php - 按类别组织结果 Redux

Question

我正在尝试扩展我在这里提出的问题：Creating a multi-dimensional array from query

我已在类别表中添加了类别描述，但我无法弄清楚如何将其添加到下面的代码中并显示每个类别的每个类别描述。

这是我用来按类别显示项目的代码：

$itemcategories = array();
while ($row = mysqli_fetch_array($result))
{
    $head = $row['category'];
    $itemcategories[$head][] = array(
      'id' => $row['id'],
      'title' => $row['title'],
      'itemdesc' => $row['itemdesc'],
      'price' => $row['price'],
      'special' => $row['special']
  );
}

<?php foreach ($itemcategories as $head => $items) { ?>
    <h3><?php echo $head; ?></h3>
    <table class="chart">
<?php foreach ($items as $item) { ?>
    <tr><td><?php echo $item['itemdesc']; ?></td></tr>
<?php } ?>
    </table>
<?php } ?>

Answer 1

// to initial variable holder
$categories = $items = array();

// looping mysql result
while ($row = mysqli_fetch_array($result))
{
  // to get category name
  $head = $row['category'];

  // avoid excessive setting of $categories
  if (!isset($categories[$head]))
  {
    $categories[$head] = $row['descrption'];
  }

   // assign mysql result to $items
  $items[$head][] = $row;
}
// free mysql result
mysql_free_result($result);

// loop all $categories
foreach ($categories as $head=>$desc)
{
   // this is my example for printing HTML
   // you can use heredoc syntax
   // or stick to your existing format
   echo "<h3>{$head} - {$desc}</h3><table class="chart">";
   foreach ($items[$head] as $item)
   {
     // print item description
     echo "<tr><td>{$item['itemdesc']}</td></tr>";
   }
   echo "</table>";
}