Magento: get category tree view

Magento get category tree view

Output View

Step 1 Goto theme/layout/catalog.xml put this code in file 

    <reference name="left">
     <block type="catalog/navigation" name="category_list_sidebar" template="catalog/navigation/categorymenu.phtml"/>
    </reference>

Step 2 Goto theme/template/catalog/ thane create navigation folder and put categorymenu.phtml file inside.

<?php
     $_helper = Mage::helper('catalog/category');
     $_categories = $_helper->getStoreCategories();
     $currentCategory = Mage::registry('current_category');
    ?>
    <div class="block block-list block-categorys">
        <div class="block-title">
         <strong><span>Category</span></strong>
        </div>
     <div class="block-content">
        <ul class="category_sub">
     <?php if (count($_categories) > 0){ ?>
    
                    <?php
     global $index;
     global $data;
    
     foreach($_categories as $_category){
    
     $check_child_class = check_child_par($_category->getId());
     $collaps = ($check_child_class)? "<span class='show-cat'>+</span>" : "";
     echo "<li class='".$check_child_class."'>";
     echo "<a href='".$_helper->getCategoryUrl($_category)."'>".$_category->getName();
     echo " (".product_count($_category->getId()).")";
     echo "</a>".$collaps;
     echo check_child($_category->getId());
     echo "</li>";
    
     }
     }
     function check_child($cid){
     $_helper = Mage::helper('catalog/category');
     $_subcategory = Mage::getModel('catalog/category')->load($cid);
     $_subsubcategories = $_subcategory->getChildrenCategories();
    
     if (count($_subsubcategories) > 0){
     echo "<ul>";
     foreach($_subsubcategories as $_subcate){
    
     $check_child_class = check_child_par($_subcate->getId());
     $collaps = ($check_child_class)? "<span class='show-cat'>+</span>" : "";
    
     echo "<li class='".$check_child_class."'>";
     echo "<a href='".$_helper->getCategoryUrl($_subcate)."'>".$_subcate->getName();
     echo " (".product_count($_subcate->getId()).")";
     echo "</a>".$collaps;
     echo check_child($_subcate->getId());
     echo "</li>";
     }
     echo "</ul>";
     }else{
     return "";
     }
     }
    
    
     function check_child_par($cid){
    
     $_subcat = Mage::getModel('catalog/category')->load($cid);
     $_subsubcats = $_subcat->getChildrenCategories();
    
     if (count($_subsubcats) > 0){
     return "parent";
     }else{
     return "";
     }
     }
    
     function product_count($cid){
     $products_count = Mage::getModel('catalog/category')->load($cid)->getProductCount();
     return $products_count;
     }
    ?>
    </ul>
     </div>
    </div>