Wordpress 用户元数组合并

问：

我创建了一个名为“hca_recent”的新用户元数据。我正在从 ajax 调用中提取数据并将其作为数组添加到元数据中。

$hca_recent_array = array( 
  'recent_count' => $new_recent_count,
  'post_id' => $post_id, 
  'video_id' => get_post_meta($post_id, "__cvm_video_id", true), 
  'post_title' => $_REQUEST['post_title'], 
  'video_url' => $_REQUEST['data_url'], 
);

$hca_recent = update_user_meta(get_current_user_id(), "hca_recent", $hca_recent_array);

这将输出以下数组：

Array
(
  [recent_count] => 42
  [post_id] => 667
  [video_id] => 881950864
  [post_title] => Receiver Blocking: COD + Dots Drill | Tee Martin
  [video_url] => https://player.vimeo.com/video/881950864?h=e9b41820da&autoplay=0&muted=0&loop=0&title=1&byline=1&portrait=1&color&dnt=0&background=0&transparent=0
)

这一切都很好。当触发另一个ajax调用时，我想添加到这个数组中。这就是问题发生的地方。我得到现有的用户元，如下所示：

$hca_recent_array_old = get_user_meta(get_current_user_id(), 'hca_recent', false);

然后，我想将现有数组与新的ajax调用事件合并。

$result_array = array_merge($hca_recent_array_old, $hca_recent_array);
$hca_recent = update_user_meta(get_current_user_id(), "hca_recent", $result_array);

我得到这个输出：

Array
(
    [0] => Array
        (
            [recent_count] => 42
            [post_id] => 667
            [video_id] => 881950864
            [post_title] => Receiver Blocking: COD + Dots Drill | Tee Martin
            [video_url] => https://player.vimeo.com/video/881950864?h=e9b41820da&autoplay=0&muted=0&loop=0&title=1&byline=1&portrait=1&color&dnt=0&background=0&transparent=0
        )

    [recent_count] => 43
    [post_id] => 695
    [video_id] => 881950748
    [post_title] => Tee Martin | Youth Coaching Keys to Success
    [video_url] => https://player.vimeo.com/video/881950748?h=d3b0944767&autoplay=0&muted=0&loop=0&title=1&byline=1&portrait=1&color&dnt=0&background=0&transparent=0
)

我需要这个数组与 [0]、[1]、[2] 等正确合并。任何帮助都非常感谢。

合并或重新创建数组的每个选项。