$postdata = "method=pwg.users.add&pwg_token=".$token."&username=".urlencode($user)."&email=".$mail."&password=".urlencode($password)."&password_confirm=".urlencode($password);

$url = 'lurldemonsite/ws.php?format=json';
$ch = curl_init();
curl_setopt($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($ch, CURLOPT_FOLLOWLOCATION, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 1);
if ($cookie) {
     curl_setopt($ch, CURLOPT_COOKIE, $cookie); 
}
curl_setopt($ch, CURLOPT_REFERER, $url);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postdata);
curl_setopt($ch, CURLOPT_POST, 1);
curl_exec($ch);