Getting Null in g-recaptcha-response Google's reCaptcha

Question

I am trying to implement Google\'s reCaptcha v.2.0 but i am getting null in g-recaptcha-response due to this reCaptcha is not working properly and I am always g

Answer 1

I've run into the same issue. The strangest part is a client-side call to grecaptcha.getResponse() returns to correct response. For some reason it's just not setting g-recaptcha-response. So my workaround was to set a data-callback function to populate a hidden field with the response and use that server-side instead. The hidden input also helps with ease of client-side validation.
eg:

javascript:

function captcha_onclick() {
    document.getElementById('recaptchaValidator').value = grecaptcha.getResponse();
}

server-side:

if(!empty($_POST['recaptcha'])) {
    $captcha = $_POST['recaptcha'];
    ...
}