viewing multiple RSS files

I want to acess RSS from different sites.
I have the following code for viewing RSS from different Sites.
Error is: Only Last Link i-e cnn_law.rss is retriewing others are not!
if i don't take $file as an array and only take one URL then its working fine but in case of array its not working and giving the above error.

<?php

set_time_limit(0);

$file[0] = "http://rss.cnn.com/rss/cnn_topstories.rss";
$file[1] = "http://rss.cnn.com/rss/cnn_health.rss";
$file[2] = "http://rss.cnn.com/rss/cnn_law.rss";

$rss_channel = array();
$currently_writing = "";
$main = "";
$item_counter = 0;

function startElement($parser, $name, $attrs) {
       global $rss_channel, $currently_writing, $main;
       switch($name) {
           case "RSS":
           case "RDF:RDF":
           case "ITEMS":
               $currently_writing = "";
               break;
           case "CHANNEL":
               $main = "CHANNEL";
               break;
           case "IMAGE":
               $main = "IMAGE";
               $rss_channel["IMAGE"] = array();
               break;
           case "ITEM":
               $main = "ITEMS";
               break;
           default:
               $currently_writing = $name;
               break;
       }
}

function endElement($parser, $name) {
       global $rss_channel, $currently_writing, $item_counter;
       $currently_writing = "";
       if ($name == "ITEM") {
           $item_counter++;
       }
}

function characterData($parser, $data) {
    global $rss_channel, $currently_writing, $main, $item_counter;
    if ($currently_writing != "") {
        switch($main) {
            case "CHANNEL":
                if (isset($rss_channel[$currently_writing])) {
                    $rss_channel[$currently_writing] .= $data;
                } else {
                    $rss_channel[$currently_writing] = $data;
                }
                break;
            case "IMAGE":
                if (isset($rss_channel[$main][$currently_writing])) {
                    $rss_channel[$main][$currently_writing] .= $data;
                } else {
                    $rss_channel[$main][$currently_writing] = $data;
                }
                break;
            case "ITEMS":
                if (isset($rss_channel[$main][$item_counter][$currently_writing])) {
                    $rss_channel[$main][$item_counter][$currently_writing] .= $data;
                } else {
                    $rss_channel[$main][$item_counter][$currently_writing] = $data;
                }
                break;
        }
    }
}

$xml_parser = xml_parser_create();
xml_set_element_handler($xml_parser, "startElement", "endElement");
xml_set_character_data_handler($xml_parser, "characterData");

for($i=0;$i<3;$i++)
{
if (!($fp = fopen($file[$i], "r")))
{
    die("could not open XML input");
        $i++;  
}
}

while ($data = fread($fp, 4096)) {
    if (!xml_parse($xml_parser, $data, feof($fp))) {
        die(sprintf("XML error: %s at line %d",
                    xml_error_string(xml_get_error_code($xml_parser)),
                    xml_get_current_line_number($xml_parser)));
    }
}
xml_parser_free($xml_parser);

// output HTML
print ("<div class=\"channelname\">" . $rss_channel["TITLE"] . "</div>"); 

if (isset($rss_channel["ITEMS"])) {
    if (count($rss_channel["ITEMS"]) > 0) {
        for($i = 0;$i < count($rss_channel["ITEMS"]);$i++) {
            if (isset($rss_channel["ITEMS"][$i]["LINK"])) {
            print ("\n<div class=\"itemtitle\"><a href=\"" . $rss_channel["ITEMS"][$i]["LINK"] . "\">" . $rss_channel["ITEMS"][$i]["TITLE"] . "</a></div>");
            } else {
            print ("\n<div class=\"itemtitle\">" . $rss_channel["ITEMS"][$i]["TITLE"] . "</div>");
            }
             print ("<div class=\"itemdescription\">" . $rss_channel["ITEMS"][$i]["DESCRIPTION"] . "</div><br />");         }
    } else {
        print ("<b>There are no articles in this feed.</b>");
    }
}

?>

Code (markup):