Question

php递归问题：

public $arr = array();

public function get_child($id,$level){
foreach($this->arr as $value){
if($value['parentid'] == $id){
$value['level'] = $level;
$child[$value['id']] = $value;
}
}
return $child;
}

public function menu($id=0,$level=1){//默认从顶级菜单开始
$child = $this->get_child($id,$level);
if(is_array($child)){
foreach($child as $key=>$value){
$menu_arr[$value['id']] = $value;
$this->menu($value['id'],$level);
$level++;
}
}
return $menu_arr;
}
$this->menu($value['id'],$level);

这一句去掉的效果跟不去掉是一样的，但是期望的是实现递归
Array ( [1] => Array ( [id] => 1 [name] => 我的面板 [parentid] => 0 [level] => 1 ) [2] => Array ( [id] => 2 [name] => 站点配置 [parentid] => 0 [level] => 1 ) [3] => Array ( [id] => 3 [name] => 内容管理 [parentid] => 0 [level] => 1 ) [4] => Array ( [id] => 4 [name] => 管理员管理 [parentid] => 0 [level] => 1 ) [5] => Array ( [id] => 5 [name] => 会员管理 [parentid] => 0 [level] => 1 ) [6] => Array ( [id] => 6 [name] => 功能管理 [parentid] => 0 [level] => 1 ) )
这是结果，但是想用递归算法将其他记录也能存入$menu_arr数组中

Answer 1

不明白其他记录是什么记录，另：
foreach($child as $key=>$value){
$menu_arr[$value['id']] = $value;
//$this->menu($value['id'],$level);
$level++;
}
这好像已经放到$menu_arr里了。。。

Answer 2

什么问题都不说清楚

追问

就是递归没有起作用

追答

foreach($child as $key=>$value){
$menu_arr[$value['id']] = $value;
$this->menu($value['id'],$value['level']);
}