if (isset($_POST['g-recaptcha-response'])) {
    //domain' i localhost olarak ayarladım sıkıntı yok
    $secretkey = "6LcWnSwgAAAAALptubnZCnTp2KKi4a1BSNWzRf98";
	$ip = $_SERVER['REMOTE_ADDR'];
	$response = $_POST['g-recaptcha-response'];
	$url = "https://www.google.com/recaptcha/api/siteverify=secret=$secretkey&response=$response&remoteip=$ip";
	$fire = file_get_contents($url);
	echo $url;
}
else {
	echo "ReCaptcha Error";
}