我正在寻找一种解决方案，以排除每篇文章中的特色图像/缩略图，因此我发现this great piece of code 并将其添加到函数中。php。它工作得很好，除了一件事：它使Lightbox jquery插件变得无用。

我在代码中看到的区别是这样的。使用代码：

<a href=\'http://site.com/wp-content/uploads/2012/01/main-image-2.jpg\' title=\'main-image-2\'><img width="150" height="150" src="http://gamebox.la/wp-content/uploads/2012/01/main-image-2-150x150.jpg" class="attachment-thumbnail" alt="main-image-2" title="main-image-2" /></a>

无：

<a href=\'http://site.com/wp-content/uploads/2012/01/main-image-2.jpg\' title=\'main-image-2\' rel="lightbox[170]"><img width="150" height="150" src="http://gamebox.la/wp-content/uploads/2012/01/main-image-2-150x150.jpg" class="attachment-thumbnail" alt="main-image-2" title="main-image-2" /></a>

过滤器似乎对post\\u gallery做了一些事情，使WP不显示Lightbox部分（missing rel=“Lightbox[]”），但我不明白为什么它会这样做。

函数中的参考代码。php发件人here:

function exclude_thumbnail_from_gallery($null, $attr)
{
    if (!$thumbnail_ID = get_post_thumbnail_id())
        return $null; // no point carrying on if no thumbnail ID

    // temporarily remove the filter, otherwise endless loop!
    remove_filter(\'post_gallery\', \'exclude_thumbnail_from_gallery\');

    // pop in our excluded thumbnail
    if (!isset($attr[\'exclude\']) || empty($attr[\'exclude\']))
        $attr[\'exclude\'] = array($thumbnail_ID);
    elseif (is_array($attr[\'exclude\']))
        $attr[\'exclude\'][] = $thumbnail_ID;

    // now manually invoke the shortcode handler
    $gallery = gallery_shortcode($attr);

    // add the filter back
    add_filter(\'post_gallery\', \'exclude_thumbnail_from_gallery\', 10, 2);

    // return output to the calling instance of gallery_shortcode()
    return $gallery;
}
add_filter(\'post_gallery\', \'exclude_thumbnail_from_gallery\', 10, 2);

提前多谢！

UPDATE: 我找到了这个http://core.trac.wordpress.org/ticket/14130 它说它添加了filter post\\u gallery\\u输出，但我不知道为了尝试其他解决方案，我必须在当前代码中修改哪些内容。

function exclude_thumbnail_from_gallery($null, $attr)
{
    if (!$thumbnail_ID = get_post_thumbnail_id())
        return $null; // no point carrying on if no thumbnail ID

    // temporarily remove the filter, otherwise endless loop!
    remove_filter(\'post_gallery\', \'exclude_thumbnail_from_gallery\');

    // pop in our excluded thumbnail
    if (!isset($attr[\'exclude\']) || empty($attr[\'exclude\']))
        $attr[\'exclude\'] = array($thumbnail_ID);
    elseif (is_array($attr[\'exclude\']))
        $attr[\'exclude\'][] = $thumbnail_ID;

    // now manually invoke the shortcode handler
    $gallery = gallery_shortcode($attr);

    // add the filter back
    add_filter(\'post_gallery\', \'exclude_thumbnail_from_gallery\', 10, 2);

    // return output to the calling instance of gallery_shortcode()
    return $gallery;
}
add_filter(\'post_gallery\', \'exclude_thumbnail_from_gallery\', 10, 2);