Hi

is it possible that loading an xml is slowing down my site?

I've written this little function in php to iterate over an array of Strings to calculate the total amount of my followers

function getFeedCount() {

    foreach ($array as $value) {
        $xml = simplexml_load_file("http://api.feedburner.com/awareness/1.0/GetFeedData?uri=$value")
                or die ("Unable to load XML file!");
        $circulation += $xml->feed->entry['circulation'];
    }   
    return $circulation;
}

the array is about 10 items big and since I started using it, it really slowed down my site.

What could I do fix this issue.