我使用codeigniter创建了一个登录页面,但是我收到了php消息。
Message: ini_set(): A session is active. You cannot change the session module's ini settings at this time
如何解决这个问题?
查看(login.php)
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Admin Login</title>
<link rel="stylesheet" href="../css/normalize.css">
<link rel="stylesheet" href="../css/admin-style.css">
</head>
<body>
<?php echo form_open('Verify_login', ['id'=>'loginForm', 'name'=>'loginForm', 'method'=>'post']) ?>
<div class="login">
<div class="log-box">
<h3>Login</h3>
<div >
<input id="username" name="username" placeholder="User Name" value="" type="text" >
<?php echo form_error('username'); ?>
<input id="Password" name="password" placeholder="Password" required type="password">
<?php echo form_error('password'); ?>
<div class="remember-me">
<input id="checkBox" type="checkbox">
<label for="checkBox">Remember Me</label>
</div>
<button class="login-button" name="loginButton">Login</button>
</div>
</div>
</div>
</form>
</body>
</html>
控制器(Verify_login.php)
<?php
defined('BASEPATH') OR exit('No direct script access aloowed');
class Verify_login extends CI_Controller
{
public function __construct()
{
parent::__construct();
$this->load->model('User');
$this->load->helper('url');
$this->load->helper('security');
$this->load->library('form_validation');
$this->load->library('session');
}
public function index()
{
$this->form_validation->set_rules('username', 'Username', 'trim|required');
$this->form_validation->set_rules('password', 'Password', 'trim|required|callback_check_database');
if ($this->form_validation->run() == FALSE) {
// if validation failed load the view
$this->load->view('admin/login');
}
else{
$this->check_database($username , $password);
redirect('dashboard', 'refresh');
}
}
public function check_database($password)
{
$username = $this->input->post('username');
//query tha database
$result = $this->User->login($username, $password);
if ($result) {
$sess_array = [];
foreach ($result as $row) {
$sess_array =
[
'id'=>$row->id,
'username'=>$row->name
];
$this->session->set_userdata('logged_in', $sess_array);
}
return TRUE;
}
else{
$this->form_validation->set_message('check_database','invalid username and password');
}
}
}
?>
控制器(admin.php的)
session_start(); //need to call PHP's session object to access it though it
class Admin extends CI_Controller
{
public $data;
public function __construct()
{
parent::__construct();
$this->load->helper('url');
$this->load->helper('form');
$this->load->helper('url');
$this->load->library('form_validation');
$this->load->helper('security');
//load user model
$this->load->model('User');
}
public function index()
{
// $this->load->view('admin/index');
if ($this->session->userdata('logged_in')) {
$session_data = $this->session->userdata('logged_in');
$data['username'] = $session_data['name'];
$this->load->view('admin/dashboard', $data);
}
else{
//if no session redirect to login page
redirect('admin', 'refresh');
// redirect('login');
}
}
public function logout()
{
$this->session->unset_userdata('logged_in');
session_destroy();
redirect('home', 'refresh');
}
型号(User.php)
<?php
/ ** *用户登录claass,扩展了MY_Model * * /
defined('BASEPATH') OR exit('no direct script allowed');
class User extends CI_Model
{
protected $table = 'users';
public function __construct()
{
$this->load->database();
}
public function login($username ,$password)
{
var_dump($username);
var_dump($password);
$this->db->select(['id', 'name', 'password']);
$this->db->from($this->table);
// $this->db->where('name', $username);
// $this->db->where('password', $password);
$this->db->limit(1);
$query = $this->db->get();
if ($query->num_rows() == 1) {
return $query->result();
}
else{
return false;
}
}
}
?>
答案 0 :(得分:9)
我认为你是框架概念和OOP的新手。
admin.php
中不需要此行session_start(); //need to call PHP's session object to access it though it
当您加载会话库时,它的构造函数会为您执行这些操作。
答案 1 :(得分:4)
该消息表示您已启动与session_start()
的会话,其中您正在使用ini_set()
代码进一步向下操作会话模块。如果您正在操作会话模块,则应在会话启动并激活之前完成。
答案 2 :(得分:2)
消息:ini_set():会话处于活动状态。您目前无法更改会话模块的ini设置
我之前有过相同的错误消息,默认情况下,Code-igniter会在我的情况下写入文件( C:\ xampp \ tmp )。但我想让它写入数据库。
在您的自动加载器中,您可能有类似这样的内容:
//:::::$autoload['libraries'] = array();
//'session', this mean start session ini_set()
$autoload['libraries'] = array('session', 'database');
默认情况下,config / config.php会话配置中的设置如下所示:
$config['sess_driver'] = 'files';
$config['sess_cookie_name'] = 'ci_session';
$config['sess_expiration'] = 7200;
$config['sess_save_path'] = NULL;
$config['sess_match_ip'] = FALSE;
$config['sess_time_to_update'] = 300;
$config['sess_regenerate_destroy'] = FALSE;
documentation声明要使用数据库而不是文件,首先应在应用程序数据库中创建一个表。
CREATE TABLE IF NOT EXISTS `ci_sessions` (
`id` varchar(128) NOT NULL,
`ip_address` varchar(45) NOT NULL,
`timestamp` int(10) unsigned DEFAULT 0 NOT NULL,
`data` blob NOT NULL,
KEY `ci_sessions_timestamp` (`timestamp`)
);
返回 config / config.php 并将$config['sess_driver'] = 'files';
更改为$config['sess_driver'] = 'database';
就像所以我认为一切都应该没问题,但我收到错误消息:ini_set():会话处于活动状态。您目前无法更改会话模块的ini设置
我的解决方案是首先运行session_destroy();
然后更改会话名称和表名
我的配置如下所示:
$config['sess_driver'] = 'database';
$config['sess_cookie_name'] = 'newname_session';
$config['sess_expiration'] = 72000;
$config['sess_save_path'] ='newname_sessions';
$config['sess_match_ip'] = TRUE;
$config['sess_time_to_update'] = 300;
$config['sess_regenerate_destroy'] = FALSE;
保存所有内容,刷新页面后全部清除,没有显示错误消息
答案 3 :(得分:1)
这真的对我有用
if (!isset($_SESSION)) {
// server should keep session data for AT LEAST 24 hour
ini_set('session.gc_maxlifetime', 60 * 60 * 24);
// each client should remember their session id for EXACTLY 24 hour
session_set_cookie_params(60 * 60 * 24);
session_start();
}
因此您确实要在调用ini_set和session_set_cookie_params等之后开始会话
答案 4 :(得分:0)
答案 5 :(得分:0)
这对我有用:
if (!isset($_SESSION)) {
// server should keep session data for AT LEAST 24 hour
ini_set('session.gc_maxlifetime', 60 * 60 * 24);
session_start();
// each client should remember their session id for EXACTLY 24 hour
session_set_cookie_params(60 * 60 * 24);
}
答案 6 :(得分:-1)
您可以通过仅在需要时运行命令来解决此问题:
if (!isset($_SESSION)
&& !headers_sent()
) {
session_start();
}