Php Codeigniter：类别和子类别

我正在尝试为餐厅菜单创建类别和子类别

子类别具有其他字段，如“价格”、“说明”，类别仅具有id和名称。所以我决定选择那两张桌子

Categories    -> ID, NAME
Subcategoires -> ID, NAME, DESCRIPTION, PRICE, CATEGORIES_ID,

现在我正试图将它们组织起来，制作出一个好看的菜单

我还将DataMapper用于Codeigniter

到目前为止，我有：

$categories = new Category_model();
$subcategories = new Subcategory_model();
$categories->get();
$subcategories->get();

$recent_categories = array();
$recent_subcategories = array();

foreach ($categories as $category)
{
    $single_category = array
    (
        'category_id' => $category->id,
        'category_name' => $category->name,
    );

    foreach ($subcategories as $subcategory)
    {
        if ($subcategory->categories_id == $category->id)
        {
            $single_subcategory = array
            (
                'subcategory_id' => $subcategory->id,
                'subcategory_name' => $subcategory->name,
                'subcategory_description' => $subcategory->description,
                'subcategory_price' => $subcategory->price,
            );
        }
    }

    array_push($recent_categories, $single_category);
    array_push($recent_subcategories, $single_subcategory);
}

这几乎是一个小问题，它是打印两个类别的两个子类别。每个人只需要一个

现在看起来是这样的：

ALCOHOL
    - VODKA
    - COLA
NON-ALCOHOL
    - VODKA
    - COLA

很明显，我想要的是伏特加酒和可乐

---

有人能告诉我怎么做吗？谢谢。

也许您应该立即填充数组

假设您的内容是这样的

    $categories = array("alcohol", "non-alcohol");
    $subcategories = array(
                     (object)array("category" => "alcohol", "name" => "vodka"),
                     (object)array("category" => "non-alcohol", "name" => "cola")
                   );

    foreach ($categories as $category)
    {
        $recent_categories[] = $category;

        foreach ($subcategories as $subcategory => $subcat)
        {               
            $recent_subcategories[$subcat->name][] = $subcat->name;
        }
    }

这将导致：

array(2) {
  [0]=>
  string(7) "alcohol"
  [1]=>
  string(11) "non-alcohol"
}

array(2) {
  ["alcohol"]=>
  string(5) "vodka"
  ["non-alcohol"]=>
  string(4) "cola"
}

最糟糕的是

排列 “类别”=>阵列子类别

---

如果我看到同一类别的多个产品，但我希望信息在数据库中，而不是硬编码，则这将覆盖同一类别的最后产品名称

$categories = array("alcohol", "non-alcohol");
$subcategories = array(
                 (object)array("category" => "alcohol", "name" => "vodka"),
                 (object)array("category" => "non-alcohol", "name" => "cola")
               );
$recent_subcategories = array();
foreach ($categories as $category)
{
    $recent_categories[] = $category;

    foreach ($subcategories as $subcategory => $subcat)
    {               
        $recent_subcategories[$subcat->name][] = $subcat->name;
    }
}