左类别菜单 - 更改一个菜单项的渲染

Question

代码

<div class="box">
  <?php foreach ($categories as $category) { ?>
  <li>
    <?php if ($category['category_id'] == $category_id) { ?>
    <a href="<?php echo $category['href']; ?>" class="active"><?php echo $category['name']; ?></a>
    <?php } else { ?>
    <a href="<?php echo $category['href']; ?>"><?php echo $category['name']; ?></a>
    <?php } ?>
    <?php if ($category['children']) { ?>

我需要改变具体菜单项的呈现方式，让我们说一下ID为73的类别。我怎样才能在上面的模板中做到这一点？