递归

可直接复制

/*
 * 递归
 * */
public function digui($data,$level=1,$p_id=0){
    static $arr=[];
    foreach($data as $k=>$v){
        if($v['parent_id']==$p_id){
            $v['level']=$level;
            $arr[]=$v;
            $this->digui($data,$level+1,$v['cat_id']);
        }
    }
    return $arr;
}

 

图片