CI框架无限级分类+递归的实现代码

//无级分类+递归public function digui(){$crr = $this->db->get('category')->result_array();$list['type'] = $this->nolimit($crr,0,0);$this->load->view('list1',$list);}public function nolimit($crr,$p_id,$level){static $arr = array();foreach($crr as $v){if($v['parent_id']==$p_id){$v['level'] = $level;$arr[] = $v;$this->nolimit($crr,$v['cat_id'],$level+1);}}return $arr;}<td><?PHP echo str_repeat('    ',$val['level'])?><?php echo $val['cat_name']?></td>//获取1级、2级、3级分类public function sel_child($p_id){$arr = $this->sel_son($p_id);foreach($arr as $k=>$v){$tmp = $this->sel_son($v['cat_id']);foreach($tmp as $kk=>$vv){$tmp2 = $this->sel_son($vv['cat_id']);$tmp[$kk]['childs'] = $tmp2;}$arr[$k]['child'] = $tmp;}return $arr;}//通过ID获取所有的下级分类public function sel_son($id){$this->db->where("parent_id=$id");return $this->db->get(self::$cate)->result_array();}//渲染展示主页模板public function lists(){$p_id = 0;$brr['type'] = $this->Home_model->sel_child($p_id);$brr['list'] = $this->db->get('goods')->result_array();$this->load->view('Home/list.html',$brr);}<?php foreach($type as $v){?><li id="cat_1" class=""><h3><a href=""><?php echo $v['cat_name']?></a></h3><?php foreach($v['child'] as $vv){?><dl class="clearfix"><dt><a href=""><?php echo $vv['cat_name']?></a></dt><?php foreach($vv['childs'] as $vvv){?><a href=""><?php echo $vvv['cat_name']?></a><?php }?></dl><?php }?></li><?php }?>