しずかなインターネットのAPIを利用する

$api = 'API KEY';
$header = [
  'Content-Type: application/json',
  'Authorization: Bearer ' .$api
];
$param = [ //条件を絞り込む場合はパラメータを指定
  'sort' => 'created',
  'direction' => 'desc',
  'visibility' => 'ANYONE'
];

$ch = curl_init();
$options = [
  CURLOPT_URL             => 'https://sizu.me/api/v1/posts?' .http_build_query($param),
  //CURLOPT_URL             => 'https://sizu.me/api/v1/posts', ←パラメータを指定しない場合はこっち
  CURLOPT_RETURNTRANSFER  => true,
  CURLOPT_CUSTOMREQUEST   => 'GET',
  CURLOPT_HTTPHEADER      => $header
];
curl_setopt_array($ch, $options);
$res = json_decode(curl_exec($ch), true);
curl_close($ch);

var_dump($res);

<?php
  foreach($res['posts'] as $article):
    //var_dump($value);
    //date
    $t = $article['createdAt'];
    $date = new DateTime($t);
    $date->setTimeZone(new DateTimeZone('Asia/Tokyo'));

    //tags
    $tags = $article['tags'];
?>
  <article>
    <h2><a href="https://sizu.me/[account_name]/posts/<?php echo $article['slug']; ?>"><?php echo $article['title']; ?></a></h2>
    <div>
      <p><time datetime="<?php echo $date->format('Y-m-d'); ?>"><?php echo $date->format('Y-m-d'); ?></time></p>
    <?php if($tags): ?>
      <ul>
        <?php
          foreach($tags as $tag) {
            echo '<li>#' .$tag. '</li>';
          }
        ?>
      </ul>
    <?php endif; ?>
    </div>
  </article>
<?php
  endforeach;
?>