GET url varible in Slim v3.2 PHP Stripe checkout - php

Question

I cannot get a URL varible in my stripe checkout PHP slim app.
I need to be able to get a price varible from the URL to echo out into the session for the price of stripe payment. However it is just not working, I can use $_GET['price']; to echo out before it becomes a SLIM APP however when it becomes a SLIM APP it just wont work...
use Slim\Http\Request;
use Slim\Http\Response;
use Stripe\Stripe;
require 'vendor/autoload.php';
$dotenv = Dotenv\Dotenv::create(realpath('../../'));
$dotenv->load();
Stripe::setApiKey(getenv('STRIPE_SECRET_KEY'));
$db = new SQLite3('./store.db');
$db->exec("CREATE TABLE IF NOT EXISTS sessions(id INTEGER PRIMARY KEY, stripe_id TEXT, status TEXT)");
// createSession
function createSession($sessionId) {
global $db;
$stmt = $db->prepare("INSERT INTO sessions(stripe_id, status) VALUES (:id, 'pending')");
$stmt->bindValue(':id', $sessionId, SQLITE3_TEXT);
return $stmt->execute();
}
// markSessionPaid
function markSessionPaid($sessionId) {
global $db;
$stmt = $db->prepare("UPDATE sessions SET status='paid' WHERE :id = stripe_id");
$stmt->bindValue(':id', $sessionId, SQLITE3_TEXT);
return $stmt->execute();
}
// getSessionStatus
function getSessionStatus($sessionId) {
global $db;
$stmt = $db->prepare("SELECT status FROM sessions WHERE :id = stripe_id");
$stmt->bindValue(':id', $sessionId, SQLITE3_TEXT);
$result = $stmt->execute();
return $result->fetchArray()[0];
}
$app = new Slim\App;
$app->get('/', function (Request $request, Response $response, $args) {
$response->getBody()->write(file_get_contents("../../client/index.html"));
return $response;
});
$app->get('/success', function (Request $request, Response $response, $args) {
$response->getBody()->write(file_get_contents("../../client/success.html"));
return $response;
});
$app->get('/cancel', function (Request $request, Response $response, $args) {
$response->getBody()->write(file_get_contents("../../client/cancel.html"));
return $response;
});
function middleware1() {
$price = $app->request()->get('price');
};
$app->post('/create-session', 'middleware1', function(Request $request, Response $response) use ($app) {
try {
// One time payments
$session = \Stripe\Checkout\Session::create([
'payment_method_types' => ['card'],
'line_items' => [[
'name' => 'Order',
'description' => 'ORDER ID: 123456789A',
'images' => ['testimage'],
'amount' => $price,
'currency' => 'aud',
'quantity' => 1,
]],
'success_url' => 'http://localhost:4242/success?session_id={CHECKOUT_SESSION_ID}',
'cancel_url' => 'http://localhost:4242/cancel',
]);
// Subscription recurring payments
// $session = \Stripe\Checkout\Session::create([
// // 'customer' => 'cus_123',
// 'payment_method_types' => ['card'],
// 'subscription_data' => [
// 'items' => [[
// 'plan' => 'starter',
// 'quantity' => 1,
// ]],
// ],
// 'success_url' => 'http://localhost:4242/success?session_id={CHECKOUT_SESSION_ID}',
// 'cancel_url' => 'http://localhost:4242/cancel',
// ]);
createSession($session->id);
} catch (Exception $e) {
return $response->withJson($e->getJsonBody(), 400);
}
return $response->withJson($session);
});
$app->post('/webhook', function(Request $request, Response $response) use ($app) {
// You can find your endpoint's secret in your webhook settings
$endpoint_secret = getenv('STRIPE_WEBHOOK_SECRET');
$payload = $request->getBody();
$sig_header = $_SERVER['HTTP_STRIPE_SIGNATURE'];
$event = null;
try {
$event = \Stripe\Webhook::constructEvent(
$payload, $sig_header, $endpoint_secret
);
} catch(\UnexpectedValueException $e) {
// Invalid payload
http_response_code(400);
exit();
} catch(\Stripe\Exception\SignatureVerificationException $e) {
// Invalid signature
http_response_code(400);
exit();
}
// Handle the checkout.session.completed event
if ($event->type == 'checkout.session.completed') {
$session = $event->data->object;
// Fulfill the purchase...
handle_checkout_session($session);
}
return $response->withJson(['message' => 'success']);
});
$app->get('/session-status', function (Request $request, Response $response, array $args) {
$status = getSessionStatus($request->getQueryParam('session_id'));
return $response->withJson($status);
});
function handle_checkout_session($session) {
// Call out to inventory management system
// Ding in Slack
// send an email
markSessionPaid($session->id);
}
$app->run();
I've tried everything
$app->request()->get('price');
And more!
The URL looks like this www.example.com/server/php/?price=5770&orderid=y2INOqCUrEzrua1XwBMg
Any help would be greatly appreciated!

Answer 1

You cannot use $_GET in Slim since it wont work. One way to do it is since the parameters are passed in query I think you mean it like this checkout/?price=200. If so, then you can access it using this:
$queryParams = $app->request()->getQueryParams();
$price = $queryParams["price"];
This would probably work