echo "There are $num days in February 2003\n";
$num = cal_days_in_month(CAL_GREGORIAN, 2, 2004);
echo "There are $num days in February 2004\n";
-$num = cal_days_in_month(CAL_GREGORIAN, -1, -2003);
-echo "There are $num days in -1, -2003\n";
$num = cal_days_in_month(CAL_GREGORIAN, 12, 2034);
echo "There are $num days in December 2034\n";
?>
There are 31 days in August 2003
There are 28 days in February 2003
There are 29 days in February 2004
-There are 990210 days in -1, -2003
There are 31 days in December 2034