typecho免插件开启评论@小尾巴

//获取评论的锚点链接
function get_comment_at($coid)
{
    $db   = Typecho_Db::get();
    $prow = $db->fetchRow($db->select('parent,status')->from('table.comments')
        ->where('coid = ?', $coid));//当前评论
    $mail = "";
    $parent = @$prow['parent'];
    if ($parent != "0") {//子评论
        $arow = $db->fetchRow($db->select('author,status,mail')->from('table.comments')
            ->where('coid = ?', $parent));//查询该条评论的父评论的信息
        @$author = @$arow['author'];//作者名称
        $mail = @$arow['mail'];
        if(@$author && $arow['status'] == "approved"){//父评论作者存在且父评论已经审核通过
            if (@$prow['status'] == "waiting"){
                echo '<p class="commentReview">（评论正在审核中）</p>';
            }
            echo '<a href="#comment-' . $parent . '">@' . $author . '</a>';
        }else{//父评论作者不存在或者父评论没有审核通过
            if (@$prow['status'] == "waiting"){
                echo '<p class="commentReview">（评论正在审核中）</p>';
            }else{
                echo '';
            }
        }

    } else {//母评论，无需输出锚点链接
        if (@$prow['status'] == "waiting"){
            echo '<p class="commentReview">（评论正在审核中）</p>';
        }else{
            echo '';
        }
    }
}

<?php $parentMail = get_comment_at($comments->coid)?><?php echo $parentMail;?>