Change state of an order

state.php

<?php
	//get the remote host IP
$szRemoteIP = $_SERVER['REMOTE_ADDR'];

//this is the array holding the allowed IP's list;
$arrAllowedIPs = array("xxxxx","xxxxxx");

if (!in_array($szRemoteIP, $arrAllowedIPs))
{
    //if IP's is not in the list, deny access
    echo "You don't have the permissions to access this area from $szRemoteIP";
    exit(0);
}
$mageFilename = '../app/Mage.php';
require_once $mageFilename;
Mage::setIsDeveloperMode(true);
ini_set('display_errors', 1);
umask(0);
Mage::app('admin');
Mage::register('isSecureArea', 1);
Mage::app()->setCurrentStore(Mage_Core_Model_App::ADMIN_STORE_ID);
 
set_time_limit(0);
ini_set('memory_limit','1024M');

/*
    const STATE_NEW             = 'new';
    const STATE_PENDING_PAYMENT = 'pending_payment';
    const STATE_PROCESSING      = 'processing';
    const STATE_COMPLETE        = 'complete';
    const STATE_CLOSED          = 'closed';
    const STATE_CANCELED        = 'canceled';
    const STATE_HOLDED          = 'holded';
    const STATE_PAYMENT_REVIEW  = 'payment_review';
 */
$orderId = 'order num here';

$order = Mage::getModel('sales/order')->loadByIncrementID($orderId);
$order->setState(Mage_Sales_Model_Order::STATE_NEW, true);
$order->save();

foreach ($order->getAllItems() as $item) {
    $item->setQtyCanceled(0);
    $item->save();
}

echo $orderId."<br />Status Updated";
?>