How to use captcha in codeigniterCreate a controller
application/controllers/captcha.php
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Captcha extends CI_Controller {
public function __construct() {
parent:: __construct();
$this->load->helper("url");
$this->load->helper('form');
$this->load->helper('captcha');
$this->load->library('form_validation');
}
public function index() {
//validating form fields
$this->form_validation->set_rules('username', 'Email Address', 'required');
$this->form_validation->set_rules('user_password', 'Password', 'required');
$this->form_validation->set_rules('userCaptcha', 'Captcha', 'required|callback_check_captcha');
$userCaptcha = $this->input->post('userCaptcha');
if ($this->form_validation->run() == false){
// numeric random number for captcha
$random_number = substr(number_format(time() * rand(),0,'',''),0,6);
// setting up captcha config
$vals = array(
'word' => $random_number,
'img_path' => './captcha_images/',
'img_url' => base_url().'captcha_images/',
'img_width' => 140,
'img_height' => 32,
'expiration' => 7200
);
$data['captcha'] = create_captcha($vals);
$this->session->set_userdata('captchaWord',$data['captcha']['word']);
$this->load->view('captcha', $data);
}else {
// do your stuff here.
echo 'I m here clered all validations';
}
}
public function check_captcha($str){
$word = $this->session->userdata('captchaWord');
if(strcmp(strtoupper($str),strtoupper($word)) == 0){
return true;
}
else{
$this->form_validation->set_message('check_captcha', 'Please enter correct words!');
return false;
}
}
}
Create folder root directory captcha_imagesCreate a view
application/views/captcha.php
<html>
<head>
<title>Adding a Captcha!</title>
</head>
<body>
<h1>Captcha Example</h1>
<?php echo form_open('captcha'); ?>
<div class="formSignIn" >
<div class="form-group">
<input autocomplete="off" type="text" id="username" name="username" placeholder="User Email" value="<?php if(!empty($username)){ echo $username;} ?>" />
<span class="required-server"><?php echo form_error('username','<p style="color:#F83A18">','</p>'); ?></span> </div>
<div class="form-group">
<input autocomplete="off" type="password" id="user_password" name="user_password" placeholder="User Password" value="" />
<span class="required-server"><?php echo form_error('user_password','<p style="color:#F83A18">','</p>'); ?></span> </div>
<div class="form-group">
<label for="captcha"><?php echo $captcha['image']; ?></label>
<br>
<input type="text" autocomplete="off" name="userCaptcha" placeholder="Enter above text" value="<?php if(!empty($userCaptcha)){ echo $userCaptcha;} ?>" />
<span class="required-server"><?php echo form_error('userCaptcha','<p style="color:#F83A18">','</p>'); ?></span> </div>
<div class="form-group">
<input type="submit" class="btn btn-success" value="Sign In" name="" />
</div>
</div>
<?php echo form_close(); ?>
</body>
</html>
Download http://bit.ly/2Vgfjph
