我正在使用此插件为页面添加标记：http://wordpress.org/extend/plugins/post-tags-and-categories-for-pages/

我还为自定义帖子添加了标签支持：

function codex_custom_init() {
    $args = array(
      \'public\' => true,
      \'has_archive\' => true,
      \'label\'  => \'Doing\',
      \'taxonomies\' => array(\'post_tag\'),
      \'supports\' => array( \'title\', \'editor\', \'thumbnail\', \'excerpt\')
    );
    register_post_type( \'doing\', $args );
}
add_action( \'init\', \'codex_custom_init\' );

在每个带有特定标记的页面中，我想显示与页面具有相同标记的相关自定义帖子，这可以做到吗？如何在页面上加载与标签相关的自定义帖子？

我已尝试使用此代码，但未显示任何相关帖子：

  <?php
      $tags = wp_get_post_tags($post->ID);
      if ($tags) {
          echo \'Related Posts\';
          $first_tag = $tags[0]->term_id;
          $args=array(
              \'tag__in\' => array($first_tag),
              \'post__not_in\' => array($post->ID),
              \'posts_per_page\'=>5,
              \'caller_get_posts\'=>1
          );
          $my_query = new WP_Query($args);
          if( $my_query->have_posts() ) {
              while ($my_query->have_posts()) : $my_query->the_post(); ?>
              <a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php the_title(); ?></a>

               <?php
               endwhile;
          }
          wp_reset_query();
      }
  ?>

$post_id = $GLOBALS[\'wp_the_query\']->get_queried_object_id();
$tags = get_the_tags( $post_id );
if (    $tags
     && !is_wp_error( $tags ) 
) {
    $args = [
        \'post__not_in\' => [$post_id],
        \'post_type\'    => \'doing\',
        \'tag__in\'      => [$tags[0]->term_id],
        // Rest of your args
    ];
    $my_query = new WP_Query( $args );

    // Your loop

    wp_reset_postdata();
}

print_r($tags);

echo $first_tag;