Magento 1.9 export categories with TreeModel

exportCategories.php

<?php
ini_set("memory_limit", "10000M");
require_once "app/Mage.php";
umask(0);
Mage::app();
$category = Mage::getModel('catalog/category');
$tree = $category->getTreeModel();
$tree->load();
$ids = $tree->getCollection()->getAllIds();
if ($ids) {
    $string = '';
    $heading = '"store","categories","cat_id","is_active","meta_title",';
    foreach ($ids as $id) {
        if ($id > 0) {
            $cate_cre = Mage::getModel('catalog/category');
            $cate_cre->load($id);
            $treeurl = '';
            $cate_cre1 = Mage::getModel('catalog/category')->load($id);
            $treeurl = $cate_cre->getName();
            if ($cate_cre1->getParentId() > 0) {
                for ($i = 0;;$i++) {
                    if ($cate_cre1->getParentId() > 0) {
                        $abc = Mage::getModel('catalog/category')->load($cate_cre1->getParentId());
                        $pCat = $abc->getName();
                        if ($abc->getId() > 1) {
                            $treeurl = $pCat . '/' . $treeurl;
                        }
                        $cate_cre1 = $abc;
                    } else {
                        break;
                    }
                }
            }
            $store = "default";
            $string.= '"' . $store . '","' . $treeurl . '","' . $id . '","' . $cate_cre->getIsActive() . '","' . $cate_cre->getMetaTitle() . '"';
            $string.= "\n";
        }
    }
    $csv_output = $heading . "\n" . $string;
    $filename = "Categories-de";
    header("Content-type: application/vnd.ms-excel");
    header("Content-disposition: csv" . date("Y-m-d") . ".csv");
    header("Content-disposition: filename=" . $filename . ".csv");
    print $csv_output;
}
?>