php - 获取wordpress插件页面中的当前页面ID

Question

我需要在循环外获取 WordPress 插件页面中的当前 page id。我为获取当前 page id 编写的代码在我的插件页面中。我尝试了很多代码，但不起作用

$page_object = get_queried_object();
$page_id     = get_queried_object_id();


 // "Dirty" pre 3.1
 global $wp_query;

$page_object = $wp_query->get_queried_object();
$page_id     = $wp_query->get_queried_object_id();

但这对我不起作用。

  global $post;
  echo "pageid: ".$post->ID;

这也行不通。

当我尝试

     global $wp_query;
     $post_obj = $wp_query->get_queried_object();
     $Page_ID = $post_obj->ID;
     echo $Page_ID;

然后出现错误信息

Fatal error: Call to a member function get_queried_object() on a non-object in H:\xampp\htdocs\wordpress\wp-content\plugins\wpk\wpk.php on line 876

当我打印时:

global $wp_query;
print_r($wp_query);

那么结果是:

WP_Query Object
(
    [query] => 
    [query_vars] => Array
        (
        )

    [tax_query] => 
    [meta_query] => 
    [date_query] => 
    [queried_object] => 
    [queried_object_id] => 
    [request] => 
    [posts] => 
    [post_count] => 0
    [current_post] => -1
    [in_the_loop] => 
    [post] => 
    [comments] => 
    [comment_count] => 0
    [current_comment] => -1
    [comment] => 
    [found_posts] => 0
    [max_num_pages] => 0
    [max_num_comment_pages] => 0
    [is_single] => 
    [is_preview] => 
    [is_page] => 
    [is_archive] => 
    [is_date] => 
    [is_year] => 
    [is_month] => 
    [is_day] => 
    [is_time] => 
    [is_author] => 
    [is_category] => 
    [is_tag] => 
    [is_tax] => 
    [is_search] => 
    [is_feed] => 
    [is_comment_feed] => 
    [is_trackback] => 
    [is_home] => 
    [is_404] => 
    [is_comments_popup] => 
    [is_paged] => 
    [is_admin] => 
    [is_attachment] => 
    [is_singular] => 
    [is_robots] => 
    [is_posts_page] => 
    [is_post_type_archive] => 
    [query_vars_hash] => 
    [query_vars_changed] => 1
    [thumbnails_cached] => 
    [stopwords:WP_Query:private] => 
)

我不知道如何解决这个问题，如何获取当前的页面id。如果你知道如何解决这个问题，那么我需要你的支持。提前致谢。

Answer 1

get_the_ID();或 $post->ID; 返回 Wordpress 中的当前页面或帖子 ID。

But you need to ensure that your post is saved in wordpress post table. Other wise you can't get the id , simply because of it is not an entry in wordpress database.

如果它是一个静态页面并且它不是 wordpress 帖子中的条目，那么 get_the_ID() 没有返回任何内容。

例如:get_the_ID() 不适用于帖子存档页面、wordpress 后端的管理页面等。

所以 根据这个问题，您正在尝试获取作为后端插件设置页面或任何存档页面的页面的 ID。

更新

Method to get the current post id in wordpress

(1) 全局 $post; $post->ID();

(2) 全局 $wp_query; $post_id = $wp_query->get_queried_object_id();

(3) 全局 $wp_query; $post_id = $wp_query->post->ID;

(4) get_the_ID();

[ 建议此标签必须在循环内。 ]

看到这个

      function get_the_ID() {
               $post = get_post();
               return ! empty( $post ) ? $post->ID : false;
                }

即 get_the_ID() 返回当前 $post 的 id。

(5) get_query_var('page_id')

[如果我们使用漂亮的永久链接，它将无法工作]
https://codex.wordpress.org/Function_Reference/get_query_var