我的方法是创建一个名为相关帖子的模板部分。php或类似的东西。在其中，我会浏览帖子内容中的每个链接，查看该url是否对应于另一篇帖子（使用url_to_postid() 函数）。然后，我会将所有非零id保存到一个数组中，最后，我会运行一个辅助wp循环，以您想要的方式显示这些帖子（即缩略图+标题）。类似这样：

（此代码部分修改自this answer)

$cont = get_the_content();
$related_post_ids = array();

//Only proceed if there is content
if ( !empty( $cont ) ) {
    // Get page content
    $html = new DomDocument;
    libxml_use_internal_errors(true); //See https://stackoverflow.com/questions/9149180/domdocumentloadhtml-error
    $html->loadHTML( \'<?xml encoding="UTF-8">\' . $cont );
    libxml_use_internal_errors(false);
    $html->preserveWhiteSpace = false;

    // Loop through all content links
    foreach( $html->getElementsByTagName( \'a\' ) as $link ) {

        // Get link href
        $link_url = $link->getAttribute( \'href\' );

        //If link href is not empty
        if( !empty( $link_url ) ){
            //Try to find the post that is being linked
            $linked_postid = url_to_postid( $link_url );

            //If we find the post, add it to the related_post_ids array
            if($linked_postid != 0){
                array_push($related_post_ids, $linked_postid);
            }
        }
    }
}

//If we found other posts linked in the content
if( count($related_post_ids) > 0 ){
    //Run a secondary loop to display the related posts
    $q_args = array( 
        \'post_type\' => \'any\',
        \'post_status\' => \'publish\'
        \'posts_per_page\' => 3 //Limit how many you show
        \'post__in\' => $related_post_ids, //Get only the posts we found
        \'orderby\' => \'post__in\' //Order them in the same order as the links appear in the post\'s content
    ); 

    $relposts_query = new WP_Query( $q_args ); 
    
    if ( $relposts_query->have_posts() ) : 
        // Start the Loop 
        while ( $relposts_query->have_posts() ) : $relposts_query->the_post(); 
            //Add your markup here, you may use the_post_thumbnail( ) for the featured image and the_title( ) for the article title
        endwhile; 
    endif; 
    
    wp_reset_postdata(); 
}else{
    /*
     * You may want to write some backup code here, what to display if the post in question
     * did not have any links to other posts.
     */
}