目录

```php $list=Db::name('wuxianji')->order('id asc')->select()->toArray(); $list= array_column($list, null, 'id'); $tree = array(); foreach ($list as $key => $value) { //循环所有以数据 键值是菜单列表ID if (isset($list[$value['pid']])) { //查看该数组是否有父类 $list[$value['pid']]['children'][] = &$list[$key]; //如果有父类 讲该数据存储到父类下 } else { $tree[] = &$list[$key]; //如果没有父类 直接存入数组中 } } $jsonData = json_encode($tree,JSON_UNESCAPED_UNICODE); echo $jsonData; ```