Slim 3 upload image to server path - php

Question

Hi im new in slim 3 framework (Api for mobile) i would like to know how to upload an image to a server, e seacrh for examples didnt find much, this is the code i have but it does not work.Any help would be great thanks.
$app->post('/photo', function ($request, $response) use ($app) {
$files = $request->getUploadedFiles();
if (empty($files['newfile'])) {
throw new Exception('Expected a newfile');
}
$newfile = $files['newfile'];
if ($newfile->getError() === UPLOAD_ERR_OK) {
$uploadFileName = $newfile->getClientFilename();
$newfile->moveTo("../photos/");
}
});
The error it gives me
<h1>Slim Application Error</h1>
<p>The application could not run because of the following error:</p>
<h2>Details</h2>
<div>
<strong>Type:</strong> Error
</div>
<div>
<strong>Message:</strong> Call to a member function getError() on null
</div>
<div>
<strong>File:</strong> /home/bitstudi/public_html/api_pricegram/public/index.php
</div>
<div>
<strong>Line:</strong> 155
</div>
<h2>Trace</h2>
#0 [internal function]: Closure->{closure}(Object(Slim\Http\Request), Object(Slim\Http\Response), Array)
#1 /home/bitstudi/public_html/api_pricegram/vendor/slim/slim/Slim/Handlers/Strategies/RequestResponse.php(41): call_user_func(Object(Closure), Object(Slim\Http\Request), Object(Slim\Http\Response), Array)
#2 /home/bitstudi/public_html/api_pricegram/vendor/slim/slim/Slim/Route.php(344): Slim\Handlers\Strategies\RequestResponse->__invoke(Object(Closure), Object(Slim\Http\Request), Object(Slim\Http\Response), Array)
#3 /home/bitstudi/public_html/api_pricegram/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(122): Slim\Route->__invoke(Object(Slim\Http\Request), Object(Slim\Http\Response))
#4 /home/bitstudi/public_html/api_pricegram/vendor/slim/slim/Slim/Route.php(316): Slim\Route->callMiddlewareStack(Object(Slim\Http\Request), Object(Slim\Http\Response))
#5 /home/bitstudi/public_html/api_pricegram/vendor/slim/slim/Slim/App.php(476): Slim\Route->run(Object(Slim\Http\Request), Object(Slim\Http\Response))
#6 /home/bitstudi/public_html/api_pricegram/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(122): Slim\App->__invoke(Object(Slim\Http\Request), Object(Slim\Http\Response))
#7 /home/bitstudi/public_html/api_pricegram/vendor/slim/slim/Slim/App.php(370): Slim\App->callMiddlewareStack(Object(Slim\Http\Request), Object(Slim\Http\Response))
#8 /home/bitstudi/public_html/api_pricegram/vendor/slim/slim/Slim/App.php(295): Slim\App->process(Object(Slim\Http\Request), Object(Slim\Http\Response))
#9 /home/bitstudi/public_html/api_pricegram/public/index.php(161): Slim\App->run()
#10 {main}

Answer 1

i solved like this
use \Psr\Http\Message\ServerRequestInterface as Request;
use \Psr\Http\Message\ResponseInterface as Response;
use Slim\Http\UploadedFile;
require '../vendor/autoload.php';
$app = new \Slim\App([
'settings' => [
'displayErrorDetails' => true
]
]);
$container = $app->getContainer();
$container['upload_directory'] ='../photos/';
$app->post('/photo', function (Request $request, Response $response) use ($app) {
$directory = $this->get('upload_directory');
$uploadedFiles = $request->getUploadedFiles();
$uploadedFile = $uploadedFiles['picture'];
if($uploadedFile->getError() === UPLOAD_ERR_OK) {
$filename = moveUploadedFile($directory, $uploadedFile);
$response->write('uploaded ' . $filename . '<br/>');
}
});
function moveUploadedFile($directory, UploadedFile $uploadedFile){
$extension = pathinfo($uploadedFile->getClientFilename(),
PATHINFO_EXTENSION);
$basename = bin2hex(random_bytes(8));
$filename = sprintf('%s.%0.8s', $basename, $extension);
$uploadedFile->moveTo($directory . DIRECTORY_SEPARATOR . $filename);
return $filename;
}
$app->run();