DateHelper::weekDaysOrdered

public static DateHelper::weekDaysOrdered($weekdays)

public static function weekDaysOrdered($weekdays) {
  $first_day = \Drupal::config('system.date')->get('first_day');
  if ($first_day > 0) {
    for ($i = 1; $i <= $first_day; $i++) {
      // Reset the array to the first element.
      reset($weekdays);
      // Retrieve the first week day value.
      $last = current($weekdays);
      // Store the corresponding key.
      $key = key($weekdays);
      // Remove this week day from the beginning of the array.
      unset($weekdays[$key]);
      // Add this week day to the end of the array.
      $weekdays[$key] = $last;
    }
  }
  return $weekdays;
}