您可以使用以下代码获取分类法中的帖子数量：

$args = array(
  \'post_type\'     => \'post\',
  \'post_status\'   => \'publish\',
  \'posts_per_page\' => -1,
  \'tax_query\' => array(
    array(
      \'taxonomy\' => \'your-taxonomy-name\',
      \'field\'    => \'slug\',
      \'terms\'    => \'some-slug\',
    )
  )
);
$query = new WP_Query( $args );
echo $query->post_count;

您可以使用以下代码获取分类法中的帖子数量：

$args = array(
  \'post_type\'     => \'post\',
  \'post_status\'   => \'publish\',
  \'posts_per_page\' => -1,
  \'tax_query\' => array(
    array(
      \'taxonomy\' => \'your-taxonomy-name\',
      \'field\'    => \'slug\',
      \'terms\'    => \'some-slug\',
    )
  )
);
$query = new WP_Query( $args );
echo $query->post_count;