그누보드 포인트 순위 mysql 점유율 관련

<?php
$sql_common = " and mb_id != '{$config['cf_admin']}' "; 
$rank_rows = 15; //출력 수 
$sql = " select * from {$g5['member_table']} where mb_point > '{$row['mb_point']}' {$sql_common} order by mb_point desc, mb_today_login desc limit {$rank_rows} "; 
$result = sql_query($sql);
for ($i=0; $row=sql_fetch_array($result); $i++) {
    $rank = number_format($i + 1);
    //$rank_name = get_sideview($row['mb_id'], $row['mb_nick'], $row['mb_email'], $row['mb_homepage']);
    $rank_name = $row['mb_nick'];
    $point = number_format($row['mb_point']);
    if ($rank == 1) {
        $rank_bg = ' rank_bg1';
    } else if ($rank == 2) {
        $rank_bg = ' rank_bg2';
    } else if ($rank == 3) {
        $rank_bg = ' rank_bg3';
    } else {
        $rank_bg = '';
    }
?>
    <li><span class="rank_bg<?php echo $rank_bg; ?>"><?php echo $rank; ?></span><?php echo $rank_name; ?><span class="rank_point"><?php echo $point; ?></span></li>
<?php } ?>