Tutorialswithtips: Codeigniter--Google reCaptcha-login form

After the Simple Application, We are going to learn about Google reCaptcha-login form.

1.   Rename your Codeigniter folder as "captchaigniter".

2.   Now configure your files.Go to C:\xampp\htdocs\captchaigniter\application\config  and select autoload.php and make changes as follows.

  $autoload['libraries'] = array('xmlrpc');
$autoload['helper'] = array('url', 'file','form');

3. Select config.php and make the changes as follows.

$config['base_url'] = 'http://localhost/CaptchaIgniter/';

4. Select routes.php and make the changes as follows.

  $route['default_controller'] = "user_controller";
$route['404_override'] = '';
$route['login'] = "/user_controller/login";

5. First we need to create the google reCaptcha key.So, click here. After signing in,you will get a screen like this.

6. when you fill the required details in the above form, you will be provided with the secret key.

7. Create a new file login.php in C:\xampp\htdocs\CaptchaIgniter\application\views.Copy and paste the code given below.

login.php

8. Create a new file user_controller.php in C:\xampp\htdocs\CaptchaIgniter\application\controllers.
Copy and paste the code given below.

user_controller.php

<?php 
if(!defined('BASEPATH')) exit('No direct script access allowed');
class user_controller extends CI_Controller
{
public function __construct()
{
parent::__construct();
$this->load->library('curl');
$this->load->library('session');
}
function index()
{
$this->login();
}
public function login()
{
$this->load->view('login');
}
function signin()
{
$userName = trim($this->input->post('userName'));
$password = trim($this->input->post('password'));
$recaptchaResponse = trim($this->input->post('g-recaptcha-rsponse'));
$userIp = $this->input->ip_address();
$secret = 'Enter your secret-key';
$url = "https://www.google.com/recaptcha/api/siteverify?secret=".$secret."&response;=".$recaptchaResponse."&remoteip;=".$userIp;
$response = $this->curl->simple_get($url);
$status = json_decode($response, true);
if($status['success'])
{
$this->session->set_flashdata('flashSuccess', 'Recaptcha successful');
}
else
{
$this->session->set_flashdata('flashSuccess', 'Recaptcha unsuccessful');
}
redirect(base_url());
}
}
?>

9. Now download the curl library to connect with google captcha API to verify from abusive or spam activities on your site. you can place it here C:\xampp\htdocs\CaptchaIgniter.

10. Finally redirect the url as http://localhost/CaptchaIgniter/. You will get the following screen.

That's it!, You got your own Google reCaptcha form. In Next tutorial,we will be learning about MD5 login form.

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Sunday, October 11, 2015

Codeigniter--Google reCaptcha-login form

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