Formのdateで月選択の0が気になる

case 'month':
  if ($options['monthNames'] === true) {
    $data['01'] = __d('cake', 'January');
    $data['02'] = __d('cake', 'February');
    $data['03'] = __d('cake', 'March');
    $data['04'] = __d('cake', 'April');
    $data['05'] = __d('cake', 'May');
    $data['06'] = __d('cake', 'June');
    $data['07'] = __d('cake', 'July');
    $data['08'] = __d('cake', 'August');
    $data['09'] = __d('cake', 'September');
    $data['10'] = __d('cake', 'October');
    $data['11'] = __d('cake', 'November');
    $data['12'] = __d('cake', 'December');
  } elseif (is_array($options['monthNames'])) {
    $data = $options['monthNames'];
  } else {
    for ($m = 1; $m <= 12; $m++) {
      $data[sprintf("%02s", $m)] = strftime("%m", mktime(1, 1, 1, $m, 1, 1999));
    }
  }
  break;

$data[sprintf("%02s", $m)] = date("n", mktime(1, 1, 1, $m, 1, 1999));