我正在尝试通过RESTAPI导入post meta。我在父站点上设置了元值，但当我将帖子导入子站点时，会在值中添加其他字符。

下面是父站点的post meta的JSON表示：

 "post-meta-fields": {
            "_edit_lock": [
                "1498250457:1"
            ],
            "_edit_last": [
                "1"
            ],
            "color": [
                "#4298f4"
            ],
            "_thumbnail_id": [
                "6"
            ]
        },

下面是导入到子站点后的元数据：

"post-meta-fields": {
            "city_name": [
                "city_Columbus"
            ],
            "import": [
                "import"
            ],
            "color": [
                "a:1:{i:0;s:7:\\"#4298f4\\";}"
            ]
        }

最后，这里是我用来导入的cod：

function create_import_post_from_url($url, $post_args, $city_name ) {
$post_url = file_get_contents($url);
  $post_data = json_decode($post_url, true); 

  foreach($post_data as $article_array ) {
      $title = $article_array[\'title\'][\'rendered\'];
      if (!post_exists($title) ){
    if( empty($post_args)) {
        $post_args = array(
        \'post_author\' => $article_array[\'author\'],
        \'post_content\' => $article_array[\'content\'][\'rendered\'],
        \'post_content_filtered\' => \'\',
        \'post_title\' => $article_array[\'title\'][\'rendered\'],
        \'post_excerpt\' =>  $article_array[\'excerpt\'][\'rendered\'],
        \'post_status\' =>  $article_array[\'status\'],
        \'post_type\' =>  $article_array[\'type\'],
        \'comment_status\' =>  $article_array[\'comment_status\'],
        \'ping_status\' =>  $article_array[\'ping_status\'],
        \'post_password\' =>$article_array[\'post_password\'],
        \'to_ping\' => $article_array[\'to_ping\'],
        \'pinged\' => $article_array[\'pinged\'],
        \'post_parent\' =>  $article_array[\'post_parent\'],
        \'menu_order\' => $article_array[\'menu_order\'],
        \'guid\' => $article_array[\'guid\'][\'rendered\'],
        \'import_id\' => 0,
        \'context\' => \'\',
        \'meta_input\' => array(
       \'city_name\' => $city_name,
       \'import\' => \'import\',
       \'color\' => $article_array[\'post-meta-fields\'][\'color\'],
)
        );

    }
     wp_insert_post($post_args, $wp_error);
      }

    }

}

我一直无法在网上找到有关此问题的任何信息，因此非常感谢您的帮助！

 \'color\' => $article_array[\'post-meta-fields\'][\'color\']

\'color\' => $article_array[\'post-meta-fields\'][\'color\'][0]