HeartOfProgrammer

$news = $_GET['id'];
  $mysqli = mysqli_connect('localhost', 'weltkind', '123321', 'wl_db');
  $sql = "SELECT 
    n.id AS news_id, 
    n.title AS title, 
    n.content AS content, 
    u.id AS user_id 
    FROM news n
    LEFT JOIN users u
    ON n.user_id = u.id
   WHERE n.id = $news LIMIT 1
  ";

  $query = mysqli_query($mysqli, $sql);
$row = array();
$row = mysqli_fetch_assoc($query);
    echo '<div>';
    echo '<h1><a href="news.php?id='.$row['news_id'].'">'.$row['title'].'</a></h1>';
    echo '<p>'.$row['content'].'</p>';
    echo '</div>';

$i = 0;
while ($row = mysqli_fetch_assoc($result)) {
          echo '<div class="item_news">';
          echo '<h1><a href="news.php?id='.$row[$i]['id'].'">'.$row[$i]['title'].'</a></h1>';
          echo '<p class="content">'.$row[$i]['content'].'</p>';
          echo '<p class="add_date">'.$row[$i]['add_date'].'</p>';
          echo '<p class="user_id">'.$row[$i]['user_id'].'</p>';
          echo '</div>';
$i++;
        }

$result_two = mysql_query(" SELECT * FROM img where order by id ");

<div class="container"
  <div class="block-news">
  <?
    $result = mysql_query(" SELECT * FROM news ORDER BY id DESC");

    mysql_close();
 		while($row = mysql_fetch_assoc($result)): ?>
     <div class='item_news' style='margin-bottom: 15px;'>
      <h1><?= $row['title']?></h1>
      <p class="text"><?= $row['text']?><p>
      <p class="date">Дата публикации: <?= $row['date']?></p>
      <p class="time">Время публикации: <?= $row['time']?></p>
      <p class="author">Автор: <?= $row['author']?>
    </div>
    <?php endwhile
 	?>
 		</div>
 	</div>