Question

请放心，这可能只是一个简单的解决方法，但是我已经坚持了好几天。

我一直在获取未定义的变量。用户登录后将无法使用。我不确定我是在正确使用会话还是忘记代码。

panel.php

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Panel extends CI_Controller {
    public function index()
    {
        $this->load->view('login');
    }

  public function login(){
    $this->load->model('user_model');
    $username = $this->input->post('username');
    $password = strtoupper(sha1($this->input->post('password')));
    $user_id = $this->user_model->login($username, $password);
    if($user_id){
      $user_data = array(
                'user_id' => $user_id,
                'username' => $username,
                'logged_in' => true
            );
      $this->session->set_userdata($user_data);
      redirect('panel/home');
    } else {
      redirect('');
    }
  }
    public function home(){
        $this->load->view('welcome_message');
    }
}

welcome_message.php

<div id="container">
    <h1>Welcome to CodeIgniter!</h1>

    <div id="body">

        <p><?php echo $username; ?></p>

        <p>The page you are looking at is being generated dynamically by CodeIgniter.</p>

        <p>If you would like to edit this page you'll find it located at:</p>
        <code>application/views/welcome_message.php</code>

        <p>The corresponding controller for this page is found at:</p>
        <code>application/controllers/Welcome.php</code>

        <p>If you are exploring CodeIgniter for the very first time, you should start by reading the <a href="user_guide/">User Guide</a>.</p>
    </div>

    <p class="footer">Page rendered in <strong>{elapsed_time}</strong> seconds. <?php echo  (ENVIRONMENT === 'development') ?  'CodeIgniter Version <strong>' . CI_VERSION . '</strong>' : '' ?></p>
</div>

错误

A PHP Error was encountered

Severity: Notice

Message: Undefined variable: username

Filename: views/welcome_message.php

Line Number: 75

Backtrace:

File: C:\xampp\htdocs\application\views\welcome_message.php
Line: 75
Function: _error_handler

File: C:\xampp\htdocs\application\controllers\panel.php
Line: 29
Function: view

File: C:\xampp\htdocs\index.php
Line: 315
Function: require_once

这是我不断收到的错误

有关会话数据和CodeIgniter 3的问题

0 个答案: