Question

thinkphp 怎么实现循环取二级菜单

Answer 1

　　ThinkPHP实现二级循环读取的方法如下:
　　$Category = D('Category')->where('category_pid=0')->findAll();
　　//dump($Category);
　　if(!empty($Category)){ //判断一级是否为空
　　foreach($Category as $key=>$value){ //循环读取
　　$pid = $value['category_id'];//字段赋值
　　$Category[$key]['child'] = D('Category')->where("category_pid =$pid")->select();
　　//echo D('Category')->getLastSql(); //打印sql语句的写法
　　}
　　}
　　//dump($Category);
　　$this->assign('Category',$Category);//映射值