递归参考
function get_cat($cid=0){//递归算法
$nav=M('nav');
$cat=$nav->where('pre_id='.$cid)->select();
foreach($cat as $key=>$val){
$cats=$this->get_cat($val['id']);
$cat[$key]['child']=$cats;
}
return $cat;
}
Array
(
[0] => Array
(
[id] => 4
[nav_name] => 研报
[pre_id] => 0
[pid] => 4
[child] => Array
(
[0] => Array
(
[id] => 5
[nav_name] => 宏观
[pre_id] => 4
[pid] => 17
[child] => Array
(
)
)
[1] => Array
(
[id] => 6
[nav_name] => 行业
[pre_id] => 4
[pid] => 18
[child] => Array
(
)
)
[2] => Array
(
[id] => 7
[nav_name] => 个股
[pre_id] => 4
[pid] => 19
[child] => Array
(
)
)
[3] => Array
(
[id] => 8
[nav_name] => 名家
[pre_id] => 4
[pid] => 20
[child] => Array
(
)
)
)
)
[1] => Array
(
[id] => 2
[nav_name] => 市场
[pre_id] => 0
[pid] => 2
[child] => Array
(
[0] => Array
(
[id] => 9
[nav_name] => 大盘
[pre_id] => 2
[pid] => 9
[child] => Array
(
)
)
[1] => Array
(
[id] => 10
[nav_name] => 主力
[pre_id] => 2
[pid] => 10
[child] => Array
(
)
)
[2] => Array
(
[id] => 11
[nav_name] => 基金
[pre_id] => 2
[pid] => 11
[child] => Array
(
)
)
[3] => Array
(
[id] => 12
[nav_name] => 策略
[pre_id] => 2
[pid] => 12
[child] => Array
(
)
)
)
)
[2] => Array
(
[id] => 3
[nav_name] => 理财
[pre_id] => 0
[pid] => 3
[child] => Array
(
[0] => Array
(
[id] => 13
[nav_name] => 银行
[pre_id] => 3
[pid] => 13
[child] => Array
(
)
)
[1] => Array
(
[id] => 14
[nav_name] => 债券
[pre_id] => 3
[pid] => 14
[child] => Array
(
)
)
[2] => Array
(
[id] => 15
[nav_name] => 保险
[pre_id] => 3
[pid] => 15
[child] => Array
(
)
)
[3] => Array
(
[id] => 16
[nav_name] => 信托
[pre_id] => 3
[pid] => 16
[child] => Array
(
)
)
)
)
[3] => Array
(
[id] => 1
[nav_name] => 全球
[pre_id] => 0
[pid] => 1
[child] => Array
(
[0] => Array
(
[id] => 17
[nav_name] => 美股
[pre_id] => 1
[pid] => 5
[child] => Array
(
)
)
[1] => Array
(
[id] => 18
[nav_name] => 外汇
[pre_id] => 1
[pid] => 6
[child] => Array
(
)
)
[2] => Array
(
[id] => 19
[nav_name] => 期货
[pre_id] => 1
[pid] => 7
[child] => Array
(
)
)
[3] => Array
(
[id] => 20
[nav_name] => 黄金
[pre_id] => 1
[pid] => 8
[child] => Array
(
)
)
)
)
)
