게시판그룹에 있는 table를 Select박스로 가져올수 있나요?

<?php 
    if($board['gr_id']){
        $sql = "select * from ".$g5['board_table']." where gr_id = '".$board['gr_id']."'";
        $res = sql_query($sql);
?>
    <select id="bo_select">
        <?php for($i=0;$g_board = sql_fetch_array($res);$i++){?>
            <option value='<?php echo $g_board['bo_table']?>' <?php if($bo_table == $g_board['bo_table']){ echo "selected"; }?>><?php echo $g_board['bo_subject']?></option>
        <?php }?>
    </select>
<script>
$("#bo_select").on("change",function(){
    $(location).attr("href","<?php echo G5_BBS_URL;?>/board.php?bo_table="+$("option:selected",this).val());
});
</script>
<?php }?>