二维数组循环将用户信息插入到数据库

foreach($_POST['et_name'] as $k1=>$vo1){
    foreach($_POST['et_idcade'] as $k2=>$vo2){
        if($k1==$k2){
            $arr[$k1]['name'] = $vo1;
            $arr[$k1]['idcade'] = $vo2;
        }
    }
} 
foreach($arr as $k=>$vo){
$et[$k]['type'] = 1;
$et[$k]['hdid'] = $lxr['hdid'];
$et[$k]['pid'] = $lxr['pid'];
$et[$k]['name'] = $vo['name'];
$et[$k]['idcade'] = $vo['idcade'];
$et[$k] = $this->model->table('hdbminfo')->data($et[$k])->insert(); 
}