测试数据如下图所示：

查询出的数据直接调用此方法：

    function getTreeTest($data, $pId=0,$level=0)
    {
        $tree = '';
        foreach($data as $k => $v)
        {
            if($v['parent_id'] == $pId)
            {
                //父亲找儿子
                $v['level'] = $level;
                $v['children'] = $this->getTreeTest($data, $v['id'],$level+1);
                $tree[] = $v;
            }
        }
        return $tree;
    }

得到数据如下：

Array
(
    [0] => Array
        (
            [id] => 174
            [parent_id] => 0
            [type] => 2
            [status] => 1
            [list_order] => 10000
            [app] => Admin
            [controller] => Index
            [action] => default
            [param] => 
            [name] => 权限管理
            [icon] => 
            [remark] => 
            [ttttttt] => 
            [level] => 0
            [children] => Array
                (
                    [0] => Array
                        (
                            [id] => 175
                            [parent_id] => 174
                            [type] => 1
                            [status] => 1
                            [list_order] => 10000
                            [app] => Admin
                            [controller] => Rbac
                            [action] => index
                            [param] => 
                            [name] => 角色管理
                            [icon] => 
                            [remark] => 
                            [ttttttt] => 
                            [level] => 1
                            [children] => 
                        )

                    [1] => Array
                        (
                            [id] => 176
                            [parent_id] => 174
                            [type] => 1
                            [status] => 1
                            [list_order] => 10000
                            [app] => admin
                            [controller] => Menu
                            [action] => index
                            [param] => 
                            [name] => 菜单管理
                            [icon] => 
                            [remark] => 
                            [ttttttt] => 
                            [level] => 1
                            [children] => 
                        )

                    [2] => Array
                        (
                            [id] => 179
                            [parent_id] => 174
                            [type] => 1
                            [status] => 1
                            [list_order] => 10000
                            [app] => admin
                            [controller] => User
                            [action] => index
                            [param] => 
                            [name] => 用户管理
                            [icon] => 
                            [remark] => 
                            [ttttttt] => 
                            [level] => 1
                            [children] => 
                        )

                )

        )

    [1] => Array
        (
            [id] => 182
            [parent_id] => 0
            [type] => 1
            [status] => 1
            [list_order] => 10000
            [app] => Admin
            [controller] => Comment
            [action] => index
            [param] => 
            [name] => 编辑
            [icon] => 
            [remark] => 
            [ttttttt] => 
            [level] => 0
            [children] => Array
                (
                    [0] => Array
                        (
                            [id] => 183
                            [parent_id] => 182
                            [type] => 1
                            [status] => 1
                            [list_order] => 10000
                            [app] => Admin
                            [controller] => Comment
                            [action] => index
                            [param] => 
                            [name] => 编辑-01
                            [icon] => 
                            [remark] => 
                            [ttttttt] => 
                            [level] => 1
                            [children] => Array
                                (
                                    [0] => Array
                                        (
                                            [id] => 185
                                            [parent_id] => 183
                                            [type] => 1
                                            [status] => 1
                                            [list_order] => 10000
                                            [app] => Admin
                                            [controller] => Comment
                                            [action] => index
                                            [param] => 
                                            [name] => 编辑-01-01
                                            [icon] => 
                                            [remark] => 
                                            [ttttttt] => 2018-12-25 11:43:03
                                            [level] => 2
                                            [children] => 
                                        )

                                )

                        )

                )

        )