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Home » Codeigniter »
How to create captcha in codeigniter?
Controller
File Name : Captcha.php
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Captcha extends CI_Controller
{
function __construct() {
parent::__construct();
// Load the captcha helper
$this->load->helper('captcha');
}
public function index(){
// If captcha form is submitted
if($this->input->post('submit')){
$inputCaptcha = $this->input->post('captcha');
$sessCaptcha = $this->session->userdata('captchaCode');
if($inputCaptcha === $sessCaptcha){
echo 'Captcha code matched.';
}else{
echo 'Captcha code was not match, please try again.';
}
}
// Captcha configuration
$config = array(
'img_path' => 'captcha_images/',
'img_url' => base_url().'captcha_images/',
'font_path' => base_url() .'system/fonts/texb.ttf',
'img_width' => '150',
'img_height' => 50,
'word_length' => 6,
'font_size' => 30,
'expiration' => 3600
);
$captcha = create_captcha($config);
// Unset previous captcha and store new captcha word
$this->session->unset_userdata('captchaCode');
$this->session->set_userdata('captchaCode',$captcha['word']);
// Send captcha image to view
$data['captchaImg'] = $captcha['image'];
// Load the view
$this->load->view('captcha', $data);
}
public function refresh(){
// Captcha configuration
$config = array(
'img_path' => 'captcha_images/',
'img_url' => base_url().'captcha_images/',
'font_path' => base_url() .'system/fonts/texb.ttf',
'img_width' => '150',
'img_height' => 50,
'word_length' => 6,
'font_size' => 30,
'expiration' => 3600
);
$captcha = create_captcha($config);
// Unset previous captcha and store new captcha word
$this->session->unset_userdata('captchaCode');
$this->session->set_userdata('captchaCode',$captcha['word']);
// Display captcha image
echo $captcha['image'];
}
}
View
File Name : captcha
<!DOCTYPE html>
<html>
<head>
<title>Implement Captcha in Codeigniter using helper</title>
<script>
$(document).ready(function(){
$('.captcha-refresh').on('click', function(){
$.get('<?php echo base_url().'captcha/refresh'; ?>', function(data){
$('#image_captcha').html(data);
});
});
});
</script>
<script src="<?php echo base_url(); ?>/js/jquery.js"></script>
</head>
<body>
<p id="image_captcha"><?php echo $captchaImg; ?></p>
<a href="javascript:void(0);" class="captcha-refresh" ><img src="<?php echo base_url().'assets/images/refresh.png'; ?>" width="50" height="50"/></a>
<form method="post">
<input type="text" name="captcha" value=""/>
<input type="submit" name="submit" value="SUBMIT"/>
</form>
</body>
</html>
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