Question

I’ve installed the ReCaptcha, configured my public and private key, and everything is fine until I type any answer on it, no matter if it’s good or wrong, it doesn’t even respond with the error there was occurred.

Here is my code:

require_once('recaptchalib.php');
$resp = recaptcha_check_answer ($config->privkey,   $_SERVER["REMOTE_ADDR"], $_POST["recaptcha_challenge_field"], $_POST["recaptcha_response_field"]);

if (!$resp->is_valid) {
    echo $resp->error;
}

Answer 1

I’ve found the answer after days of searching…

Here is the solution if someone is having a similar problem:

In your rechaptchalib.php change:

define("RECAPTCHA_API_SERVER", "http://api.recaptcha.net");
define("RECAPTCHA_API_SECURE_SERVER", "https://api-secure.recaptcha.net");
define("RECAPTCHA_VERIFY_SERVER", gethostbyname('api-verify.recaptcha.net'));

To the:

define("RECAPTCHA_API_SERVER", "http://www.google.com/recaptcha/api");
define("RECAPTCHA_API_SECURE_SERVER", "https://www.google.com/recaptcha/api");
define("RECAPTCHA_VERIFY_SERVER", "www.google.com");

It was probably caused by the outdated PHP library, so it’ll be better for you to download the latest library also:

http://code.google.com/p/recaptcha/downloads/list?q=label:phplib-Latest

Thanks everyone.