List Drupal files directory

This is how you can list files in Drupal 6 files directory

<?php

define('TOOLS_CSV_FOLDER', "/tools/csv/");

function tools_get_users_csv() {
  global $user;
 
  $dest = file_directory_path();
  $base_dir = $dest.TOOLS_CSV_FOLDER;

  $csv_files = file_scan_directory("sites/default/files/tools/csv", $user->name.'.*\.csv$'); //

  $output = array();
  foreach ($csv_files as $file => $csv_file) {
    ?>
    <pre>
    <?php
        print_r($csv_file);
        print __FILE__. " ".__LINE__;
    ?>
    </pre>
    <?php // exit;
  }
 
 
  /*
  stdClass Object
(
    [filename] => sites/default/files/tools/csv/siteadmin_2013_04_15_13_33_45.csv
    [basename] => siteadmin_2013_04_15_13_33_45.csv
    [name] => siteadmin_2013_04_15_13_33_45
)
*/

  return $output;
}
?>
Knowledge keywords: 
Drupal 6.x
file system
files