<?php

$obj = new Mage_Catalog_Block_Navigation();
$store_cats = $obj->getStoreCategories();
$current_cat = $obj->getCurrentCategory();
$current_cat = (is_object($current_cat) ? $current_cat->getName() : '');
 
echo "<ul>";
foreach ($store_cats as $cat) 
{
	//if ($cat->getName() == $current_cat) {
		echo '<li class="parent"><a href="'.$this->getCategoryUrl($cat).'">'.$cat->getName()."</a>\n<ul>\n";
        foreach (Mage::getModel('catalog/category')->load($cat->getId())->getChildrenCategories() as $childCategory)
        {
          echo '<li><a href="'.$childCategory->getUrl().'">'.$childCategory->getName() .'</a></li>'; 
        }
		echo "</ul>\n</li>\n";
	//} else {
	//	echo '<li><a href="'.$this->getCategoryUrl($cat).'">'.$cat->getName()."</a></li>\n";
	//}
}
echo "</ul>";

?>
?>

html+php

1

Magento - get categories and sub cat for nav

<?php

$obj = new Mage_Catalog_Block_Navigation();
$store_cats = $obj->getStoreCategories();
$current_cat = $obj->getCurrentCategory();
$current_cat = (is_object($current_cat) ? $current_cat->getName() : '');
 
echo "<ul>";
foreach ($store_cats as $cat) 
{
	//if ($cat->getName() == $current_cat) {
		echo '<li class="parent"><a href="'.$this->getCategoryUrl($cat).'">'.$cat->getName()."</a>\n<ul>\n";
        foreach (Mage::getModel('catalog/category')->load($cat->getId())->getChildrenCategories() as $childCategory)
        {
          echo '<li><a href="'.$childCategory->getUrl().'">'.$childCategory->getName() .'</a></li>'; 
        }
		echo "</ul>\n</li>\n";
	//} else {
	//	echo '<li><a href="'.$this->getCategoryUrl($cat).'">'.$cat->getName()."</a></li>\n";
	//}
}
echo "</ul>";

?>
?>

copy | embed

• categories, 
• magento, 
• nav