!--?php
//path to directory to scan
$directory = "images/download/output/";
$files = glob($directory . "*.pdf");
array_multisort(array_map( 'filemtime', $files ),SORT_NUMERIC,SORT_DESC,$files);

//print each file name
foreach($files as $f) {
  $path_parts = pathinfo($f);
  echo '<p><a href="'.$f.'">'.$path_parts['filename'].'</a></p>';
}
?-->
<p> </p>