Simple Login with CodeIgniter in PHP
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Simple Login with CodeIgniter |
CodeIgniter is an open source web application MVC structure Framework built in PHP designed to make your life as a programmer easier. CodeIgniter allowing good speed and good performance when the site up and running. CodeIgniter details already previous post discussed
CodeIgniter.
CodeIgniter Login Database
CREATE TABLE `users` (
`id` tinyint(4) NOT NULL AUTO_INCREMENT,
`username` varchar(10) NOT NULL,
`password` varchar(100) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;
insert into users (username, password) values ('dev2tricks', MD5('secret'));
or
insert into users (username, password) values ('dev2tricks', base64('secret'));
Configure CodeIgniter
Database Access
Update the file
application/config/database.php in your CodeIgniter installation with your database info:
$db['default']['hostname'] = 'localhost';
$db['default']['username'] = 'yourdbusername';
$db['default']['password'] = 'yourdbpassword';
$db['default']['database'] = 'yourdbname';
Default Controller
We need to tell CodeIgniter to land into our login page instead of the default welcome page. Update the file
application/config/routes.php in your CodeIgniter installation with you controller’s name. We’ll call our landing controller login.
$route['default_controller'] = "login";
Libraries
In the file
application/config/autoload.php you can configure the default libraries you want to load in all your controllers.
$autoload['libraries'] = array('database','session');
$autoload['helper'] = array('url');
Model (application/models/user.php)
<?php
Class User extends CI_Model
{
function login($username, $password)
{
$this -> db -> select('id, username, password');
$this -> db -> from('users');
$this -> db -> where('username', $username);
$this -> db -> where('password', MD5($password));
$this -> db -> limit(1);
$query = $this -> db -> get();
if($query -> num_rows() == 1)
{
return $query->result();
}
else
{
return false;
}
}
}
?>
Login Controller (application/controllers/login.php)
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Login extends CI_Controller {
function __construct()
{
parent::__construct();
}
function index()
{
$this->load->helper(array('form'));
$this->load->view('login');
}
}
?>
Login View (application/views/login.php)
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Simple Login with CodeIgniter</title>
</head>
<body>
<h1>Simple Login with CodeIgniter</h1>
<?php echo validation_errors(); ?>
<?php echo form_open('verifylogin'); ?>
<label for="username">Username:</label>
<input type="text" size="20" id="username" name="username"/>
<br/>
<label for="password">Password:</label>
<input type="password" size="20" id="passowrd" name="password"/>
<br/>
<input type="submit" value="Login"/>
</form>
</body>
</html>
Login Controller (application/controllers/login.php)
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class VerifyLogin extends CI_Controller {
function __construct()
{
parent::__construct();
$this->load->model('user','',TRUE);
}
function index()
{
//This method will have the credentials validation
$this->load->library('form_validation');
$this->form_validation->set_rules('username', 'Username', 'trim|required|xss_clean');
$this->form_validation->set_rules('password', 'Password', 'trim|required|xss_clean|callback_check_database');
if($this->form_validation->run() == FALSE)
{
//Field validation failed. User redirected to login page
$this->load->view('login_view');
}
else
{
//Go to private area
redirect('home', 'refresh');
}
}
function check_database($password)
{
//Field validation succeeded. Validate against database
$username = $this->input->post('username');
//query the database
$result = $this->user->login($username, $password);
if($result)
{
$sess_array = array();
foreach($result as $row)
{
$sess_array = array(
'id' => $row->id,
'username' => $row->username
);
$this->session->set_userdata('logged_in', $sess_array);
}
return TRUE;
}
else
{
$this->form_validation->set_message('check_database', 'Invalid username or password');
return false;
}
}
}
?>
and Codeigniter database Table access insert,update delete
click here