会话无法在codeigniter中工作

Question

在我的项目中，会话在几天前工作正常。但现在它不起作用。我找不到错误。 plsease帮助我。它显示错误称为严重性：注意

消息：未定义
指数：姓名
文件名：user_include/header.php文件
行号：遇到5
甲PHP错误
严重性：注意
消息：未定义
指数：ID
文件名：user_include/header.php文件
行号：7

控制器

/ Check for user login process 
public function user_login_process() { 

$this->form_validation->set_rules('email', 'Email', 'trim|required|xss_clean'); 
$this->form_validation->set_rules('password', 'Password', 'trim|required|xss_clean'); 

if ($this->form_validation->run() == FALSE) { 
if(isset($this->session->userdata['logged_in'])){ 
//$this->load->view('admin_page'); 
    $this->home(); 
}else{ 
$this->load->view('user_site/login_form'); 
} 
} else { 
$data = array(
'email' => $this->input->post('email'), 
'password' => $this->input->post('password') 
); 
$result = $this->login_database->login($data); 
if ($result == TRUE) { 

$email = $this->input->post('email'); 
$result = $this->login_database->read_user_information($email); 
if ($result != false) { 
$session_data = array(
'firstname' => $result[0]->firstname, 
'email' => $result[0]->email, 
    'id' => $result[0]->id, 
); 
// Add user data in session 
$this->session->set_userdata('logged_in', $session_data); 

        $this->load->view("user_include/header"); 
        $this->load->view('user_site/index'); 
} 
} else { 
$data = array(
'error_message' => 'Invalid Username or Password' 
); 
$this->load->view('user_site/login_form', $data); 
} 
} 
} 





// Logout 
public function logout() { 

// Removing session data 
$sess_array = array(
'email' => '' 


); 
$this->session->unset_userdata('logged_in', $sess_array); 
$data['message_display'] = 'Successfully Logout'; 
$this->load->view('user_site/login_form', $data); 
} 
    }  

?> 

模型

// Read data using username and password 
public function login($data) { 

$condition = "email =" . "'" . $data['email'] . "' AND " . "password =" . "'" . $data['password'] . "'"; 
$this->db->select('*'); 
$this->db->from('user'); 
$this->db->where($condition); 
$this->db->limit(1); 
$query = $this->db->get(); 

if ($query->num_rows() == 1) { 

return true; 
} else { 
return false; 
} 
} 

// Read data from database to show data in admin page 
public function read_user_information($email) { 

$condition = "email =" . "'" . $email . "'"; 
$this->db->select('*'); 
$this->db->from('user'); 
$this->db->where($condition); 
$this->db->limit(1); 
$query = $this->db->get(); 

if ($query->num_rows() == 1) { 
return $query->result(); 
} else { 
return false; 
} 
} 

} 

?> 

视图

<?php 
if (isset($this->session->userdata['logged_in'])) { 
$firstname = ($this->session->userdata['logged_in']['firstname']); 
$email = ($this->session->userdata['logged_in']['email']); 
$id = ($this->session->userdata['logged_in']['id']); 
} else { 
header("location: login"); 
} 

Answer 1

的错误是在你user_include/header.php，检查你的ID和名字，然后再回显出来。

Answer 2

在模型中给出的代码替换下面的代码：

public function read_user_information($email) { 

    $condition = "email =" . "'" . $email . "'"; 
    $this->db->select('*'); 
    $this->db->from('user'); 
    $this->db->where($condition); 
    $this->db->limit(1); 
    $query = $this->db->get(); 

    if ($query->num_rows() == 1) { 
     return $query->result(); 
    } else { 
     return false; 
    } 
} 

要

public function read_user_information($email) { 
    $this->db->select('firstname, email, id'); 
    $this->db->from('user'); 
    $this->db->where('email',$email); 
    $query = $this->db->get(); 

    if ($query->num_rows() > 0) { 
     return $query->row_array(); 
    } else { 
     return false; 
    } 
} 

在您的控制器替换下面给出

$email = $this->input->post('email'); 
$result = $this->login_database->read_user_information($email); 
if ($result != false) { 
$session_data = array(
'firstname' => $result[0]->firstname, 
'email' => $result[0]->email, 
    'id' => $result[0]->id, 
); 
// Add user data in session 
$this->session->set_userdata('logged_in', $session_data); 

        $this->load->view("user_include/header"); 
        $this->load->view('user_site/index'); 
} 

代码为

$email = $this->input->post('email'); 
$user_details = $this->login_database->read_user_information($email); 
if ($user_details != false) { 
    // Add user data in session 
    $this->session->set_userdata('logged_in', $user_details); 
    $this->load->view("user_include/header"); 
    $this->load->view('user_site/index'); 
} 

在视图中，通过下列替换代码：

<?php 
$user_details = $this->session->userdata['logged_in']); 

if ($user_details != "") { 
    $firstname = $user_details['firstname']; 
    $email = $user_details['email']; 
    $id = $user_details['id']; 
} else { 
    header("location: login"); 
}