尝试此操作，并验证直接查询时附件是否正确返回：

// helper function to return first regex match
function get_match( $regex, $content ) {
    preg_match($regex, $content, $matches);
    return $matches[1];
} 

// Extract the shortcode arguments from the $post
$shortcode_args = shortcode_parse_atts(get_match(\'/\\[gallery\\s(.*)\\]/isU\', $post->post_content));

// get the attachments specified in the "ids" shortcode argument
$attachments = get_posts(
    array(
        \'include\' => $shortcode_args["ids"], 
        \'post_status\' => \'inherit\', 
        \'post_type\' => \'attachment\', 
        \'post_mime_type\' => \'image\', 
        \'order\' => \'menu_order ID\', 
        \'orderby\' => \'post__in\', //this forces the order to be based on the order of the "include" param
    )
);

echo \'gallery count:\' . count( $attachments );