OpenCart Can I run this code to recreate my Category_Path table - opencart2.x

Question

I had an unfortunate incident with an Import/Export Extension that ate my Category_Path table data. Now none of my categories show up in the front or backend of my site.
Will the code below work to recreate my category_path table in OpenCart 2.1.0.1?
If so how do I go about implementing it?
<?php
// Configuration
if (is_file('config.php')) {
require_once('config.php');
}
// Startup
require_once(DIR_SYSTEM . 'startup.php');
// Registry
$registry = new Registry();
// Config
$config = new Config();
$registry->set('config', $config);
$db = new DB(DB_DRIVER, DB_HOSTNAME, DB_USERNAME, DB_PASSWORD, DB_DATABASE);
$registry->set('db', $db);
class myClass
{
protected $db;
public function __construct($db)
{
$this->db = $db;
}
// Database
function repairCategories($parent_id = 0)
{
$query = $this->db->query("SELECT * FROM `" . DB_PREFIX . "category` WHERE `parent_id` = '" .
(int)$parent_id . "'");
echo "SELECT * FROM `" . DB_PREFIX . "category` WHERE `parent_id` = '" . (int)$parent_id .
"'<br><br>";
foreach ($query->rows as $row)
{
// Delete the path below the current one
echo "DELETE FROM `" . DB_PREFIX . "category_path` WHERE `category_id` = '" . (int)$row
['category_id'] . "'<br>";
$this->db->query("DELETE FROM `" . DB_PREFIX . "category_path` WHERE `category_id` = '" .
(int)$row['category_id'] . "'");
// Fix for records with no paths
$level = 0;
$query = $this->db->query("SELECT * FROM `" . DB_PREFIX . "category_path` WHERE
`category_id` = '" . (int)$parent_id . "' ORDER BY `level` ASC");
echo "SELECT * FROM `" . DB_PREFIX . "category_path` WHERE `category_id` = '" .
(int)$parent_id . "' ORDER BY `level` ASC<br>";