我正在尝试编写一个插件，如果选中一个框（值1）并且帖子id不存在，那么它将创建一个页面。如果帖子id已经存在，那么我想用所做的任何更改来更新帖子。我有创建帖子（作为页面）的部分工作得很好。但是，当我尝试运行wp\\u update\\u post时，出现以下错误：

array_merge() [function.array-merge]: Argument #1 is not an array in /home/wpovernight/wpovernight.com/wp-includes/post.php on line 2996

因为错误与post有关。php，我猜这个问题是关于wp\\u update\\u post上的数组的，但我不确定我做错了什么。我觉得一切都很好。这是我的代码：

//Check if page exists
$page_check_404 = get_page_by_title($page_title_404);
// Checks if box is checked
if ($activate_404_page == 1) {
            $ss_404_page = array(
            \'post_title\'    => $page_title_404,
            \'post_content\'  => $ss_404_page_content,
            \'post_status\'   => \'publish\',
            \'post_author\'   => 1,
            \'post_type\'     => \'page\'
            );
            // If page doesn\'t exist, create it
            if(!isset($page_check_404->ID)){
            $ss_404_post_id = wp_insert_post( $ss_404_page );
            }
            //if page does exist, edit it
            if(isset($page_check_404->ID)){
                $ss_404_page_update = array(
                \'post_title\'    => $page_title_404,
                \'ID\'            => $ss_404_post_id,
                \'post_content\'  => $ss_404_page_content,
                \'post_status\'   => \'publish\',
                \'post_author\'   => 1,
                \'post_type\'     => \'page\'
                );
            wp_update_post( $ss_404_page_update );
            }   
}