我正在编写一个代码片段来显示帖子的附件，但对于每个用户来说，他应该只能看到自己的附件，而不能看到其他用户的附件

    $current_user=wp_get_current_user();

    //display all post attachments. see http://codex.wordpress.org/Template_Tags/get_posts#Show_attachments_for_the_current_post
    $args = array(
    \'post_type\' => \'attachment\',
    \'numberposts\' => null,
    \'post_status\' => null,
    \'post_parent\' => $post->ID
    );
echo "<b><u>Uploads By me</u></b>"; 
echo "<ol>";
    $attachments = get_posts($args);
    if ($attachments) {

        foreach ($attachments as $attachment) {
            echo "<li>";
            the_attachment_link($attachment->ID, false);
            echo " by author ".$attachment->post_author ;//debug info
            echo " and Current user is ".$current_user->ID ;//debug info
            if($current_user->ID==$attachment->ID) echo " Matched!! ";//debug info
            echo "</li>";
        }
    }
echo "<ol>";
//end attacmnets

我将代码放在自定义页面模板中，如下图所示，语句if($current_user->ID==$attachment->ID) echo " Matched!! "; 失败，这就是我想要依赖的有选择地显示附件。请帮忙

if($current_user->ID == $attachment->post_author) echo " Matched!! ";