使用另一个标记向WordPress RSS添加缩略图

Question

我正在使用Wordpress RSS在我的iOS项目中使用.Feed中没有缩略图链接,因此我搜索并找到此代码以添加缩略图链接到Feed.

/* include thumbnail in RSS feed */
function add_thumb_to_RSS($content) {
   global $post;
   if ( has_post_thumbnail( $post->ID ) ){
      $content = '' . get_the_post_thumbnail( $post->ID, 'thumbnail' ) . '' . $content;
   }
   return $content;
}
add_filter('the_excerpt_rss', 'add_thumb_to_RSS');
add_filter('the_content_feed', 'add_thumb_to_RSS')

此代码在feed中添加了图像链接,但它在description标记的开头添加了html代码,如下所示:

<description>
<![CDATA[
<img width="150" height="150" src="http://www.ipadia.co/wp-content/uploads/2012/02/sayfada-bul-150x150.png" class="attachment-thumbnail wp-post-image" alt="sayfada bul" title="sayfada bul" />Some text some text Some text some text Some text some text Some text some text Some text some text Some text some text ....
]]>
</description>

我想添加图像链接与另一个标签,如<image>或<thumb> the link </thumb>.所以我可以更容易地解析它.

我怎样才能做到这一点？提前致谢.

Answer 1

我终于解决了:)我改变了之前发布的功能.新功能是这样的:

add_action('rss2_item', function(){
  global $post;

  $output = '';
  $thumbnail_ID = get_post_thumbnail_id( $post->ID );
  $thumbnail = wp_get_attachment_image_src($thumbnail_ID, 'thumbnail');
  $output .= '<post-thumbnail>';
    $output .= '<url>'. $thumbnail[0] .'</url>';
    $output .= '<width>'. $thumbnail[1] .'</width>';
    $output .= '<height>'. $thumbnail[2] .'</height>';
    $output .= '</post-thumbnail>';

  echo $output;
});

这样可以<post-thumbnail>像我想要的那样在新标签中提供图像链接.