src/Date/DateUtils.php
public static function toRelativeTime($fromTime, $toTime = 'now', $format = 'days')
    {
        $startTime = new DateTime($fromTime);
        $endTime = new DateTime($toTime);

        return $startTime->diff($endTime)->$format;
    }
public static function toRelativeTime($fromTime, $toTime = 'now', $format = 'days')
    {
        $startTime = new DateTime($fromTime);
        $endTime = new DateTime($toTime);

        return $startTime->diff($endTime)->$format;
    }
Gets the difference between two date periods
@author Olawale Lawal <wale@cottacush.com>
@param $fromTime
@param string $toTime
@param string $format
@return string