Показываем стаж пользователя v.0.3

$tpl->set('{registration}', langdate("j F Y H:i", $row['reg_date']));

function user_reg_date ($reg_date){

$days = round((time() - $reg_date)/86400);  
                                                  
$count_days = true;

$years = floor($days / 365);
$days -= ($years * 365);
$monthes = floor($days / 30);
$days -= ($monthes * 30);

if ($monthes > 0){

    if ($monthes == 12){

        $count_days = false;
        $years++;
        $monthes = "";

    } elseif ($monthes > 6){

        $count_days = false;
        $monthes .= ' месяцев ';

    } else {

        if ($monthes == 1) $monthes .= ' месяц ';
        elseif ($monthes < 5) $monthes .= ' месяцa ';
        else $monthes .= ' месяцев ';

    }

} else $monthes = "";

if ($years > 0){

    if ($years == 1) $years .= ' год ';
    elseif ($years < 5) $years .= ' года ';
    else $years .= ' лет ';

    $count_days = false;

} else $years = "";

if ($count_days && $days > 0){

    if ($days == 1 || $days == 21 || $days == 31) $days .= ' день';
    elseif ($days < 5) $days .= ' дня';
    elseif ($days < 21) $days .= ' дней';
    elseif ($days < 25) $days .= ' дня';
    else $days .= ' дней';

} else $days = "";

return $years.$monthes.$days;
}
$tpl->set('{registration}', user_reg_date ($row['reg_date']));