<?php
// This can be your index.php, for example.
require __DIR__ . '/vendor/autoload.php';

// At this point, you can start using the SDK. Keep reading!

// Read the API Key value from the environment, using 
$wtClient = WeTransfer\Client::setApiKey(getenv('WT_API_KEY'));

// Or include it directly on your source code.
// Be careful not sharing your API key, it is suppose to be private.
$WT_API_KEY='your private key goes here';
$wtClient = WeTransfer\Client::setApiKey($WT_API_KEY);

$name = $_POST['transfer_name'];
$description = $_POST['transfer_description'];

$transfer = WeTransfer\Transfer::create($name, $description);

use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\JsonResponse;

class SampleController extends Controller
{
    public function indexAction(Request $request) {
        $name = $request->request->get('transfer_name');
        $description = $request->request->get('transfer_description');
        $transfer = WeTransfer\Transfer::create($name, $description);

        // You will need to save the transfer->getId() value to access the transfer in the future.
        // Use a data base, the session or return it to the client
        $entityManager = $this->getDoctrine()->getManager();
        $entityManager->persist($transfer);
        $entityManager->flush();

        return new JsonResponse($transfer);
    }

}

WeTransfer\Transfer::addLinks($transfer, [
  [
    'url' => 'https://en.wikipedia.org/wiki/Japan',
    'meta' => [
      'title' => 'Japan'
    ]
  ]
]);

WeTransfer\Transfer::addFiles($transfer, [
  [
    'filename' => 'Japan-01.jpg',
    'filesize' => 13370099
  ]
]);

foreach($transfer->getFiles() as $file) {
  WeTransfer\File::upload($file, fopen(realpath('./path/to/your/files.jpg'), 'r'));
}

// src/Controller/LuckyController.php
namespace App\Controller;

use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Routing\Annotation\Route;

class FilesController
{
    /**
     * @Route("/create-upload-url", name="app_create_upload_url", methods={"POST"})
     */
    public function createUploadUrl(Request $request)
    {
        $data = json_decode(
            $request->getContent(),
            true
        );

        $uploadUrl = WeTransfer\File::createUploadUrl(
            $data['file_id'],
            $data['multipart_upload_id'],
            $data['part_number']
        );

        return new JsonResponse(
            $uploadUrl,
            JsonResponse::HTTP_CREATED
        );
    }
}