ci登陆

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

class Login extends CI_Controller
{
    public $users = [
        'admin' => '123456',
        'user' => '123'
    ];

    public function __construct()
    {
        parent::__construct();
    }
    
    // 登陆
    public function index()
    {
        $cookie_login = get_cookie('cookie_login');
        $login_name = get_cookie('login_name');
        if ($this->session->userdata('admin')) {
            redirect('/recentimgtext');
        }
        if ($cookie_login == md5('maoriaty')) {
            $this->session->set_userdata('admin', ['username' => $login_name]);
            redirect('/recentimgtext');
        }

        $message = '';

        if (IS_POST) {
            $username = $this->input->post('username');
            $password = $this->input->post('password');
            $remember = $this->input->post('remember');
            foreach ($this->users as $k => $user) {
                if ($k == strtolower($username) && $user == $password) {
                    $cookie_login = md5('maoriaty');
                    if($remember == '1') {
                        set_cookie('cookie_login', $cookie_login, 3600*24);
                        set_cookie('login_name', $username, 3600*24);
                    }
                    $this->session->set_userdata('admin', ['username' => $username]);
                    redirect('/recentimgtext');
                } else {
                    $message = '用户名或密码错误';
                }
            }
        }
        $this->load->view('login', ['message' => $message]);
    }

    // 退出登陆
    public function logout()
    {
        $this->session->unset_userdata('admin');
        delete_cookie('cookie_login');
        delete_cookie('login_name');
        redirect('/login');
    }
}

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <link rel="stylesheet" href="/resources/static/bootstrap.min.css">
    <link rel="stylesheet" href="/resources/static/layout.css">
    <script src="/resources/static/jquery.3.3.1.js"></script>
    <title>登陆</title>
    <style>
    .wrap {
         500px;
        margin: 0 auto;
        background-color: #eee;
        padding: 40px;
        border-radius: 10px;
    }
    </style>
</head>
<body>
<div class="wrap">
<form method="post">
    <h3 class="title my-4">用户登陆</h3>
  <div class="form-group">
    <input type="text" class="form-control" name="username" id="username" aria-describedby="emailHelp" placeholder="请输入用户名">
  </div>
  <div class="form-group">
    <input type="password" class="form-control" name="password" id="password" placeholder="请输入密码">
  </div>
  <div class="form-group form-check">
    <input type="checkbox" name="remember" checked value="1" class="form-check-input" id="exampleCheck1">
    <label class="form-check-label" for="exampleCheck1">记住我</label>
  </div>
  <?=$message?>
  <button type="submit" class="btn btn-lg btn-block btn-primary">登陆</button>
</form>
</div>
</body>
</html>

common_helper.php-helpers

// 登陆控制
function check_login($session)
{
    $data = $session->userdata('admin');
    $cookie_login = get_cookie('cookie_login');
    $login_name = get_cookie('login_name');
    if (empty($data)) {
        if ($cookie_login == md5('maoriaty')) {
            $session->set_userdata('admin', ['username' => $login_name]);
            redirect('/recentimgtext');
        }
        redirect('/login');
    }
}

登陆方法控制，如：

    // 修改图文
    public function modimgtext()
    {
        check_login($this->session);

        $imgtextid = $this->input->get('imgtextid');
        $template = $this->db->get($this->recent_bg_table)->result_array();
        $musiclist = $this->db->get($this->recent_music_table)->result_array();

        $data = $this->db->get_where($this->recent_imgtext_table, ['imgtextid' => $imgtextid])->row_array();

        if (IS_POST) {
            $imgtextid = $this->input->post('imgtextid');
            $data = [
                'title' => $this->input->post('title'),
                'cover' => $this->input->post('o_cover'),
                'username' => $this->input->post('username'),
                'bgid' => $this->input->post('bgid'),
                'musicid' => $this->input->post('musicid'),
                'ishot' => $this->input->post('ishot'),
                'content' => htmlspecialchars($this->input->post('content')),
                'title_color' => $this->input->post('title_color'),
            ];
            $file = 'cover';
            $save_path = 'upload/imgtext/cover';
            if ($_FILES[$file]['error'] == 0) {
                $res = $this->uploadimg($file, $save_path);
                if ($res['errcode'] == 0) {
                    $data['cover'] = $res['url'];
                }
            }
            $this->db->update($this->recent_imgtext_table, $data, ['imgtextid' => $imgtextid]);
            redirect('/recentimgtext/index');
        }
        $data['content'] = str_replace("'",""", $data['content']);

        $this->load->view('recentimgtext/addimgtext', ['data' => $data, 'template' => $template, 'musiclist' => $musiclist, 'title' => '修改图文']);
    }

修改配置：config.php

$config['sess_save_path'] = BASEPATH.'../'.'session_file';

自动加载：autoload.php

$autoload['libraries'] = array('session');

$autoload['helper'] = array('common', 'url', 'cookie');