Codeigniter-Google-ReCaptcha uses Codeigniter Form Validation.You just need to edit your config and form view.You don't need to write any extra codes.A simple Google ReCaptcha implementation for CodeIgniter - Easy installation - Write Less Code With 2 Steps
###Demo Page
You can easily implement "Google ReCaptcha" to your forms with 2 Steps.You don't need to write any extra codes on the controller for Google ReCaptcha validation.Just use codeigniter validation library.
Controller
$this->load->library('form_validation');
$validation_rules = array(); // If you have another form rules you can define
$this->form_validation->set_rules($validation_rules);
if($this->form_validation->run()){
exit("Form validated");
}Open the "config/gcaptcha" file and write to "gcaptcha_server_secret" and "gcaptcha_client_secret" codes.
/*
|--------------------------------------------------------------------------
| Google Captcha Server Secret Code
|--------------------------------------------------------------------------
*/
$config['gcaptcha_server_secret'] = '';
/*
|--------------------------------------------------------------------------
| Google Captcha Client Secret Code
|--------------------------------------------------------------------------
*/
$config['gcaptcha_client_secret'] = '';Put these codes into the your html forms.
<?php echo create_gcaptcha();?>
<span class="error"><?php echo gcaptcha_error();?></span>