read diles in directory

readdir.php

<?php 

if ($handle = opendir('directory')) {

  /* This is the correct way to loop over the directory. */
  while (false !== ($entry = readdir($handle))) {
    if($entry == '..' || $entry == '.'){
      continue;
    }
    $lists[] =  $entry;
  }

  foreach($lists as $listKey => $listName){

    echo basename($listName, '.pdf')."\n";

  
  }

  closedir($handle);
}