用户注册CodeIgniter

我强烈建议您考虑使用另一个已经在这方面做得很好的库:TankAuth。TankAuth很容易修改，并提供电子邮件确认，非常安全的密码散列，一个坚实的数据库模式，和非常干净的代码。

没有理由重新发明轮子，特别是当涉及到像用户身份验证这样很难正确处理的事情时。

例如，这里是TankAuth提供的所有安全方面的东西，你必须自己编码(如果你关心安全性)——这需要多少时间?

Using phpass library for password hashing (instead of unsafe md5).
Counting login attempt for bruteforce preventing (optional). Failed login attempts determined by IP and by username.
Logging last login IP-address and time (optional).
CAPTCHA for registration and repetitive login attempt (optional).
Unactivated accounts and forgotten password requests auto-expire.

你需要为你的控制器创建一个模型
你的模型看起来像这样:

class Register_model extends CI_Model {
    function register_user()
    {
        $data['username'] = $this->input->post('username');
        $data['password'] = sha1($this->input->post('password'));
        ... (your other post data) ...
        $this->db->insert('users', $data);
    }
}

$this->load->model('Register_model');

方法在这里:

else
{
    $this->Register_model->register_user(); 
    $this->load->view('register_done');
}

如果要检查用户名是否可用，只需将SELECT query放在register_user()方法(函数)的第一行。

要做检查，你应该在你的模型中有函数可以为你查找这些类型的东西:

class Model{
    function getUserByEmail($email);
    function getUserByUsername($username);
    ...
}        

然后在控制器中你可以调用这些方法

...
$result = $model->getUserByEmail($_POST['email']); // You'll need to sanitize your POST
if(count($result) > 0){
    // Sent error about email already existing and flag to not insert/update user
}
...

在CodeIgniter中最简单的解决方案是使用回调函数作为表单验证中的规则之一。我自己也用过这种方法来检查用户名和电子邮件。

这里是docs。

define ('BASEPATH') OR exit('No direct script access allowed');

类User扩展CI_Controller {

public function __construct() {
    parent::__construct();
    $this->load->helper('form');
    // Load session library
    $this->load->library('session');
    // Load database
    $this->load->model('User_model');
}
public function index()
    {
        $this->load->view('index');
    }
    public function project()
    {
          $this->data['posts'] = $this->User_model->getPosts(); // calling Post model method getPosts()
            $this->load->view('tables', $this->data);
            // $this->load->aview('project');
    }
    public function get_project()
    {
        $this->User_model->get_project($data);
    }
    public  function signin()
    {
        $data = array(
            'email' => $this->input->post('email'),
            'password' => $this->input->post('password')
        );
        $this->User_model->signin($data);
    }
    public function logout()
    {
        $this->session->unset_userdata($_SESSION['email']);
        // $this->session->sess_destroy();
        redirect('User');
    }
    public function signup()
    {
     $data = array(
            'name' => $this->input->post('name'),
            'phone' => $this->input->post('phone'),
            'email' => $this->input->post('email'),
            'password' => $this->input->post('password')
        );
     if($this->User_model->signup($data))
     {
        echo "no insert";
     }
     else
     {
        $this->load->view('index', $data);
     }
}
}

<?php
Class User_model extends CI_Model {
    function __construct() {
    parent::__construct();
    $this->load->library('session');

    }
    public function signup($data)
    {
        $this->db->insert('user_signup',$data);
    }
    public function getPosts()
     {
              $this->db->select("*"); 
              $this->db->from('user_data');
              $query = $this->db->get();
              return $query->result();
    }

    public function signin($data)
    {
            $this->db->where('email',$data['email']);
            $this->db->where('password',$data['password']);
            $query=$this->db->get('user_signup');
            if($query->num_rows()==1){
                $_SESSION['email'] = $data['email'];
                $this->load->view('popup',$data);
                return true;
    }
    else{
            echo "no";
            return false;
    }
    }
}