WordPressショートコードサンプル＞アイキャッチ付きお知らせ記事一覧

/*-----------------------------------
  アイキャッチ付き
  News表示ショートコード
  [news num="5"]
-----------------------------------*/
function getNewsItems($atts) {
  extract(shortcode_atts(array(
    "num" => '',  //最新記事リストの取得数
 ), $atts));
  global $post;
  $cat_id = get_category_by_slug('news')->cat_ID;
  $myposts = get_posts('numberposts='.$num.'&order=DESC&orderby=post_date&category='.$cat_id);
  if($myposts){
    $retHtml.='<ul class="news__list">';
    $catlink = get_category_link($cat_id);
    foreach($myposts as $post) :
      setup_postdata($post);

      //アイキャッチ画像(150)
      $image = wp_get_attachment_image_src( get_post_thumbnail_id($post->ID), "thumbnail" );//thumbnail, medium, large, full
      list( $src, $width, $height ) = $image;
      if($src):
        $thumb = '<div class="thumb"><a href="'.$entry_permalink.'"><img src="'.$src.'" width="80" alt="" class="responsive" /></a></div>';
      else:
        $thumb = '<div class="thumb"><a href="'.$entry_permalink.'"><img src="'.IMG150150.'" width="80" alt="" class="responsive" /></a></div>';
      endif;
      
      $retHtml.='<li><a href="'.get_permalink().'">';
      $retHtml.= $thumb;
      $retHtml.='<time datetime="'.get_the_time('Y-m-d').'">'.get_post_time( get_option( 'date_format' )).'</time>';
      $retHtml.='<span class="ttl">'.the_title("","",false).'</span>';
      $retHtml.='</a></li>';
    endforeach;
    $retHtml.='</ul>';
    $retHtml.='<a class="more" href="'.$catlink.'">お知らせ一覧へ</a>';
    wp_reset_postdata();
  }else{
    $retHtml='<p class="none">投稿がありません。</p>';
  }
return $retHtml;
}
add_shortcode("news", "getNewsItems");