WordPress后台文章缩略图默认情况下是不显示的,当然不乏部分主题已经开启了WordPress后台文章缩略图,但也只是部分在众多主题中很少有开启WordPress后台文章缩略图的,那么如果您的客户要求或者您也打算为您的WordPress后台文章缩略图添加那么这篇WordPress后台文章缩略图添加WordPress教程正适合您。

WordPress后台文章缩略图


 add_theme_support('post-thumbnails', array( 'post', 'page' ) );
    
    function fb_AddThumbColumn($cols) {
        
        $cols['thumbnail'] = __('Thumbnail');
        
        return $cols;
    }
    
    function fb_AddThumbValue($column_name, $post_id) {
            
            $width = (int) 35;
            $height = (int) 35;
            
            if ( 'thumbnail' == $column_name ) {
                // thumbnail of WP 2.9
                $thumbnail_id = get_post_meta( $post_id, '_thumbnail_id', true );
                // image from gallery
                $attachments = get_children( array('post_parent' => $post_id, 'post_type' => 'attachment', 'post_mime_type' => 'image') );
                if ($thumbnail_id)
                    $thumb = wp_get_attachment_image( $thumbnail_id, array($width, $height), true );
                elseif ($attachments) {
                    foreach ( $attachments as $attachment_id => $attachment ) {
                        $thumb = wp_get_attachment_image( $attachment_id, array($width, $height), true );
                    }
                }
                    if ( isset($thumb) && $thumb ) {
                        echo $thumb;
                    } else {
                        echo __('None');
                    }
            }
    }
    
    // 文章页调用
    add_filter( 'manage_posts_columns', 'fb_AddThumbColumn' );
    add_action( 'manage_posts_custom_column', 'fb_AddThumbValue', 10, 2 );
    
    // 页面调用
    add_filter( 'manage_pages_columns', 'fb_AddThumbColumn' );
    add_action( 'manage_pages_custom_column', 'fb_AddThumbValue', 10, 2 );
}

添加以上代码后就可以为您的WordPress后台文章缩略图添加好了,以后就可以很方便知道WordPress后台文章缩略图不需要去前端页面就能看到每篇文章的缩略图了。