Habilitar a exibição de miniaturas (thumbnails) em feeds RSS

				
					function add_featured_image_to_feed($content) {
    global $post;
    if (has_post_thumbnail($post->ID)) {
        $content = '<p>' . get_the_post_thumbnail($post-&gt;ID) . '</p>' . $content;
    }
    return $content;
}
add_filter('the_excerpt_rss', 'add_featured_image_to_feed');
add_filter('the_content_feed', 'add_featured_image_to_feed');