서브메뉴에 addclass로 active를 추가할수 없을까요?

<?php if ($sub_page || $bo_table) { ?>
    <div class="sub_head sub1 hidden-xs">

    </div>
    <div class="sub_menu container hidden-xs">
        <ul class="sub_ul row">
            <?php
            $k = 0;
            ?>

                <?php
                if (empty($menu_datas2)) {
                    foreach ($menu_datas as $row) {
                        foreach ((array) $row['sub'] as $row2) {
                            if (strpos($row2['me_link'], $sub_page) !== false) {
                                $menu_on2 = $row2;
                                $menu_datas2 = $row['sub'];
                                break;
                            }

                            if (!empty($bo_table)) {
                                if (strpos($row2['me_link'], $bo_table) !== false) {
                                    $menu_on2 = $row2;
                                    $menu_datas2 = $row['sub'];
                                    break;
                                }
                            }
                        }
                    }
                }
                $menu_on;
                foreach ($menu_datas2 as $row) {
                    if (empty($row)) continue;
                    if (empty($menu_on2)) {
                        if (strpos($row['me_link'], $co_id) !== false) $menu_on2 = $row;

                    }
                    ?>
            <li class="col sub_category <?php if($sub_page=="sub_category") echo 'class="active"';?>"><a href="<?php echo $row['me_link']; ?>"><?php echo $row['me_name'] ?></a> </li>
                    <?php
                    $k++;
                }
                if ($k == 0) {  ?>
            <li id="gnb_empty">메뉴 준비 중입니다.<?php if ($is_admin) { ?> <br><a href="<?php echo G5_ADMIN_URL; ?>/menu_list.php">관리자모드 &gt; 환경설정 &gt; 메뉴설정</a>에서 설정하세요.<?php } ?></li>
        <?php } ?>

        </ul>
    </div>
<?php } ?>