Recaptcha 2.0 Joomla 3 - Validation failed - PHP

Question

I use Joomla 3.4.1 and Recaptcha v 2.0. I can't validate the captcha, i'm sure i've the good PHP code..

This is the code in plugin file, recaptcha.php :

function onCheckAnswer($code = null)[...]
   case '2.0':
      // Challenge Not needed in 2.0 but needed for getResponse call
      $challenge = null;
      $response  = $input->get('g-recaptcha-response', '', 'string');
      echo "response :<br>";
      var_dump($response);
      $spam      = ($response == null || strlen($response) == 0);
      echo "spam :<br>";
      var_dump($spam);
  break;

PHP code in my controller :

JPluginHelper::importPlugin('captcha');
$dispatcher = JDispatcher::getInstance();
$return = $dispatcher->trigger('onCheckAnswer');
echo "return :<br>";
var_dump($return[0]);

What this return :

response : string(0) ""

spam : bool(true)

return : bool(false)

I don't understand, someone can help me please ?

Thanks ;)

Answer 1

I got this solved by making sure the following conditions met

1. allow_url_fopen = On in your PHP configuration

2. jQuery is loaded on my page, if it is not loading, your template or some plugin might be suppressing somehow. check with your template developer.

Answer 2

$result = $dispatcher->trigger('onCheckAnswer',$input['recaptcha_response_field']);