Date Diff

public function getRemainingDaysBeforeExpiry($date)
    {
        $date_today = date('Y-m-d H:i');
        $date_expiry = date('Y-m-d H:i', strtotime($date));
 
        if($date_expiry > $date_today)
        {
            $date_today = new DateTime($date_today);
            $date_expiry = new DateTime($date_expiry);
            $difference = $date_today->diff($date_expiry);
 
            $years = ($difference->y > 1) ? 'yrs.' : 'yr';
            $months = ($difference->m > 1) ? 'mos' : 'mo';
            $days = ($difference->d > 1) ? 'days' : 'day';
 
            $remaining = '';
            $remaining .= ($difference->y > 0) ? "$difference->y $years " : '';
            $remaining .= ($difference->m > 0) ? "$difference->m $months " : '';
            $remaining .= ($difference->d > 0) ? "$difference->d $days " : '';
        }
 
        else
        {
            $remaining = 0;
        }
 
        return $remaining;
    }