24. CodeIgniter simple login with sessions
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This document describes a simple login system using CodeIgniter sessions. It has a LoginController that handles login, logout, and authenticated routes. The index method loads a login view with a form. The check method validates credentials on form submit and sets a session variable if valid, redirecting to the authenticated ura method. ura checks for the session variable and loads a welcome view. Logout destroys the session and redirects back to login.
![config/routes.php
$route['default_controller'] = 'LoginController';
$route['404_override'] = '';
$route['translate_uri_dashes'] = FALSE;](https://image.slidesharecdn.com/24-190422102701/85/24-CodeIgniter-simple-login-with-sessions-2-320.jpg)
![LoginController
<?php
defined('BASEPATH') OR exit('No direct script
access allowed');
class LoginController extends CI_Controller {
public function index()
{
$data['title'] ="Login form";
$this->load->view('main_view',$data);
}](https://image.slidesharecdn.com/24-190422102701/85/24-CodeIgniter-simple-login-with-sessions-3-320.jpg)
![public function check()
{
if((($_POST["text1"]=="user1")&&($_POST["pass1"]=="pass1")))
{
$this->session->set_userdata('username',$_POST["text1"]);
return redirect('LoginController/ura');
}
else{
echo "Wrong input!";
exit;
}
}](https://image.slidesharecdn.com/24-190422102701/85/24-CodeIgniter-simple-login-with-sessions-4-320.jpg)
![public function ura()
{
if($this->session->userdata('username')){
$data['uname']=$this->session->userdata('username');
$this->load->view('ura',$data);
}
else{
return redirect('LoginController/index');
}
}
public function logout()
{
$this->session->sess_destroy();
redirect('LoginController/index');
}
}](https://image.slidesharecdn.com/24-190422102701/85/24-CodeIgniter-simple-login-with-sessions-5-320.jpg)
![views/main_view.php
<h1>
<?php echo $title; ?>
</h1>
<?php
echo form_open('LoginController/check');
#text control
$data = ['name' => 'text1',
'id' => 'text1',
'value' => '',
'maxlength' => '100',
'size' => '30',
'placeholder'=>'username',
];
#label
echo form_label('Username ', 'text1');
echo form_input($data);](https://image.slidesharecdn.com/24-190422102701/85/24-CodeIgniter-simple-login-with-sessions-6-320.jpg)
![echo "<br><br>";
#password control
$pass = ['name' => 'pass1',
'id' => 'pass1',
'maxlength' => '100',
'size' => '30',
'placeholder'=>'password',
];
echo form_label('Password ', 'pass1');
echo form_password($pass);
echo "<br><br>";
#submit button
echo form_submit('submit', 'Submit!');
echo form_close();](https://image.slidesharecdn.com/24-190422102701/85/24-CodeIgniter-simple-login-with-sessions-7-320.jpg)
24. CodeIgniter simple login with sessions
- 1. Simple login with sessions in CodeIgniter 3
- 2. config/routes.php $route['default_controller'] = 'LoginController'; $route['404_override'] = ''; $route['translate_uri_dashes'] = FALSE;
- 3. LoginController <?php defined('BASEPATH') OR exit('No direct script access allowed'); class LoginController extends CI_Controller { public function index() { $data['title'] ="Login form"; $this->load->view('main_view',$data); }
- 4. public function check() { if((($_POST["text1"]=="user1")&&($_POST["pass1"]=="pass1"))) { $this->session->set_userdata('username',$_POST["text1"]); return redirect('LoginController/ura'); } else{ echo "Wrong input!"; exit; } }
- 5. public function ura() { if($this->session->userdata('username')){ $data['uname']=$this->session->userdata('username'); $this->load->view('ura',$data); } else{ return redirect('LoginController/index'); } } public function logout() { $this->session->sess_destroy(); redirect('LoginController/index'); } }
- 6. views/main_view.php <h1> <?php echo $title; ?> </h1> <?php echo form_open('LoginController/check'); #text control $data = ['name' => 'text1', 'id' => 'text1', 'value' => '', 'maxlength' => '100', 'size' => '30', 'placeholder'=>'username', ]; #label echo form_label('Username ', 'text1'); echo form_input($data);
- 7. echo "<br><br>"; #password control $pass = ['name' => 'pass1', 'id' => 'pass1', 'maxlength' => '100', 'size' => '30', 'placeholder'=>'password', ]; echo form_label('Password ', 'pass1'); echo form_password($pass); echo "<br><br>"; #submit button echo form_submit('submit', 'Submit!'); echo form_close();
- 8. ura.blade.php <?php echo "Welcome ".$uname."!"; echo "<br/><br/>"; ?> <a href="<?php echo site_url('LoginController/logout') ?>">Logout</a><br/><br/>