用递归得到栏目的数组

栏目组的信息结构如上表，pid表示父节点的id

static public function toLayer($cate,$name='child',$pid=0){
    $arr=array();
    foreach($cate as $v){
        if($v['pid']==$pid){
            $v[$name]=self::toLayer($cate,$name,$v['id']);
            $arr[]=$v;
        }
    }
    return $arr;
}

其中$cate为查询表得到的关联数组,得到的结果数组如下：

Array
(
 [0] => Array  (  [id] => 1  [name] => 常规管理  [pid] => 0  [module] =>  [action] =>  [parameter] =>  [quick] => 0  [status] => 1  [sort] => 1  [child] => Array  (  [0] => Array  (  [id] => 5  [name] => 栏目管理  [pid] => 1  [module] =>  [action] =>  [parameter] =>  [quick] => 0  [status] => 1  [sort] => 11  [child] => Array  (  [0] => Array  (  [id] => 8  [name] => 栏目管理  [pid] => 5  [module] => Category  [action] => index  [parameter] =>  [quick] => 0  [status] => 1  [sort] => 111  [child] => Array  (  )   )   )   )   [1] => Array  (  [id] => 6  [name] => 内容管理  [pid] => 1  [module] =>  [action] =>  [parameter] =>  [quick] => 0  [status] => 1  [sort] => 12  [child] => Array  (  )   )   [2] => Array  (  [id] => 7  [name] => 快捷面板  [pid] => 1  [module] =>  [action] =>  [parameter] =>  [quick] => 0  [status] => 1  [sort] => 13  [child] => Array  (  )   )   )   )   [1] => Array  (  [id] => 2  [name] => 模块管理  [pid] => 0  [module] =>  [action] =>  [parameter] =>  [quick] => 0  [status] => 1  [sort] => 2  [child] => Array  (  [0] => Array  (  [id] => 9  [name] => 内置模块  [pid] => 2  [module] =>  [action] =>  [parameter] =>  [quick] => 0  [status] => 1  [sort] => 21  [child] => Array  (  [0] => Array  (  [id] => 10  [name] => 自由块管理  [pid] => 9  [module] => Block  [action] => index  [parameter] =>  [quick] => 0  [status] => 1  [sort] => 211  [child] => Array  (  )   )   [1] => Array  (  [id] => 11  [name] => 广告管理  [pid] => 9  [module] => Abc  [action] => index  [parameter] =>  [quick] => 1  [status] => 1  [sort] => 212  [child] => Array  (  )   )   [2] => Array  (  [id] => 12  [name] => 专题管理  [pid] => 9  [module] => Special  [action] => index  [parameter] =>  [quick] => 0  [status] => 1  [sort] => 213  [child] => Array  (  )   )   [3] => Array  (  [id] => 13  [name] => 公告管理  [pid] => 9  [module] => Announce  [action] => index  [parameter] =>  [quick] => 1  [status] => 1  [sort] => 214  [child] => Array  (  )   )   [4] => Array  (  [id] => 14  [name] => 友情链接  [pid] => 9  [module] => Link  [action] => index  [parameter] =>  [quick] => 1  [status] => 1  [sort] => 215  [child] => Array  (  )   )   [5] => Array  (  [id] => 15  [name] => 留言本管理  [pid] => 9  [module] => Guestbook  [action] => index  [parameter] =>  [quick] => 1  [status] => 1  [sort] => 216  [child] => Array  (  )   )   [6] => Array  (  [id] => 16  [name] => 评论管理  [pid] => 9  [module] => Comment  [action] => index  [parameter] =>  [quick] => 1  [status] => 1  [sort] => 217  [child] => Array  (  )   )   )   )   [1] => Array  (  [id] => 44  [name] => 其他模块  [pid] => 2  [module] =>  [action] =>  [parameter] =>  [quick] => 0  [status] => 1  [sort] => 22  [child] => Array  (  )   )   )   )