Magento - Copy/duplicate Categories

gistfile1.php

<?php

if(!is_numeric($_GET['id']))die('Please specify a category ID');

$catId = $_GET['id'];

$xml = simplexml_load_file('app/etc/local.xml');
$host = $xml->global->resources->default_setup->connection->host;
$username = $xml->global->resources->default_setup->connection->username;
$password = $xml->global->resources->default_setup->connection->password;
$dbname = $xml->global->resources->default_setup->connection->dbname;
$res = mysql_pconnect($host, $username, $password);
mysql_select_db($dbname);

$catsDone = 0;
duplicate_entity($catId);

// Fix the children count for all (sub)categories
$sql = "CREATE TABLE catalog_category_entity_tmp LIKE catalog_category_entity";
mysql_query($sql);

$sql = "INSERT INTO catalog_category_entity_tmp SELECT * FROM catalog_category_entity";
mysql_query($sql);

$sql = "UPDATE catalog_category_entity cce SET children_count = ( SELECT count(cce2.entity_id) – 1 as children_county FROM catalog_category_entity_tmp cce2 WHERE PATH LIKE CONCAT(cce.path,'%') )";
mysql_query($sql);

$sql = "DROP TABLE catalog_category_entity_tmp";
mysql_query($sql);

echo $catsDone . '<p>Categories duplicated.</p>';

function duplicate_entity($id, $parent_id = null) {

    global $catsDone;

    mysql_query("SET NAMES 'utf8'");
    // Grab category to copy
    $sql = "SELECT * FROM catalog_category_entity WHERE entity_id = " . $id;
    $query_entity = mysql_query($sql);

    $entity = mysql_fetch_object($query_entity);

    if(!$parent_id) $parent_id = $entity->parent_id;

    mysql_query("INSERT INTO catalog_category_entity (entity_type_id, attribute_set_id, parent_id, created_at, updated_at, path, position, level, children_count) VALUES ({$entity->entity_type_id}, {$entity->attribute_set_id}, {$parent_id}, NOW(), NOW(), '', {$entity->position}, {$entity->level}, {$entity->children_count})");
    $newEntityId = mysql_insert_id();

    $query = mysql_query("SELECT path FROM catalog_category_entity WHERE entity_id = " . $parent_id);
    $parent = mysql_fetch_object($query);
    $path = $parent->path . '/' . $newEntityId;

    mysql_query("UPDATE catalog_category_entity SET path='". $path."' WHERE entity_id=". $newEntityId);

    foreach(array('datetime', 'decimal', 'int', 'text', 'varchar') as $dataType) {
        $sql = "SELECT * FROM catalog_category_entity_" . $dataType . " WHERE entity_id=" . $entity->entity_id;
        $query = mysql_query($sql);

        while ($value = mysql_fetch_object($query)) if (is_null($value->value)) {
            mysql_query("INSERT INTO catalog_category_entity_".$dataType." (entity_type_id, attribute_id, store_id, entity_id, value) VALUES ({$value->entity_type_id}, {$value->attribute_id}, {$value->store_id}, {$newEntityId}, NULL)");
        } else {
            mysql_query("INSERT INTO catalog_category_entity_".$dataType." (entity_type_id, attribute_id, store_id, entity_id, value) VALUES ({$value->entity_type_id}, {$value->attribute_id}, {$value->store_id}, {$newEntityId}, '{$value->value}')");
        }
    }

    //for Products
    $sql = "SELECT * FROM catalog_category_product WHERE category_id = " . $id;
    $query = mysql_query($sql);

    while ($value = mysql_fetch_object($query)) {
        $sql = "INSERT INTO catalog_category_product (category_id, product_id, position) VALUES ({$newEntityId},{$value->product_id},{$value->position})";
        echo $sql;

        if(!mysql_query($sql))
            echo("Error");
    }

    $sql = "SELECT entity_id FROM catalog_category_entity WHERE parent_id = " . $id;
    $query = mysql_query($sql);

    while ($entity = mysql_fetch_object($query)) {
        duplicate_entity($entity->entity_id, $newEntityId);
    }
    $catsDone++;

}

?>