重组数组,实现数组里面套数组

重组数组,实现数组里面套数组

只是实现了两级菜单

//获取菜单的数组
    $a = $this->get_menu();
    foreach($a as $k=>$vo){
      if($vo['pid']==0){
        //填充父类内容
        $arr[$vo['cid']]['top'] =$vo ;
        //填充子类内容
        foreach($a as $k2=>$vo2){
          if($vo['cid']==$vo2['pid']){
            $arr[$vo['cid']]['arr'][$vo2['cid']]=$vo2;
          }
        }
      }
    }