$api_call= '/oauth/auth_native_traditional';
$params= array(
    'client_id'=> JANRAIN_LOGIN_CLIENT_ID,
    'flow'=> JANRAIN_FLOW_NAME,
    'flow_version'=> JANRAIN_FLOW_VERSION,
    'locale'=> 'en-US',
    'redirect_uri'=> 'https://localhost',
    'response_type'=> 'code',
    // the name of your sign-in form as defined in the flow file
    'form'=> 'signInForm',
    // required fields from signInForm
    'signInEmailAddress'=> $_POST['email'],
    'currentPassword'=> $_POST['password']
);
$curl= curl_init();
curl_setopt($curl,CURLOPT_URL,JANRAIN_CAPTURE_URL.$api_call);
cur_setopt($curl,CURLOPT_POST,true);
curl_setopt($curl,CURLOPT_RETURNTRANSFER,true);
curl_setopt($curl,CURLOPT_POSTFIELDS,http_build_query($params));
$api_response= json_decode(curl_exec($curl));
curl_close($curl);

$api_call= '/oauth/register_native_traditional';
$params= array(
    'client_id'=> JANRAIN_LOGIN_CLIENT_ID,
    'flow'=> JANRAIN_FLOW_NAME,
    'flow_version'=> JANRAIN_FLOW_VERSIONS,
    'locale'=> 'en-US',
    'redirect_uri'=> 'https://localhost',
    'response_type'=> 'code',
    // the name of your registration form as defined in the flow file
    'form'=> 'registrationForm',
    // required fields from registrationForm
    'firstName'=> $_POST['firstName'],
    'lastName'=> $_POST['lastName'],
    'displayName'=> $_POST['displayName'],
    'emailAddress'=> $_POST['email'],
    'newPassword'=> $_POST['password'],
    'newPasswordConfirm'=> $_POST['passwordConfirm']
);
$curl= curl_init();
curl_setopt($curl,CURLOPT_URL,JANRAIN_CAPTURE_URL.$api_call);
curl_setopt($curl,CURLOPT_POST,true);
curl_setopt($curl,CURLOPT_RETURNTRANSFER,true);
curl_setopt($curl,CURLOPT_POSTFIELDS,http_build_query($params));
$api_response= json_decode(cur_exec($curl));
curl_close($curl);