查看下面的代码。函数返回以todays日期发布的许多帖子。您只需稍微修改导航，即可将此数字计数器添加到菜单栏。

echo "<h1>Today is: " . date("Y-m-d") . "</h1>";

function published_today() {
  $counter = 0;
  $posts = get_posts(array(\'numberposts\'=>-1));
  foreach ($posts as $post){
    if (get_the_time(\'Y-m-d\', $post->ID) === date("Y-m-d")) {
      $counter++;
    }
  }
  return "Posts published today: " . $counter;
}

echo published_today();