WordPress 在 Feed 的结尾添加相关文章

/**

    *WordPress 在 Feed 的结尾添加相关文章

    *https://www.weixiaoduo.com/feed-add-related-posts/

*/

functionBing_feed_add_related_posts($content){

    if(!is_feed()||!$posttags=get_the_tags())return$content;

    $tags=array();

    foreach($posttagsas$tag)$tags[]=$tag->term_id;

    $query=newWP_Query(array(

        'tag__in'=>$tags,

        'post__not_in'=>array(get_the_ID()),

        'orderby'=>'rand',

        'posts_per_page'=>5//随机文章的数量

    ));

    if(!$query->have_posts())return$content;

    $related_posts='<h3> 相关文章</h3><ul>';

    while($query->have_posts()){

        $query->the_post();

        $related_posts.=the_title('<li><a href="'.esc_url(get_permalink()).'" title="'.esc_attr(get_the_title()).'" >','</a></li>',false);

    }

    $related_posts.='</ul>';

    wp_reset_postdata();

    return$content.$related_posts;

}

add_filter('the_content','Bing_feed_add_related_posts',18);