laravel简单的搜索分页

function page(Request request)  
        {  
            //默认的搜索框为post传值  
            if ($request) { //默认的搜索框为post传值 if ($request->isMethod(‘post’)) {
//获取填写的内容
contents=$contents =$request->contents;
//得到数据库中的数据
db=Weibo::all();//定义一个数组，用来保存拼接的语句$db = Weibo::all(); //定义一个数组，用来保存拼接的语句$arr = array();
//拼接原生的sql语句，1为true`
where=1;//判断输入的内容是否存在，用来搜索if(!empty($where = 1; //判断输入的内容是否存在，用来搜索 if (!empty($contents)) {
//拼接原生的sql查询条件 使用模糊查询
where.="andcontentlike"$where .= " and content like " %".$contents. “%”“;
//拼接多条件查询
arr[′content′]="contentlike"$arr ["content"] = "content like " %" .$contents . “%”“;
}
//菜单的请求值
isgai=$is_gai =$request->is_gai;
// dd(isgai);//菜单的值不为空if($is_gai); //菜单的值不为空 if ($is_gai == 1 || $is_gai == 0) {

                // +   拼接  菜单 查询语句
                $where .= " and is_show =" . $is_gai;
                //拼接  菜单  查询条件
                $arr ["is_show"] = $is_gai;

            }
            $db = Weibo::whereRaw($where)->join("user_infos", "user_infos.user_id", "=", "weibos.user_id")
                ->select("weibos.*", "user_infos.nickname");
            $weibos = $db->paginate(2);
            //appends把条件追加到URL里面
            $weibos = $weibos->appends($arr);
            return view("admin/weibo", ["weibos" => $weibos]);
        }
        /***get的传递方式用来分页查询点击下一页***/
        $arr = array();
        $where = 1;
        //get的接收方式
        if (!empty($_GET["content"])) {

            $where .= " and " . $_GET["content"];
            $arr ["content"] = $_GET["content"];
        }
        $is_gai = $request->is_gai;
        $show = $_GET["is_show"];
        if ($show == 1 || $show == 0) {

            $where .= " and is_show =" . $show;
            $arr ["is_show"] = $show;

        }
        //原生sql拼接语句
        $db = Weibo::whereRaw($where)->join("user_infos", "user_infos.user_id", "=", "weibos.user_id")
            ->select("weibos.*", "user_infos.nickname");
        //分页
        $weibos = $db->paginate(2);
        //appends把条件追加到URL里面
        $weibos = $weibos->appends($arr);

        return view("admin/weibo", ["weibos" => $weibos]);
    }