Link Shortcodes

/* Start ShortCode call [links category] */
function dr_links($atts){
    if( !isset( $atts[0] ) ) return '';
    $category = $atts[0];
    $links = '';
    $bookmarks = get_bookmarks( array(
        'orderby'        => 'name',
        'order'          => 'ASC',
        'category_name'  => $category
    ));
    if( $bookmarks ) {
        $links = $links .'<ul class="post-links">';
        // Loop through each bookmark and add to output
        foreach ( $bookmarks as $bm ) {
            $links = $links ."\n" .'<li>';
            $links = $links .'<a class="postlink" href="'.$bm->link_url.'">';
            $links = $links .__($bm->link_name) .'</a></li>';
        }
        $links = $links .'<ul>';
    }
    return $links;
}
add_shortcode('links', 'dr_links');
add_filter('dr_links', 'do_shortcode');