php - laravelで配列をolに変換するにはどうすればよいですか

Question

現在、parent_id を持つ配列があり、やりたいことを達成するには再帰を使用する必要があると思います

array
  0 => 
    object(Menu)[56]
      public 'attributes' => 
        array
          'id' => string '1' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'home' (length=4)
          'menu_url' => string 'test' (length=4)
          'parent_id' => string '0' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'original' => 
        array
          'id' => string '1' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'home' (length=4)
          'menu_url' => string 'test' (length=4)
          'parent_id' => string '0' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'relationships' => 
        array
          empty
      public 'exists' => boolean true
      public 'includes' => 
        array
          empty
  1 => 
    object(Menu)[60]
      public 'attributes' => 
        array
          'id' => string '2' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'Contact Us' (length=10)
          'menu_url' => string 'contact' (length=7)
          'parent_id' => string '1' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'original' => 
        array
          'id' => string '2' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'Contact Us' (length=10)
          'menu_url' => string 'contact' (length=7)
          'parent_id' => string '1' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'relationships' => 
        array
          empty
      public 'exists' => boolean true
      public 'includes' => 
        array
          empty
  2 => 
    object(Menu)[61]
      public 'attributes' => 
        array
          'id' => string '3' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'Privacy Docs' (length=12)
          'menu_url' => string 'privacy' (length=7)
          'parent_id' => string '1' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'original' => 
        array
          'id' => string '3' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'Privacy Docs' (length=12)
          'menu_url' => string 'privacy' (length=7)
          'parent_id' => string '1' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'relationships' => 
        array
          empty
      public 'exists' => boolean true
      public 'includes' => 
        array
          empty

array
  0 => 
    object(Menu)[56]
      public 'attributes' => 
        array
          'id' => string '1' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'home' (length=4)
          'menu_url' => string 'test' (length=4)
          'parent_id' => string '0' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'original' => 
        array
          'id' => string '1' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'home' (length=4)
          'menu_url' => string 'test' (length=4)
          'parent_id' => string '0' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'relationships' => 
        array
          empty
      public 'exists' => boolean true
      public 'includes' => 
        array
          empty
  1 => 
    object(Menu)[60]
      public 'attributes' => 
        array
          'id' => string '2' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'Contact Us' (length=10)
          'menu_url' => string 'contact' (length=7)
          'parent_id' => string '1' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'original' => 
        array
          'id' => string '2' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'Contact Us' (length=10)
          'menu_url' => string 'contact' (length=7)
          'parent_id' => string '1' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'relationships' => 
        array
          empty
      public 'exists' => boolean true
      public 'includes' => 
        array
          empty
  2 => 
    object(Menu)[61]
      public 'attributes' => 
        array
          'id' => string '3' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'Privacy Docs' (length=12)
          'menu_url' => string 'privacy' (length=7)
          'parent_id' => string '1' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'original' => 
        array
          'id' => string '3' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'Privacy Docs' (length=12)
          'menu_url' => string 'privacy' (length=7)
          'parent_id' => string '1' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'relationships' => 
        array
          empty
      public 'exists' => boolean true
      public 'includes' => 
        array
          empty

array
  0 => 
    object(Menu)[56]
      public 'attributes' => 
        array
          'id' => string '1' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'home' (length=4)
          'menu_url' => string 'test' (length=4)
          'parent_id' => string '0' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'original' => 
        array
          'id' => string '1' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'home' (length=4)
          'menu_url' => string 'test' (length=4)
          'parent_id' => string '0' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'relationships' => 
        array
          empty
      public 'exists' => boolean true
      public 'includes' => 
        array
          empty
  1 => 
    object(Menu)[60]
      public 'attributes' => 
        array
          'id' => string '2' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'Contact Us' (length=10)
          'menu_url' => string 'contact' (length=7)
          'parent_id' => string '1' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'original' => 
        array
          'id' => string '2' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'Contact Us' (length=10)
          'menu_url' => string 'contact' (length=7)
          'parent_id' => string '1' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'relationships' => 
        array
          empty
      public 'exists' => boolean true
      public 'includes' => 
        array
          empty
  2 => 
    object(Menu)[61]
      public 'attributes' => 
        array
          'id' => string '3' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'Privacy Docs' (length=12)
          'menu_url' => string 'privacy' (length=7)
          'parent_id' => string '1' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'original' => 
        array
          'id' => string '3' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'Privacy Docs' (length=12)
          'menu_url' => string 'privacy' (length=7)
          'parent_id' => string '1' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'relationships' => 
        array
          empty
      public 'exists' => boolean true
      public 'includes' => 
        array
          empty

array
  0 => 
    object(Menu)[56]
      public 'attributes' => 
        array
          'id' => string '1' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'home' (length=4)
          'menu_url' => string 'test' (length=4)
          'parent_id' => string '0' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'original' => 
        array
          'id' => string '1' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'home' (length=4)
          'menu_url' => string 'test' (length=4)
          'parent_id' => string '0' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'relationships' => 
        array
          empty
      public 'exists' => boolean true
      public 'includes' => 
        array
          empty
  1 => 
    object(Menu)[60]
      public 'attributes' => 
        array
          'id' => string '2' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'Contact Us' (length=10)
          'menu_url' => string 'contact' (length=7)
          'parent_id' => string '1' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'original' => 
        array
          'id' => string '2' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'Contact Us' (length=10)
          'menu_url' => string 'contact' (length=7)
          'parent_id' => string '1' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'relationships' => 
        array
          empty
      public 'exists' => boolean true
      public 'includes' => 
        array
          empty
  2 => 
    object(Menu)[61]
      public 'attributes' => 
        array
          'id' => string '3' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'Privacy Docs' (length=12)
          'menu_url' => string 'privacy' (length=7)
          'parent_id' => string '1' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'original' => 
        array
          'id' => string '3' (length=1)
          'menu_id' => string '1' (length=1)
          'menu_name' => string 'Privacy Docs' (length=12)
          'menu_url' => string 'privacy' (length=7)
          'parent_id' => string '1' (length=1)
          'position' => string '0' (length=1)
          'group_id' => string '1' (length=1)
          'menu_items' => null
      public 'relationships' => 
        array
          empty
      public 'exists' => boolean true
      public 'includes' => 
        array
          empty

現在、menuHelperというクラスに関数があります

public static function make(array $array, $no = 0) {
        var_dump($array);
        $child = self::hasChildren($array, $no);
        if (empty($child))
            return "";
        $content = "<li>\n";
        foreach ($child as $value) {
            $content = sprintf("\t<li><div>%s</div>" . self::make($array, $value->id) . "</li>\n", $value->menu_name);
            //$content .= self::make($array, $value->id);
        }
        $content .= "</li>\n";
        //return $content;
        return($content == '' ? '' : "<ol>" . $content . "</ol>");
    }
public static function hasChildren($array, $id) {
        return array_filter($array, function ($var) use($id) {
                    return $var->parent_id == $id;
                });
    }

これを出力してほしい

<ol class="sortable">
    <li>
        <div>parent</div>
        <ol>
            <div>Sub</div>
            <ol>
                <div>Sub 2</div>
            </ol>
        </ol>
    </li>
    <li>
        <div>parent 2</div>
        <ol>
            <div>Sub</div>
            <ol>
                <div>Sub 2</div>
            </ol>
        </ol>
    </li>
</ol>

しかし、それは親を出力し続けるのではなく、1 つの親とその子を出力します。その後、別の親がいても出力を終了するので、何か問題があると思いますか?