How to fix google recaptcha?

Question

The captcha : vista aperto

I input "vista", then I click button login. It's success to login. Should it not succeed to login, because the captcha incomplete.

whether the process is so? or is there a way to fix?

I using library recaptcha. I using codeigniter framework. My library is like this :

class Google_recaptcha
{
    function check_captcha($private_key, $remote_ip, $challenge, $response)
    {   
        if (!preg_match('/[^A-Za-z0-9\s]/', $response))
        {
            $CI =& get_instance();
            $CI->load->library('scurl');
            $array['site'] = 'http://www.google.com/recaptcha/api/verify';
            $array['post'] = 'privatekey='.$private_key.'&remoteip='.$remote_ip.'&challenge='.$challenge.'&response='.$response;
            $array['referer'] = '';
            $array['method'] = 'POST';

            $response = $CI->scurl->scurl($array);
            $response = explode("\n", $response);
        }
        else
            $response = array('false');

        return $response;
    }
}

Answer 1

不要使用那些旧脚本。尝试reCaptcha。它好多了。只需点击授权而无需输入任有时您必须选择一种图片。通过Google的网络API，您可以控制安全级别。 https://www.google.com/recaptcha/intro/index.html

Answer 2

这是如此古老的recapcha版本。谷歌不支持。尝试新版本的recapcha。它易于使用表单提交和导航进行导航验证由谷歌运行。 https://www.google.com/recaptcha/intro/index.html

＆安培;它还有用于CodeIgniter的reCAPTCHA库 https://github.com/appleboy/CodeIgniter-reCAPTCHA

示例代码 http://www.technicalkeeda.com/php-codeigniter/google-new-recaptcha