?? ??

?? ??? ?????:

?? ?? ??? ??? ???? ?? ???? ?? ?? ?? ???? ?? ?? ??? ??? ?? Windows? ? ??? ??? ? ?? ??? ? ??? ??? ??? ?? ? ?? ?? ??? ?????.

public function index(){
        $cate=D('cate');
        $cateres=$cate->catetree();
        $this->assign('cateres',$cateres);
        $this->display();
    }

?? ??? ????? ???? ???? $cateres? catetree() ???? ?????.

catetree() ???? ?? ?? ???? ??? ?? ???? ????.

<?php
namespace Admin\Model;
use Think\Model;
class CateModel extends Model {

    protected $_validate = array(
      array('catename','require','管理員名稱不得為空！',1),
    );


    public function catetree(){
        $data=$this->order('id desc')->select();
        return $this->resort($data);
    }

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

}

?? ???? ??? ??? ???????.

catetree ???

? ???? ?????. $this? ??? ???? ???? ID? ???? ???? ?? ?????. return? ?? ??? ?????.

resort method
$data: ??? ???

$pid=0: ??? ???? 0?? ??

$level=0 ?? ??

?? ??? ???? ? ??? ????. ???? ???? ?? foreach? ???? $v['pid']==$pid? ??? ID? ???? ?? $v['level']=$level? ??? ???? ??? ???? ??? ?????. ???? $this->resort($data,$v['id'],$level+1); ??? $data? $data $v['? ????. id']? $pid? ????. $level+1 $level? ?? 1? ???? ?????. ??? ??? ??? ????.

???? ? ??? ???? ???? ????

??? ??? ?? ??? ??? ?????.