Ultimate Member - Upcoming Birthday future age as tag line in the Member Directory

Ultimate Member - Upcoming Birthday future age as tag line in the Member Directory

add_filter("um_ajax_get_members_data","um_061522_future_age_birthdays", 10, 3 );
function um_061522_future_age_birthdays( $data_array, $user_id, $directory_data ){

    $directory_id = $directory_data['form_id'];

    if( 325 !== $directory_id ) return $data_array;

    um_fetch_user( $user_id );
        
    $hours_in_day   = 24;
    $minutes_in_hour= 60;
    $seconds_in_mins= 60;
    $birth_date     = new DateTime( um_user("birth_date") );
    $current_date   = new DateTime();

    $diff           = $birth_date->diff($current_date);

    $years     = $diff->y + 1;
    $months    = ($diff->y * 12) + $diff->m + 1;
    $weeks     = floor($diff->days/7) + 1;
    $days      = $diff->days + 1;
    $turns_text = __("Turning",'ultimate-member');

    if( $days < 7 ){
        $data_array['birth_date'] = $turns_text . ' '. $days . ' ' . _n( 'day old', 'days old', $days, 'ultimate-member'  );
    }else if( $days >= 7 && $weeks < 4 ){
        $data_array['birth_date'] = $turns_text . ' '. $weeks . ' ' . _n( 'week old', 'weeks old', $weeks, 'ultimate-member'  );
    }else if( $weeks >=4 && $months < 12 ){
        $data_array['birth_date'] = $turns_text . ' '. $months . ' ' . _n( 'month old', 'months old', $months, 'ultimate-member'  );
    }else if( $months >= 12 || $years > 1 ){
        $data_array['birth_date'] = $turns_text . ' '. $years . ' ' . _n( 'year old', 'years old', $years, 'ultimate-member'  );
    }

    return $data_array;
}

This code doesn't work, it's confusing people