【WordPress】RSS Atomフィードに画像を入れる(修正版)

function do_post_thumbnail_feeds($content) {
    global $post;
    if(has_post_thumbnail($post->ID)) {
        $content = '<div>'.get_the_post_thumbnail($post->ID,array(400,400)) .
        '</div>'.$content;
    }
    return $content;
}
add_filter('the_excerpt_rss', 'do_post_thumbnail_feeds');
add_filter('the_content_feed', 'do_post_thumbnail_feeds');

function do_post_thumbnail_feeds($content) { global $post; if(has_post_thumbnail($post->ID)) { $content = '<div>'.get_the_post_thumbnail($post->ID,array(400,400)) . '</div>'.$content; } return $content; } add_filter('the_excerpt_rss', 'do_post_thumbnail_feeds'); add_filter('the_content_feed', 'do_post_thumbnail_feeds');