Sort a category and subcategory list array alphabetically in Magento

If you are dealing with magento category i am very sure that you’ll face this problem .Magento category fetching is not an issue its a child play but sorting thse categories is little tricky. see below code for category sort in alphabetic order.

<?php
$cats = Mage::getModel('catalog/category')->load(2)->getChildren();
$catIds = explode(',', $cats);

$categories = array();
$subCategories = array();
foreach ($catIds as $catId) {
    $category = Mage::getModel('catalog/category')->load($catId);
    $categories[$category->getName()] = $category->getUrl();

    $subcats = Mage::getModel('catalog/category')->load($catId)->getChildren();
    $subcatIds = explode(',', $subcats);
    if ($subcats) {
        foreach ($subcatIds as $subcatId) {
            $subCategory = Mage::getModel('catalog/category')->load($subcatId);
            $subCategories[$category->getName()][$subCategory->getName()] = $subCategory->getUrl();
        }
        ksort($subCategories[$category->getName()], SORT_STRING);
    }
}

ksort($categories, SORT_STRING);
?>                                

    <?php foreach ($categories as $name => $url): ?>
    

        <?php echo $name; ?>
        <?php
        foreach ($subCategories as $key => $values) {
        if($name == $key)
        {
        echo '
';
            foreach($values as $subName => $subUrl)
            {?>
                 
<?php echo $subName ?>
            <?php }
            echo "
";
        }
        }
        ?>
    
    <?php endforeach; ?>