tp3.2 引用赋值

public function index(){
        
        $user = D("User");
        //整理用户查询数据
        $keyword = $_POST["keyword"];
        $ftype = $_POST["ftype"];
        if(!empty($keyword)&&!empty($ftype)){
            $where[$ftype] = array("like","%".$keyword."%");
             $_SESSION["keyword"] = $where;
         }else{
             if(empty($keyword)&&!empty($ftype)){
                 unset($_SESSION["keyword"]);
             }else{
                 $where = $_SESSION["keyword"];
             }
         }
        ///数据分页
        $count = $user->where($where)->count();     
        $page = new Page($count,4);
        $page->rollPage = 7;// 分页栏每页显示的页数
        $page->lastSuffix = false;
        //$page->setConfig("header", "共 %TOTAL_ROW% 条记录");
        ///15页 以上 它才出现首页
        $page->setConfig("first", "首页");
        $page->setConfig("prev", "上一页");
        $page->setConfig("next", "下一页");
        $page->setConfig("last", "尾页");
        $page->setConfig("theme", "%FIRST% %UP_PAGE% %LINK_PAGE% %DOWN_PAGE% %END%  共%TOTAL_ROW% 条数据  共%TOTAL_PAGE%页");
        $show = $page->show();
        $this->assign("show",$show);
        ////根据分页信息提取数据
        $list = $user->order("id")->where($where)->limit($page->firstRow,$page->listRows)->select();
        ///取得所有分组
        $role = M("Role");
        $rlist = $role->getField("id,name");
        ////循环遍历用户
        ///神奇的 引用赋值 屌屌屌
        foreach($list as &$user){
            $roleuser = D("RoleUser");
            $data = $roleuser->where("user_id=".$user["id"])->find();
         ///////把分组名称提取存入用户数据
            $user["group"] =$rlist[ $data["role_id"]];
        }
        $this->assign("ulist",$list);
        
        $this->display();
    }