PHP Program to get total number of days in a month

<?php
$curmnth = date('m');
$curyear = date('Y');
function get_days_in_month($month, $year)
{
    if ($month == "02")
    {
        if ($year % 4 == 0) return 29;
        else return 28;
    }
    else if ($month == "01" || $month == "03" || $month == "05" || $month == "07" || $month == "08" || $month == "10" || $month == "12") return 31;
    else return 30;
}
$totDays = get_days_in_month($curmnth, $curyear);
printf("Total no of days in a current month : " . $totDays);
print "</br>";
?>

Output
Total no of days in a current month: 30