Как сделать две RSS ленты новостей в одну из который публикуются только отмеченные новости?

<?php
/* Вывод информационных систем */
// Специальные предложения
$rss_mas_items = array();
$countItems = 0;

$InformationSystem = new InformationSystem();
$param_select = array();
$param_select['information_groups_id'] = 0;
$param_select['information_systems_id'] = 15;
$resource = $InformationSystem->GetExternalInformationSystemItem($param_select);
while($row = mysql_fetch_assoc($resource))
       {
          $rss_mas_items[$countItems]['title'] = $row['information_items_name'];
        $rss_mas_items[$countItems]['link']  = "/specials/".$row["information_items_url"];
        $rss_mas_items[$countItems]['description'] = $row["information_items_description"];
        $rss_mas_items[$countItems]['pubDate'] = $row["information_items_date"];
        $rss_mas_items[$countItems]['author'] = "Твой Гоа";
        $rss_mas_items[$countItems]['category'] = "Специальные предложения";
        $rss_mas_items[$countItems]['guid'] = $rss_mas_items[$countItems]['link'];
          $rss_mas_items[$countItems]['id'] = $row['information_items_id'];
        $countItems++;
      }

//Интересно об индии
$param_select['information_systems_id'] = 16;
$resource = $InformationSystem->GetExternalInformationSystemItem($param_select);
while($row = mysql_fetch_assoc($resource))
       {
          $rss_mas_items[$countItems]['title'] = $row['information_items_name'];
        $rss_mas_items[$countItems]['link']  = "/intresting/".$row["information_items_url"];
        $rss_mas_items[$countItems]['description'] = $row["information_items_description"];
        $rss_mas_items[$countItems]['pubDate'] = $row["information_items_date"];
        $rss_mas_items[$countItems]['author'] = "Твой Гоа";
        $rss_mas_items[$countItems]['category'] = "Интересно об Индии";
        $rss_mas_items[$countItems]['guid'] = $rss_mas_items[$countItems]['link'];
          $rss_mas_items[$countItems]['id'] = $row['information_items_id'];
        $countItems++;
      }

//Советы туристам
$param_select['information_systems_id'] = 24;
$resource = $InformationSystem->GetExternalInformationSystemItem($param_select);
while($row = mysql_fetch_assoc($resource))
       {
          $rss_mas_items[$countItems]['title'] = $row['information_items_name'];
        $rss_mas_items[$countItems]['link']  = "/advances/".$row["information_items_url"];
        $rss_mas_items[$countItems]['description'] = $row["information_items_description"];
        $rss_mas_items[$countItems]['pubDate'] = $row["information_items_date"];
        $rss_mas_items[$countItems]['author'] = "Твой Гоа";
        $rss_mas_items[$countItems]['category'] = "Советы туристам";
        $rss_mas_items[$countItems]['guid'] = $rss_mas_items[$countItems]['link'];
          $rss_mas_items[$countItems]['id'] = $row['information_items_id'];
        $countItems++;
      }

function cmp($a, $b) {
  return -$a['id'] + $b['id'];
}
usort ($rss_mas_items, 'cmp');

$rss =  new RssWrite();
$rss_mas_header = array();
$rss_mas_header['title'] = "Твой Гоа - экскурсии по ГОА";
$rss_mas_header['link'] = "http://new.tvoygoa.ru";
$rss_mas_header['description'] = "Твой Гоа. Организация экскурсий по Гоа и туров в Индию.";

echo($rss->CreateRSS($rss_mas_header, $rss_mas_items));
exit();
?>

$rss_mas_items[$countItems]['link']  = "http:/"."/new.tvoygoa.ru"."/specials/".$InformationSystem->GetPathItem($row['information_items_id'], $path);