<?php 
header('Content-Type: text/html; charset=utf-8'); 

function getFeed($url){ 
    $ch = curl_init(); 
    curl_setopt($ch,CURLOPT_URL,$url); 
    curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
    curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,10); 
    $data = curl_exec($ch); 
    curl_close($ch); 
    return $data; 
} 

$feeds = array( 
            'http://site.com/1.xml', 
            'http://site2.com/2.xml', 
            'http://site3.com/3.xml' 
            ); 

    echo '<ul>'; 
    foreach ($feeds as $feed) { 
        $xml  = @simplexml_load_string(getFeed($feed)); 
        foreach ($xml->channel->item as $rss){
            echo '<li><a href="'.$rss->link.'" title="'.$rss->pubDate.'" target="_blank">'.strip_tags($rss->title).'</a></li>'; 
        } 
    } 
    echo '</ul>'; 
?>