What is the best way to do ajax loading of friends' feeds?

Question

PHP

What is the best way to implement ajax upload? At the moment, the loop goes through all the id of friends, and for each id get_posts requests 5 posts (i.e. if I have 10 friends and each friend has 10 posts, it will display 5 * 10 = 50 posts) it needs to request a total 5 publications from all friends and brought them out, will you have to redo everything?

if($_GET['lang'] == 'ru' || $_GET['lang'] == '') {
    for ($i = 0; $i < count($id_friends); $i++) {
      /* Получить посты по автору */
      $args = array(
        'author' => $id_friends[$i],
//				'meta_key' => 'rating-key',
        'orderby' => 'post_date',
        'offset' => 0,
        'numberposts' => 5
//				'order' => 'DESC'
      );

      $context['posts'] = get_posts($args);
      $arr_length = $context['posts'];

//			var_dump($context['posts']);

      //		array_push($context['posts'], $array_posts);

      foreach ($context['posts'] as $author) {
        $author->views = get_post_meta($author->ID, 'viev');
        $author->views = $author->views[0];
        $author->post_content = get_post_meta($author->ID, 'anons_66'); // поле анонс записи
        $author->post_content = $author->post_content[0];

        $author->like = count($wpdb->get_results("SELECT * FROM `wp_ratings` WHERE `rating_postid` = {$author->ID}")); // кол-во лайков
        $author->rating = $author->like * 100 + (int)$author->views; // рейтинг поста
        $author->amount += $author->rating;

        $author->category = get_the_category($author->ID);

        $html .= '<li class="item">
                <div class="caption">
                  <a href="' . $author->guid . '?lang=ru&pages=1">' . $author->post_title . '</a>
                </div>
                <div class="introtext">'
          . $author->post_content .
          '</div>
                <div class="b-favorites">
                  <div class="icon"></div>
                  <span title="Количество пользователей, добавивших в избранное">' . $author->rating . '</span>
                </div>
                <div class="b-category">
                  Категория: ' . $author->category[0]->cat_name . '
                </div>
                <div class="b-views">
                  <div class="icon"></div>
                  <span title="Просмотры">' . $author->views . ' просмотра</span>
                </div>
                <div class="b-likes">
                  <div class="icon"></div>
                  <span title="Нравится">' . $author->like . '</span>
                </div>
                <div class="b-date">
                  Дата добавления: ' . $author->post_date . '
                </div>
                ';
      }
    }

Answer 1

я бы для начала проверял на isset($_GET['lang']).
Потом выберите все посты с сортировкой по дате, в ID автора возмите массив ID и через IN

Answer 2

А какие критерии отбора этих пяти публикаций?