我试图在侧边栏的一个页面中列出家长。我可以获取父页ID。我可以使用print\\r函数将其打印出来，但无论我尝试什么，都无法获取要显示的get\\u permalink和get\\u title。

  <?php
    global $wp_query;

  if(!$wp_query->post->post_parent){  //no parent
      $children = wp_list_pages("title_li=&depth=1&child_of=".$wp_query->post->ID."&echo=0");   // will display the subpages of this top level page
  }else{    // diplays only the subpages of parent level

      if($wp_query->post->ancestors){
          $ancestors = end($wp_query->post->ancestors);
          $ancestorsID = get_post_ancestors($wp_query->post->ID); 
          $children = wp_list_pages("title_li=&child_of=".$ancestors."&echo=0");}
  }

  if ($children) { 
      echo \'<ul>\';

      if($wp_query->post->ancestors){
      echo \'<li>\'; print_r($ancestorsID[0]); get_permalink($ancestorsID[0]); get_the_title($ancestorsID[0]); echo \'</li>\'; }

      else {echo \'<li><a href="\';the_permalink(); echo \'" title="Permalink to \';the_title(); echo \'" rel="bookmark">\'; the_title(); echo \'</a></li>\';}
      echo $children;
      echo \'</ul>\';
  } ?>