WPDKDateTime::expirationDate PHP Method

expirationDate() public static method

Return a timestamp as sum from $date and $duration/$duration_type
public static expirationDate ( string $date, integer $duration, string $duration_type ) : integer
$date string Start date in MySQL format as YYYY-MM-DD HH:MM:SS
$duration integer Duration
$duration_type string Type as `days`, `minutes`, `months
return integer
    public static function expirationDate($date, $duration, $duration_type)
    {
        $expiredate = strtotime("+{$duration} {$duration_type}", strtotime($date));
        return $expiredate;
    }