Drop down med dato i en samlet dropdown

<?php
function getSelectString() {
    $months = array('', 'januar', 'februar', 'marts', 'april', 'maj', 'juni', 'juli', 'august', 'september', 'oktober', 'november', 'december');
   
    $now = time();
    $lastDay = date('d', strtotime('last day of this month', $now));
    $stmpFirstDay = strtotime('first day of next month', $now);
   
    $arrThisDay = explode('.', date('d.m.Y', $now));
    $thisDay = $arrThisDay[0];
    $thisMonth = $months[(int)$arrThisDay[1]];
    $thisYear = $arrThisDay[2];
   
    $arrNext = explode('.', date('m.Y', $stmpFirstDay));
    $nextMonth = $months[(int)$arrNext[0]];
    $nextYear = $arrNext[1];
   
    $arrHtml = array('<select name="dato">');
    for ($i=$thisDay; $i<=$lastDay; $i++) {
        $tmp = ($i<10 ? '0'.$i : $i).'. '.$thisMonth.' '.$thisYear;
        $arrHtml[] = '<option value="'.$tmp.'">'.$tmp.'</option>';
    }
    for ($i=1; $i<=$thisDay; $i++) {
        $tmp = ($i<10 ? '0'.$i : $i).'. '.$nextMonth.' '.$nextYear;
        $arrHtml[] = '<option value="'.$tmp.'">'.$tmp.'</option>';
    }
    $arrHtml[] = '</select>';
   
    return implode('', $arrHtml);
}

echo getSelectString();
?>

for ($i=0; $i<count($myArray); $i++)

for ($i=0,$j=count($myArray); $i<$j; $i++)