post_meta.php

<?php
class PostMeta {
  public function __construct() {
    $this->container = HtmlGenerator\HtmlTag::createElement('div')
      ->addClass('post-meta');

    $this->post_title = $this->container
      ->addElement('div')
      ->addClass('post-title')
      ->addClass('hidden');

    $this->post_date = $this->container
      ->addElement('div')
      ->addClass('post-date')
      ->addClass('hidden');

    $this->post_author = $this->container
      ->addElement('div')
      ->addClass('post-author')
      ->addClass('hidden');

    $this->post_authors = $this->container
       ->addElement('div')
       ->addClass('post-authors')
       ->addClass('hidden');

    $this->post_header_ad = $this->container
      ->addElement('div')
      ->addClass('post-header-ad')
      ->addClass('hidden');
  }

  public function title($title) {
    $this->post_title
      ->removeClass('hidden')
      ->text($title);
  }

  public function generate() {
    return $this->container;
  }
}