传多个id 存入一个容器里，让另一个页面接受并显示数据

要传页面的id：

　　<ul class="contrast-ul">
　　
<!-- <li>id都在这里面</li> -->
    </ul>    </div>
    <div class="contrast-act clearfix"> <a href="javascript:;" rel="external nofollow"  rel="external nofollow"  target="_self" class="go-contrasts fl">开始对比</a> <a href="javascript:;" rel="external nofollow"  rel="external nofollow"  class="go-reset fr">清空</a> </div>
    <script>
     $('.go-contrasts').click(function(){
         var dbli = $('.contrast-ul').find('li');//收集所有<li>里面的 id
        var t_Str = '';
        $.each(dbli,function(index,ele){
            t_Str = t_Str + '_' + $(ele).attr("data-platid");  //以 _ 分隔
        })
        t_Str=t_Str.substr(1,t_Str.length-1);
         var url = "{:U('Index/data_duibi')}" + '/data/' + t_Str;
        location.href = url;
     });        //30_29_29 join
    </script>

参考图片：

接受 id 页面的参考图：

data_duibi页面 的控制器里方法

    public function data_duibi(){
        $data = explode('_', I('get.data'));
        $grade = $this->grade_model->where(array('id'=>array('in',$data)))->select();
        $this->assign('grade',$grade);        foreach($grade as $k=>$r){
            $tmp = $this->archives_model->where(array('delete'=>0,'id'=>$r['aid']))->find();
            $archives[] = $grade[$k]['archives'] = $tmp;        }
        $this->assign('archives',$archives);
        $this->display(":data_duibi");
    }