protected function getDropDownDayOptions()
{
$formatter = new TSimpleDateFormatter($this->getDateFormat());
$days = array();
$requiresPadding = $formatter->getDayPattern() === 'dd';
for ($i = 1; $i <= 31; $i++) {
$days[$i] = $requiresPadding ? str_pad($i, 2, '0', STR_PAD_LEFT) : $i;
}
return $days;
}