Untitled

<?php
/**
 * Echo Filtered List
 */
function filtered_list() {
    $authors = get_users('orderby=nicename');
    $all_authors = array();
    foreach($authors as $author)
        if(count_user_posts($author->id) > 0) {
            array_push($all_authors, $author)
        }
    }
    return $all_authors;
}

function contributors() {
    $authors = filtered_list();
    for($i = 0; $i < count($authors); $i++) {
        if ($i == count($authors) - 1) {
            echo "<li class='author-last clearfix'>";
        } else {
            echo "<li class='author clearfix'>";
        }
    }
}
?>