总计月数

Question

I have to find total months between two dates in Unix timestamp formats. I want to create a PHP function for that. I've tried this:

get_total_month($startunixdate, $endunixdate) {
    $monthdiff = $endunixdate-$startunixdate;
    $monthdiff = $monthdiff / 60*60*24*31; 
    return $monthdiff;
}

Does this function consider leap years as well as month with 30 and 31 separately, or it will just count an approximate month?

Answer 1

U can use PHP 5.3 datetime method.

$datetime1 = new DateTime('2009-10-11');
$datetime2 = new DateTime('2009-10-13');
$interval = $datetime1->diff($datetime2);
echo $interval->format('%R%a days');

Reference: PHP DateTime