小编mol*_*bal的帖子

我做了一个视图，显示一个帖子和对该帖子的回复。对于这个问题，回复是在 foreach 循环中并按随机顺序进行的。有没有办法对 foreach 循环进行排序，以便最早的回复位于顶部？最旧的回复在底部？。

这是循环

 @foreach($topic->replies as $reply)
         <div class="collection">
            <div class="collection-item row">
               <div class="col s3">
                  <div href="" class="avatar collection-link">
                     <div class="row">
                        <div class="col s3"><img src="/uploads/avatars/{{ $reply->user->avatar }}" alt="" class="circle" style="width: 50px;"></div>
                           <div class="col s9">
                              <p class="user-name">{{ $reply->user->username }}</p>
                           </div>
                        </div>
                              <p>Role: {{ $reply->user->role->role_name }}</p>
                              <p>Since: {{ $reply->user->created_at }}</p>
                              <p class="post-timestamp">Posted on: {{ $reply->created_at }}</p>
                     </div>
                   </div>
                   <div class="col s9">
                      <div class="row last-row">
                        <div class="col s12">
                           <p>{!! $reply->reply_text !!}</p>
                        </div>
                      </div>
                      <div class="row last-row block-timestamp">
                        <div class="col s6">
                           <p …

我正在使用Codeigniter登录系统.我没有错误,但它不起作用.

这是我的表格:

<div class="row">
<div class="col-md-4 offset-md-4 bg-primary">
    <?php echo validation_errors() ?>
    <?php echo form_open('admin') ?>
    <h3 class="text-center"><?php echo $title ?></h3><hr>
    <div class="form-group">
        <label>UserName:</label>
        <input type="text" name="username" class="form-control" placeholder="username">
    </div>
    <div class="form-group">
        <label>Password:</label>
        <input type="password" name="password" class="form-control" placeholder=" password">
    </div>
    <div class="form-group">
        <input type="submit" name="submit" class="form-control btn btn-success" value="Log in">
    </div>
    <?php echo form_close() ?>
</div>

控制器:

class admin extends CI_Controller{
//login
public function index(){
    $data['title'] = 'Login';
    $this->form_validation->set_rules('username','Username','required');
    $this->form_validation->set_rules('password','Password','required');

    if($this->form_validation->run() === false ){
        $this->load->view('admin/header',$data);
        $this->load->view('admin/login_form',$data);
        $this->load->view('admin/footer');
    }
    else{
        $this->load->model('admin_model'); …