php 消息：ini_set()：会话处于活动状态。您此时无法更改会话模块的 ini 设置
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Message: ini_set(): A session is active. You cannot change the session module's ini settings at this time
提问by noushid p
I created a login page with codeigniter,but i get the php message.
我用 codeigniter 创建了一个登录页面，但我收到了 php 消息。
Message: ini_set(): A session is active. You cannot change the session module's ini settings at this time
Message: ini_set(): A session is active. You cannot change the session module's ini settings at this time
how to fix this?
如何解决这个问题？
view (login.php)
查看（登录.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>
controller (Verify_login.php)
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');
}
}
}
?>
controller(Admin.php)
控制器（Admin.php）
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');
}
model (User.php)
模型（User.php）
<?php
/** *user login claass which extends MY_Model * */
/** *扩展MY_Model的用户登录类* */
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 $query->result();
}
else{
return false;
}
}
}
?>
回答by Sanoob
You don't need this line in admin.php
您不需要admin.php 中的这一行
session_start(); //need to call PHP's session object to access it though it
When you load session library it's constructor does these for you.
当您加载会话库时，它的构造函数会为您执行这些操作。
回答by Jesse
The message means that you have started a session with session_start()in which further down in the code you are using ini_set()to manipulate the session module. If you are manipulating the session module, it should be done before a session is started and active.
该消息意味着您已经开始了一个会话，session_start()在该会话中您ini_set()用于操作会话模块的代码更深入。如果您正在操作会话模块，则应在会话启动和活动之前完成。
回答by ShapCyber
Message: ini_set(): A session is active. You cannot change the session module's ini settings at this time
消息：ini_set()：会话处于活动状态。您此时无法更改会话模块的 ini 设置
I had same error message sometime ago , By default Code-igniter will write to file (C:\xampp\tmp) in my case. But I want it to write to database instead.
我前一段时间有同样的错误消息，默认情况下，Code-igniter 将写入文件（C:\xampp\tmp）在我的情况下。但我希望它改为写入数据库。
In your autoloader you might have had something like this:
在您的自动加载器中，您可能遇到过这样的事情：
//:::::$autoload['libraries'] = array();
//'session', this mean start session ini_set()
$autoload['libraries'] = array('session', 'database');
By default setting in the config/config.php session configurartion look like this:
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;
The documentationstated that to use database instead of file you should first create a table in application database.
该文档指出，要使用数据库而不是文件，您应该首先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`)
);
Go back to the config/config.phpand change $config['sess_driver'] = 'files';to $config['sess_driver'] = 'database';
回到config/config.php并更改$config['sess_driver'] = 'files';为$config['sess_driver'] = 'database';
Like so I thought everything should be fine but I got the error Message: ini_set(): A session is active. You cannot change the session module's ini settings at this time
就像这样，我认为一切都应该没问题，但我收到了错误消息：ini_set(): A session is active。您此时无法更改会话模块的 ini 设置
My Solution was to first run the session_destroy();
我的解决方案是首先运行 session_destroy();
Then change session name and table name
然后更改会话名称和表名称
My config look like this :
我的配置是这样的：
$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;
$config['sess_regenerate_destroy'] = FALSE;
Save everything and after refresh the page all cleared, no error message showing
保存所有内容，刷新页面后全部清除，没有显示错误消息
回答by I B
This is really working for me
这真的对我有用
if (!isset($_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();
}
so you do start your session after calling ini_set and session_set_cookie_params etc
所以你确实在调用 ini_set 和 session_set_cookie_params 等之后开始你的会话
回答by cjohansson
You can handle this issue by only running the command when it's needed like this:
您可以通过仅在需要时运行命令来处理此问题，如下所示：
if (!isset($_SESSION)
&& !headers_sent()
) {
session_start();
}
回答by priya soran
- Go to file \system\libraries\Session\Session.
- Uncomment session_start() at line 143 and you are done.
- 转到文件 \system\libraries\Session\Session。
- 取消第 143 行的 session_start() 注释，您就完成了。
