Method isValid

public static function isValid()
{
    $app = Factory::getApplication();
    $pC = PhocacartUtils::getComponentParameters();
    $secretKey = strip_tags(trim($pC->get('recaptcha_privatekey', '')));
    //$response 	= $app->input->post->get('g-recaptcha-response', '', 'string');
    //$response	= $ POST['g-recaptcha-response'];
    $response = $app->input->post->get('g-recaptcha-response', '', 'string');
    $remoteIp = $_SERVER['REMOTE_ADDR'];
    $urlVerify = 'https://www.google.com/recaptcha/api/siteverify';
    $recaptchaMethod = $pC->get('recaptcha_request_method', 2);
    //1 file_get_contents, 2 curl
    try {
        if ($recaptchaMethod == 1) {
            // FILE GET CONTENTS
            $data = ['secret' => $secretKey, 'response' => $response, 'remoteip' => $remoteIp];
            $options = ['http' => ['header' => "Content-type: application/x-www-form-urlencoded\r\n", 'method' => 'POST', 'content' => http_build_query($data)]];
            $context = stream_context_create($options);
            $result = file_get_contents($urlVerify, false, $context);
        } else {
            // CURL
            $ch = curl_init();
            curl_setopt_array($ch, [
                CURLOPT_URL => $urlVerify,
                CURLOPT_POST => true,
                //	CURLOPT_SSL_VERIFYPEER => false,
                //	CURLOPT_SSL_VERIFYHOST => false,
                CURLOPT_POSTFIELDS => ['secret' => $secretKey, 'response' => $response, 'remoteip' => $remoteIp],
                CURLOPT_RETURNTRANSFER => true,
            ]);
            $result = curl_exec($ch);
            curl_close($ch);
        }
        //$resultString = print r($result, true);
        //PhocacartLog::add(3, 'Ask a Question - Captcha Result', 0, $resultString);
        if (!$result) {
            return false;
        }
        return json_decode($result)->success;
    } catch (Exception $e) {
        return null;
    }
}