check if remote webpage has been changed - php

Question

My PHP script does the following
It logins to a remote server with login and password using CURL, which works Great. echo $result; shows the logged in page contents.
Secondly what it does is to access a inner page ( which needs a person to be logged in ) and check if the page is remotely changed( updated) or not using CURL.
The error i am getting is "Access denied" in Part 2 of the code below, i think the Cookies is not persisting throughout the session? Is that the problem what changes should i do in the code.
<?
//Part 1
$username="username;
$password="pwd";
$url="http://abc.com/home?q=login&destination=filmmaker%2Fhome";
$cookie="cookie.txt";
$postdata = "name=".$username."&pass=".$password."&form_id=user_login&edit-name=".$username."&remember_me=1";
$ch = curl_init();
curl_setopt ($ch, CURLOPT_URL, $url);
curl_setopt ($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt ($ch, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.6) Gecko/20070725 Firefox/2.0.0.6");
curl_setopt ($ch, CURLOPT_TIMEOUT, 60);
curl_setopt ($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_COOKIEJAR, $cookie);
curl_setopt ($ch, CURLOPT_COOKIEFILE, $cookie);
curl_setopt ($ch, CURLOPT_REFERER, $url);
curl_setopt ($ch, CURLOPT_POSTFIELDS, $postdata);
curl_setopt ($ch, CURLOPT_POST, 1);
$result = curl_exec ($ch);
echo $result;
//Part 2
$curl = curl_init("http://abc.com/filmmaker/home");
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_NOBODY, true);
curl_setopt($curl, CURLOPT_COOKIEFILE, $cookie);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_FILETIME, true);
$result = curl_exec($curl);
if ($result === false) {
die (curl_error($curl));
}
$timestamp = curl_getinfo($curl, CURLINFO_FILETIME);
if ($timestamp != -1) { //otherwise unknown
echo date("Y-m-d H:i:s", $timestamp); //etc
}
curl_close($ch);
?>

Answer 1

Part 2 needs:
curl_setopt($curl, CURLOPT_COOKIEFILE, $cookie);
This will send the cookies that were saved by the CURLOPT_COOKIEJAR option in Part 1.