연혁 게시판 만들고 있는데 도와주세용 ㅠ 채택완료

<ul class="list">
    <?
    $sql = "select * from ".$write_table." where wr_is_comment = '0' group by wr_subject order by wr_subject desc";
    $result = sql_query($sql);
    for ($i=0; $history_y=sql_fetch_array($result); $i++) {
    ?>
    <li class="list-item">
        <dl>
            <dt class="year"><?=$history_y['wr_subject']?></dt>
            
            <dd>
                <?
                $sql2 = "select * from ".$write_table." where wr_is_comment = '0' and wr_subject = '{$history_y[wr_subject]}' group by wr_1 order by wr_1 desc";
                $result2 = sql_query($sql2);
                for ($i=0; $history_m=sql_fetch_array($result2); $i++) {
                ?>
                    <ul class="content">
                        <li class="month"><?=$history_m['wr_1']?></li>
                        <li class="history">
                            <?
                            $sql3 = "select * from ".$write_table." where wr_is_comment = '0' and wr_1 = '{$history_m[wr_1]}' order by wr_10 desc, wr_datetime desc";
                            $result3 = sql_query($sql3);
                            for ($i=0; $history_d=sql_fetch_array($result3); $i++) {
                                $thumb = get_list_thumbnail($bo_table, $history_d['wr_id'], 300, 0);
                            ?>
                                <? if ($thumb) { ?>
                                    <div class="img reveal"><img src="<?=$thumb['src']?>" /></div>
                                <? } ?>
                                <div class="desc">
                                    <label>
                                        <? if ($is_admin) { ?><input type="checkbox" name="chk_wr_id[]" value="<?=$history_d['wr_id']?>" id="chk_wr_id_<?=$i?>" class="modify"><? } ?>
                                        <span><?=nl2br($history_d['wr_content']);?></span>
                                    </label>
                                    <? if ($is_admin) { ?><a href="<?=G5_BBS_URL?>/write.php?w=u&bo_table=<?=$bo_table?>&wr_id=<?=$history_d['wr_id']?>" class="modify">수정</a><? } ?>
                                </div>
                            <? } ?>
                        </li>
                    </ul>
                <? } ?>
            </dd>
        </dl>
    </li>
    <? } ?>
</ul>