如何按评论数量显示前100名评论者

function top_comment_authors($amount = 100) {
    global $wpdb;
        $prepared_statement = $wpdb->prepare(
        'SELECT
        COUNT(comment_author) AS comments_count, comment_author, comment_author_url, MAX( comment_date ) as last_commented_date
        FROM '.$wpdb->comments.'
        WHERE comment_author != "" AND comment_type = "" AND comment_approved = 1
        GROUP BY comment_author
        ORDER BY comments_count DESC, comment_author ASC
        LIMIT %d',
        $amount);
    $results = $wpdb->get_results($prepared_statement);
    $output = '<ul class="top-comments">';
    foreach($results as $result) {
        $output .= '<li class="top-comment-author"><strong> <a href="'.$result->comment_author_url.'" target="_blank" rel="external nofollow">'.$result->comment_author.'</a></strong> 共'.$result->comments_count.' 条评论，最后评论 '.human_time_diff(strtotime($result->last_commented_date)).'前</li>';
    }
    $output .= '</ul>';
    echo $output;
}

<?php top_comment_authors(100); ?>