<?php
// En tu método acción, haz algo similar a esto
$strGRAdvocateReferrerToken = $_GET['gr_at'];
$strGRCampaignSlug = $_GET['gr_cs'];
$strGRReferralOriginSlug = $_GET['gr_ro'];

$_SESSION['strGRAdvocateReferrerToken'] = $strGRAdvocateReferrerToken;
$_SESSION['strGRCampaignSlug'] = $strGRCampaignSlug;
$_SESSION['strGRReferralOriginSlug'] = $strGRReferralOriginSlug;
?>

<?php

require_once "../vendor/autoload.php";
$contentType = "application/json"; // The content type
$xAuthToken = "2f266b71b8038e6"; // Your API Token, you can get your token here https://app.geniusreferrals.com/en/settings/api-access
$accountSlug = 'sandbox';

$client = new GeniusReferralsLib\GeniusReferralsClient($contentType, $xAuthToken);

// Cargando los parámetros de la sesión
$strGRAdvocateReferrerToken = $_SESSION['strGRAdvocateReferrerToken'];
$strGRCampaignSlug = $_SESSION['strGRCampaignSlug'];
$strGRReferralOriginSlug = $_SESSION['strGRReferralOriginSlug'];

// La información del Referido obtenida en el proceso de registro.
$strReferralFirstName = 'Jane';
$strReferralLastName = 'Doe';
$strReferralEmail = 'jane.doe@example.com';

// Creando el Referido, el cual es un promotor que no puede referir
$advocatesController = $client->getAdvocates();

// Preparing data needed to sent on the request
$advocateModel = new \GeniusReferralsLib\Models\Advocate();
$advocateModel->name = $strReferralFirstName;
$advocateModel->lastname = $strReferralLastName;
$advocateModel->email = $strReferralEmail;
$advocateModel->payoutThreshold = 1;
$advocateModel->canRefer = 0; // un referido no puede referir.

$newReferredAdvocate = $advocatesController->postAdvocate($accountSlug, new \GeniusReferralsLib\Models\AdvocateForm($advocateModel));

// Adding the currency to the referral
$advocatePatchForm = new \GeniusReferralsLib\Models\AdvocatePatchForm();
$advocatePatchForm->currencyCode = 'USD';

// Referral currency successfully added
$advocatesController->patchAdvocate($accountSlug, $newReferredAdvocate->token, $advocatePatchForm);

//Creating the referral object to connect the referral and the advocate
$referralsController = $client->getReferrals();

// Preparing data needed to create the referral
$referralModel = new \GeniusReferralsLib\Models\Referral();
$referralModel->campaignSlug = $strGRCampaignSlug;
$referralModel->httpReferer = $_SERVER['HTTP_REFERER'];
$referralModel->referralOriginSlug = $strGRReferralOriginSlug;
$referralModel->referredAdvocateToken = $newReferredAdvocate->token;

$referral = $referralsController->postReferral($accountSlug, $strGRAdvocateReferrerToken, new \GeniusReferralsLib\Models\ReferralForm($referralModel));

if(isset($referral->id)){
    // Referral successfully created
}
else{
    // handle errors
}