catalog.php

<?php
include("inc/data.php");
include("inc/functions.php");

$pageTitle = 'Full Catalog';
$section = null;

if (isset($_GET["cat"])) {
  if ($_GET["cat"] == "books") {
    $pageTitle = 'Books';
    $section = 'books';
  } else if ($_GET["cat"] == "movies") {
    $pageTitle = 'Movies';
    $section = 'movies';
  } else if ($_GET["cat"] == "music") {
    $pageTitle = 'Music';
    $section = 'music';
  }
}
include("inc/header.php"); ?>

<div class="section catalog page">
  <div class="wrapper">
    
    <h1><?php 
      if ($section !=null) {
        echo "<a href='catalog.php'>Full Catalog</a> &gt; ";
      }
      echo $pageTitle ?></h1>
    
      <ul class="items">
        <?php
             $categories = array_category($catalog,$section);
              foreach ($categories as $id) {
                echo get_item_html($id,$catalog[$id]);
            }
            ?>
      </ul>
    
  </div><!--/.wrapper-->
  
</div>

<?php include("inc/footer.php"); ?>