User Registration and Login System in Codeigniter 3

Solution Doodz August 26, 2021



*SQL

CREATE TABLE `user` (
`user_id` int(11) NOT NULL,
`user_name` varchar(50) NOT NULL,
`user_email` varchar(50) NOT NULL,
`user_password` varchar(50) NOT NULL,
`user_age` int(11) NOT NULL,
`user_mobile` int(11) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

* controllers

User.php

<?php

class User extends CI_Controller {

public function __construct(){

        parent::__construct();
   $this->load->helper('url');
     $this->load->model('user_model');
        $this->load->library('session');

}

public function index()
{
$this->load->view("register.php");
}

public function register_user(){

      $user=array(
      'user_name'=>$this->input->post('user_name'),
      'user_email'=>$this->input->post('user_email'),
      'user_password'=>md5($this->input->post('user_password')),
      'user_age'=>$this->input->post('user_age'),
      'user_mobile'=>$this->input->post('user_mobile')
        );
        print_r($user);

$email_check=$this->user_model->email_check($user['user_email']);

if($email_check){
  $this->user_model->register_user($user);
  $this->session->set_flashdata('success_msg', 'Registered successfully.Now login to your account.');
  redirect('user/login_view');

}
else{

  $this->session->set_flashdata('error_msg', 'Error occured,Try again.');
  redirect('user');


}

}

public function login_view(){

$this->load->view("login.php");

}

function login_user(){
  $user_login=array(

  'user_email'=>$this->input->post('user_email'),
  'user_password'=>md5($this->input->post('user_password'))

    );

    $data=$this->user_model->login_user($user_login['user_email'],$user_login['user_password']);
      if($data)
      {
        $this->session->set_userdata('user_id',$data['user_id']);
        $this->session->set_userdata('user_email',$data['user_email']);
        $this->session->set_userdata('user_name',$data['user_name']);
        $this->session->set_userdata('user_age',$data['user_age']);
        $this->session->set_userdata('user_mobile',$data['user_mobile']);

        $this->load->view('user_profile.php');

      }
      else{
        $this->session->set_flashdata('error_msg', 'Error occured,Try again.');
        $this->load->view("login.php");

      }


}

function user_profile(){

$this->load->view('user_profile.php');

}
public function user_logout(){

  $this->session->sess_destroy();
  redirect('user/login_view', 'refresh');
}

}


?>

*MODELS

User_model.php

<?php
class User_model extends CI_model{



public function register_user($user){


$this->db->insert('user', $user);

}

public function login_user($email,$pass){

  $this->db->select('*');
  $this->db->from('user');
  $this->db->where('user_email',$email);
  $this->db->where('user_password',$pass);

  if($query=$this->db->get())
  {
      return $query->row_array();
  }
  else{
    return false;
  }


}
public function email_check($email){

  $this->db->select('*');
  $this->db->from('user');
  $this->db->where('user_email',$email);
  $query=$this->db->get();

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

}

}

?>

*views
login.php

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Login-CI Login Registration</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" media="screen" title="no title">
  </head>
  <body>

    <div class="container">
    <div class="row">
        <div class="col-md-4 col-md-offset-4">
            <div class="login-panel panel panel-success">
                <div class="panel-heading">
                    <h3 class="panel-title">Login</h3>
                </div>
                <?php
              $success_msg= $this->session->flashdata('success_msg');
              $error_msg= $this->session->flashdata('error_msg');

                  if($success_msg){
                    ?>
                    <div class="alert alert-success">
                      <?php echo $success_msg; ?>
                    </div>
                  <?php
                  }
                  if($error_msg){
                    ?>
                    <div class="alert alert-danger">
                      <?php echo $error_msg; ?>
                    </div>
                    <?php
                  }
                  ?>

                <div class="panel-body">
                    <form role="form" method="post" action="<?php echo base_url('user/login_user'); ?>">
                        <fieldset>
                            <div class="form-group"  >
                                <input class="form-control" placeholder="E-mail" name="user_email" type="email" autofocus>
                            </div>
                            <div class="form-group">
                                <input class="form-control" placeholder="Password" name="user_password" type="password" value="">
                            </div>


                                <input class="btn btn-lg btn-success btn-block" type="submit" value="login" name="login" >

                        </fieldset>
                    </form>
                <center><b>Not registered ?</b> <br></b><a href="<?php echo base_url('user'); ?>">Register here</a></center><!--for centered text-->

                </div>
            </div>
        </div>
    </div>
</div>


  </body>

</html>

register.php

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Registration-CI Login Registration</title>

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" media="screen" title="no title">


  </head>
  <body>

<span style="background-color:red;">
  <div class="container"><!-- container class is used to centered  the body of the browser with some decent width-->
      <div class="row"><!-- row class is used for grid system in Bootstrap-->
          <div class="col-md-4 col-md-offset-4"><!--col-md-4 is used to create the no of colums in the grid also use for medimum and large devices-->
              <div class="login-panel panel panel-success">
                  <div class="panel-heading">
                      <h3 class="panel-title">Registration</h3>
                  </div>
                  <div class="panel-body">

                  <?php
                  $error_msg=$this->session->flashdata('error_msg');
                  if($error_msg){
                    echo $error_msg;
                  }
                   ?>

                      <form role="form" method="post" action="<?php echo base_url('user/register_user'); ?>">
                          <fieldset>
                              <div class="form-group">
                                  <input class="form-control" placeholder="Name" name="user_name" type="text" autofocus>
                              </div>

                              <div class="form-group">
                                  <input class="form-control" placeholder="E-mail" name="user_email" type="email" autofocus>
                              </div>
                              <div class="form-group">
                                  <input class="form-control" placeholder="Password" name="user_password" type="password" value="">
                              </div>

                              <div class="form-group">
                                  <input class="form-control" placeholder="Age" name="user_age" type="number" value="">
                              </div>

                              <div class="form-group">
                                  <input class="form-control" placeholder="Mobile No" name="user_mobile" type="number" value="">
                              </div>

                              <input class="btn btn-lg btn-success btn-block" type="submit" value="Register" name="register" >

                          </fieldset>
                      </form>
                      <center><b>Already registered ?</b> <br></b><a href="<?php echo base_url('user/login_view'); ?>">Login here</a></center><!--for centered text-->
                  </div>
              </div>
          </div>
      </div>
  </div>

</span>

  </body>
</html>

user_profile.php

<?php
$user_id=$this->session->userdata('user_id');

if(!$user_id){

  redirect('user/login_view');
}

 ?>

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>User Profile Dashboard-CodeIgniter Login Registration</title>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
  </head>
  <body>

<div class="container">
  <div class="row">
    <div class="col-md-4">

      <table class="table table-bordered table-striped">


        <tr>
          <th colspan="2"><h4 class="text-center">User Info</h3></th>

        </tr>
          <tr>
            <td>User Name</td>
            <td><?php echo $this->session->userdata('user_name'); ?></td>
          </tr>
          <tr>
            <td>User Email</td>
            <td><?php echo $this->session->userdata('user_email');  ?></td>
          </tr>
          <tr>
            <td>User Age</td>
            <td><?php echo $this->session->userdata('user_age');  ?></td>
          </tr>
          <tr>
            <td>User Mobile</td>
            <td><?php echo $this->session->userdata('user_mobile');  ?></td>
          </tr>
      </table>


    </div>
  </div>
<a href="<?php echo base_url('user/user_logout');?>" >  <button type="button" class="btn-primary">Logout</button></a>
</div>
  </body>

</html>

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