我拿不到comments_popup_link 显示foreach循环检索到的帖子。仅显示标题和永久链接。你知道为什么没有评论链接吗？

<?php
  if(count($ids)){
    echo \'<div id="tab-news" class="tab-all"><a id="link-news" class="link-all" href="/news">News</a></div><ul>\';
    foreach($ids as $id){
       echo \'<li><a href="\'.get_permalink( $id ).\'">\'.get_the_title( $id ).\'</a>\';
       if ( comments_open() ) :
       echo \'<p>\';
       comments_popup_link( \'\', \'<span class="onecomment">1 comment</span>\', \'<span class="morecomments">% comments</span>\', \'\');
       echo \'</p>\';
       endif;
    }
    echo \'</li></ul>\';
   }