使用多个控制器会导致会话错误代码符号 [英] Using multiple controllers cause session error codeigniter
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问题描述
当我在我的应用程序中只使用一个控制器时，用户，一切工作正常。当我尝试使用2或3来划分代码并创建一些结构时，我的应用程序总是给出以下错误：
When I use only 1 controller in my application, user, everything works fine. When I try to use 2 or 3 to divide the code and create some structure my application always give the following error :
A PHP Error was encountered
Severity: Warning
Message: session_start(): Cannot send session cache limiter - headers already sent (output started at /Applications/MAMP/htdocs/BT_dashboard/application/controllers/Project.php:99)
Filename: Session/Session.php
Line Number: 140
Backtrace:
File: /Applications/MAMP/htdocs/BT_dashboard/application/controllers/Project.php
Line: 11
Function: __construct
File: /Applications/MAMP/htdocs/BT_dashboard/index.php
Line: 292
Function: require_once
Googled它尝试了很多东西，但找不到答案。我使用codeigniter 3.我的用户控制器看起来像：
Googled it and tried many things but can't find an answer. I'm using codeigniter 3. My User controller looks like :
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
/**
* User class.
*
* @extends CI_Controller
*/
class User extends CI_Controller {
public function __construct() {
parent::__construct();
$this->load->helper(array('url'));
$this->load->model('user_model');
$this->load->model('employee_model');
$this->load->model('customer_model');
$this->load->model('project_model');
}
public function createProject() {
if ($_SESSION['userlevel']) {
if ($_SESSION['userlevel'] < 3) {
$userid = $this->uri->segment(3);
} else {
$userid = $this->input->post('userproject');
}
$this->load->helper('form');
$this->load->library('form_validation');
$this->form_validation->set_rules('project_name', 'project name', 'trim|required|min_length[2]|callback_is_project_name_unique[' . $this->input->post('project_name') . ']');
$this->form_validation->set_rules('project_address', 'project address', 'trim|required|min_length[2]');
$this->form_validation->set_rules('project_description', 'project description', 'trim|required|min_length[2]');
$this->form_validation->set_rules('project_city', 'project city', 'trim|required|min_length[2]');
if ($this->form_validation->run() == FALSE) {
$data['userdata'] = $this->session->userdata;
$this->load->view('header', $data);
if ($_SESSION['userlevel'] < 3) {
$this->load->view('dashboard_add_project', $data);
} else {
$data['userslist'] = $this->user_model->get_users_list();
$this->load->view('dashboard_add_project_admin', $data);
}
$this->load->view('wrapper', $data);
} else {
$Address = urlencode($this->input->post('project_address'));
$request_url = "http://maps.googleapis.com/maps/api/geocode/xml?address=" . $Address . "&sensor=true";
$xml = simplexml_load_file($request_url) or die("url not loading");
$status = $xml->status;
if ($status == "OK") {
$Lat = $xml->result->geometry->location->lat;
$Lon = $xml->result->geometry->location->lng;
$LatLng = "$Lat,$Lon";
}
//pass validation
$data = array(
'project_name' => $this->input->post('project_name'),
'project_address' => $this->input->post('project_address'),
'project_description' => $this->input->post('project_description'),
'project_city' => $this->input->post('project_city'),
'project_finished' => $this->input->post('project_finished'),
'lat' => $Lat,
'lng' => $Lon,
);
//$this->db->insert('tbl_user', $data);
if ($this->user_model->create_project($data, $userid, $this->input->post('project_name'))) {
if ($_SESSION['userlevel'] > 1) {
$data['projectlist'] = $this->user_model->get_project_list();
$data['uncompleted_projects'] = $this->user_model->get_uncompleted_projects();
$data['completed_projects'] = $this->user_model->get_completed_projects();
} else {
$data['projectlist'] = $this->user_model->get_project_list_userid($userid);
}
$data['userdata'] = $this->session->userdata;
$this->load->view('header', $data);
