public function getBirthdayPersons($month1, $day1 = null, $month2 = null, $day2 = null)
{
if ($month2 == null) {
$month2 = $month1;
}
if ($day2 == null) {
$day2 = $day1;
}
$filter = new filters\FilterDateBirth();
$filter->setDayBegin($day1);
$filter->setMonthBegin($month1);
$filter->setDayEnd($day2);
$filter->setMonthEnd($month2);
$this->addFilter($filter);
$this->addFilter(new filters\FilterOnlyRecent());
return $this->getAllPersons();
}