Consultar Token de google

function getCaptchaGoogle(){					
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL,"https://www.google.com/recaptcha/api/siteverify");	
	curl_setopt($ch, CURLOPT_POST, 1);	
	curl_setopt($ch, CURLOPT_POSTFIELDS, 'secret=6Lcv9YEaAAAAAAgfqv9zfwLcgknsWnLEzSLq3_N3&response='.$_REQUEST['resp']);	
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	$server_output = curl_exec($ch);
	curl_close($ch);
	echo $server_output;
	die();
}
add_action('wp_ajax_getCaptchaGoogle', 'getCaptchaGoogle');
add_action('wp_ajax_nopriv_getCaptchaGoogle', 'getCaptchaGoogle');