$is_boardSort = true; 
if($is_boardSort && $is_admin) $colspan++; 

<?php if ($is_boardSort && $is_admin) { ?><th scope="col">정렬</th><?php } ?>

<?php if ($is_boardSort && $is_admin) { ?>
            <td style="width:180px;">
                <input type="text" name='forwardNum[<?php echo $list[$i]['wr_id'] ?>]' id="forwardNum_<?php echo $i ?>" value='' class="frm_input" style='width:50px;'>
                <font style="color:red"> 번 게시물앞으로</font>
            </td>
<?php } ?>

            <?php if($is_boardSort) { ?>
            <li><button type="submit" name="btn_submit" value="순번변경" onclick="document.pressed=this.value" class="btn btn_admin"><i class="fa fa-arrows" aria-hidden="true"></i> 순번변경</button></li>
            <?php } ?>

    <?php if ($is_boardSort && $is_admin) { ?>
    if(document.pressed == "순번변경") {
        select_forward("move");
        return;
    }
    <?php } ?>

<?php if ($is_boardSort && $is_admin) { ?>
// 선택한 게시물 순번 변경
function select_forward(sw) {
    var f = document.fboardlist;
    if (sw == 'move')
        str = "순번변경";
    var sub_win = window.open("", "move", "left=50, top=50, width=500, height=550, scrollbars=1");
    f.sw.value = sw;
    f.target = "move";
    f.action = "./forwardNum_update.php";
    f.submit();
}
<?php } ?>