无限极分类

1.调用方法 [python] 

function __construct(){  
        parent::__construct();  
  
    }  

public function aaaa(){  
    $arr=$this->db->get("表名")->result_array();  
    $list['list']=$this->sel_dg($arr,$pid=0,$level=0);  
    $this->load->view("good/aaa",$list);  
}  

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

<?php echo str_repeat('      ',$v['level']);?>  
  
<?php echo $v['cat_name']?>