himiklab\yii2\recaptcha\ReCaptchaValidator::getResponse PHP Method

    protected function getResponse($request)
    {
        if ($this->grabberType === self::GRABBER_PHP) {
            $response = @file_get_contents($request);
            if ($response === false) {
                throw new Exception('Unable connection to the captcha server.');
            }
        } else {
            $options = array(CURLOPT_CUSTOMREQUEST => 'GET', CURLOPT_POST => false, CURLOPT_RETURNTRANSFER => true, CURLOPT_HEADER => false, CURLOPT_FOLLOWLOCATION => true, CURLOPT_ENCODING => '', CURLOPT_AUTOREFERER => true, CURLOPT_CONNECTTIMEOUT => 120, CURLOPT_TIMEOUT => 120, CURLOPT_MAXREDIRS => 10);
            $ch = curl_init($request);
            curl_setopt_array($ch, $options);
            $content = curl_exec($ch);
            $err = curl_errno($ch);
            $errmsg = curl_error($ch);
            $header = curl_getinfo($ch);
            curl_close($ch);
            $header['errno'] = $err;
            $header['errmsg'] = $errmsg;
            $response = $content;
            if ($header['errno'] !== 0) {
                throw new Exception('Unable connection to the captcha server. Curl error #' . $header['errno'] . ' ' . $header['errmsg']);
            }
        }
        return Json::decode($response, true);
    }