Automatikus fájl átnevezés

/**
 * Implements hook_token_info().
 */
function MODULE_token_info() {
  $info['tokens']['file']['fid-pad-left'] = array(
    'name' => t('Fid padded on the left'),
    'description' => t("Create a padded number from fid, e.g. 1 => 000001"),
  );
 
  return $info;
}
 
/**
 * Implements hook_tokens().
 */
function MODULE_tokens($type, $tokens, array $data = array(), array $options = array()) {
  $replacements = array();
 
  if ($type == 'file' && !empty($data['file'])) {
    $file = $data['file'];
 
    foreach ($tokens as $name => $original) {
      switch ($name) {
        case 'fid-pad-left':
          $replacements[$original] = str_pad($file->fid, 6, "0", STR_PAD_LEFT);
          break;
      }
    }
  }
 
  return $replacements;
}