$this->load->view('dashboard_projects', $data);
$this->load->view('wrapper', $data);
} else {
$data->error = 'There was a problem creating your new employee. Please try again.';
$data['userdata'] = $this->session->userdata;
// send error to the view
$this->load->view('header', $data);
$this->load->view('dashboard_add_project', $data);
$this->load->view('wrapper', $data);
}
}
}
}
第二控制器，项目控制器。这是我想使用的控制器知道粘贴createproject代码，因此这给了更多的结构。但是当我把它粘贴在这里，适应我的意见，它给出的错误。这里是我的project_controller代码：
My second controller, the project controller. This is the controller I want to use know to paste the createproject code so this gives more structure. But when I paste it here and adapt my views it gives the error. here's my project_controller code:
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
/*
* File Name: employee.php
*/
class Project extends CI_Controller {
public function __construct() {
parent::__construct();
$this->load->helper(array('url'));
$this->load->model('user_model');
$this->load->model('employee_model');
$this->load->model('customer_model');
}
public function createProject() {
//same as usercontroller
我的用户/用户控制器中的登录代码：
My User/login code in User controller :
public function login() {
$loggedin = $this->session->userdata('logged_in');
if (!$loggedin) {
$this->load->helper('form');
$this->load->library('form_validation');
$this->form_validation->set_rules('user_mail', 'user mail', 'required');
$this->form_validation->set_rules('user_password', 'user password', 'required');
if ($this->form_validation->run() == false) {
$data = new stdClass();
$data->error = 'Check your user and password';
$this->load->view('dashboard_login', $data);
} else {
$usermail = $this->input->post('user_mail');
$password = $this->input->post('user_password');
if ($this->user_model->resolve_user_login($usermail, $password)) {
$user_id = $this->user_model->get_user_id_from_mail($usermail);
$user = $this->user_model->get_user($user_id);
$_SESSION['user_id'] = $user_id;
$_SESSION['user_name'] = (string) $user->user_name;
$_SESSION['logged_in'] = (bool) true;
$_SESSION['user_gsm'] = (string) $user->user_gsm;
$_SESSION['user_address'] = (string) $user->user_address;
$_SESSION['user_city'] = (string) $user->user_city;
$_SESSION['userlevel'] = $this->user_model->get_user_level((int) $user->user_id);
$_SESSION['user_mail'] = $usermail;
$data['userdata'] = $this->session->userdata;
if ($_SESSION['userlevel'] == "3") {
$data['employeetotal'] = $this->user_model->get_amount_employees();
$data['customertotal'] = $this->user_model->get_amount_customers();
$data['projectstotal'] = $this->user_model->get_amount_projects();
}
$this->load->view('header', $data);
$this->load->view('dashboard_index', $data);
$this->load->view('wrapper', $data);
} else {
$data = new stdClass();
// login failed
$data->error = 'Wrong username or password.';
// send error to the view
$this->load->view('dashboard_login', $data);
}
}
} else {
$data['userdata'] = $this->session->userdata;
$data['employeetotal'] = $this->user_model->get_amount_employees();
$data['customertotal'] = $this->user_model->get_amount_customers();
$data['projectstotal'] = $this->user_model->get_amount_projects();
$this->load->view('header', $data);
$this->load->view('dashboard_index', $data);
$this->load->view('wrapper', $data);
}
}
在配置/自动加载我有以下： / p>
In config/autoload I've got following:
$autoload['libraries'] = array('database','session');
推荐答案
这是一个常见的问题， 在您的控制器 Project.php （您应该只有76行，如果我是正确的）上的行99 。我敢打赌你的控制器没有99行...删除额外的行，错误将消失。
或如果您在第99行有回声
This is a common problem , notice that the error is on line 99 on your controller Project.php (you should have only 76 lines if I am correct). I bet your controller doesn't have 99 lines ... delete the extra lines and the error will vanish.
or if you have an echo on line 99 comment it
希望有帮助！
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