[WordPress] shortcode recent_posts

shortcode_recent_posts.php

<?php
add_shortcode('recent_posts', 'my_recent_posts');
function my_recent_posts($atts) {
  // デフォルトテンプレート
  $template = '<div style="border-bottom:dotted 1px #aaaaaa;margin-bottom:20px;font-size:14px">
  <div class="title"><a href="%s" target="_top">%s</a></div>
  <div class="day" style="font-size:12px;color:#999999">%s</div>
</div>
';

  // 引数の処理
  extract(shortcode_atts(array(
    'template' => $template,
    'args'     => 'post_type=post&posts_per_page=10',
    ), $atts));

  $the_list = '';

  // 最新のポスト取得
  $posts = get_posts($args);
  foreach ($posts as $post) {
    $the_list .= sprintf(
      $template,
      esc_attr(get_permalink($post->ID)),
      esc_html($post->post_title),
      mysql2date("Y年m月j日", $post->post_date)
      );
  }

  return $the_list;
}