Php Magento显示主类别和一级子类别的正确方式

只是给你一个想法。我有三个级别的类别。
顶级>子类别>子类别的子类别

我不想显示子类别的子类别

下面的代码显示了每个类别。（很抱歉，粘贴的格式不太好。）

我正在做一件类似的事情。我基本上是在传递每个类别，并呈现我想要呈现的内容：

<?php # get category list ?>
<?php $_helper = Mage::helper('catalog/category') ?>
<?php $_categories = $_helper->getStoreCategories() ?>

<?php foreach($_categories as $_category) : ?>
    <?php # turn it into the proper model object ?>
    <?php $_category = Mage::getModel('catalog/category')->load($_category->getId()) ?>
    <a href="<?php echo $_category->getUrl() ?>"><?php echo $_category->getName() ?></a>         
    <?php foreach($_category->getChildrenCategories() as $_subCategory) : ?>
         <a href="<?php echo $_subCategory->getUrl() ?>"><?php echo $_subCategory->getName() ?></a>
    <?php endforeach ?>
<?php endforeach ?>



<?php # get category list ?>
<?php $_helper = Mage::helper('catalog/category') ?>
<?php $_categories = $_helper->getStoreCategories() ?>

<?php foreach($_categories as $_category) : ?>
    <?php # turn it into the proper model object ?>
    <?php $_category = Mage::getModel('catalog/category')->load($_category->getId()) ?>
    <a href="<?php echo $_category->getUrl() ?>"><?php echo $_category->getName() ?></a>         
    <?php foreach($_category->getChildrenCategories() as $_subCategory) : ?>
         <a href="<?php echo $_subCategory->getUrl() ?>"><?php echo $_subCategory->getName() ?></a>
    <?php endforeach ?>
<?php endforeach ?>