Uploading files using API and JWT token

Hello, 

Can you send me the code you are running to upload files? 

Thanks, 

Alex, Box Developer Advocate

Hello, this is my second account.

This is my code:

$json = file_get_contents(ROOT_SITE_DIR.'/data/boxComConfigs/new_box.json');
$config = json_decode($json);

$private_key = $config->boxAppSettings->appAuth->privateKey;
$passphrase = $config->boxAppSettings->appAuth->passphrase;
$key = openssl_pkey_get_private($private_key, $passphrase);


$authenticationUrl = 'https://api.box.com/oauth2/token';

$claims = [
    'iss' => $config->boxAppSettings->clientID,
    'sub' => $config->enterpriseID,
    'box_sub_type' => 'enterprise',
    'aud' => $authenticationUrl,
    'jti' => base64_encode(random_bytes(64)),
    'exp' => time() + 45,
    'kid' => $config->boxAppSettings->appAuth->publicKeyID
];


$assertion = JWT::encode($claims, $key, 'RS512');


$params = [
    'grant_type' => 'urn:ietf:params:oauth:grant-type:jwt-bearer',
    'assertion' => $assertion,
    'client_id' => $config->boxAppSettings->clientID,
    'client_secret' => $config->boxAppSettings->clientSecret
];
$client = new Client();



$response = $client->request('POST', $authenticationUrl, [
    'form_params' => $params
]);



$data = $response->getBody()->getContents();
$token = json_decode($data)->access_token;


//update file
//$url = "https://upload.box.com/api/2.0/files/807022067600/content";

// upload file
$url = "https://upload.box.com/api/2.0/files/content";

if (isset($_POST['btnUpload'])) {


    $file_upload = $_FILES['file']['tmp_name'];



    $json = json_encode(array(
        'name' => $_FILES['file']['name'],
        'parent' => array('id' => 0),
        "shared_link" => array(
                 "access" => "open"
        )
    ));

    $filePath = $_FILES['file']['tmp_name'];
    $fileName = $_FILES['file']['name'];
    $fileType = $_FILES['file']['type'];

    $fields = array(
        'attributes' => $json,
    );



    try {
        $ch = curl_init();


        curl_setopt($ch,CURLOPT_URL, $url);




        curl_setopt($ch, CURLOPT_HTTPHEADER, array(
            'Authorization: Bearer '.$token,
            'Content-Type: multipart/form-data'
        ));

        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $fields);

        $response = curl_exec($ch);
        curl_close($ch);


    } catch (Exception $e) {
        $response = $e->getMessage();
        print_r($response);

    }