How to use Stripe API with PHP

1# Install the Stripe PHP SDK
2composer require stripe/stripe-php
3
4# For Laravel, also install:
5# composer require laravel/cashier (for subscriptions)
6# Or use stripe-php directly for custom integrations

1<?php
2require_once 'vendor/autoload.php';
3
4// Load from environment variable
5\Stripe\Stripe::setApiKey(getenv('STRIPE_SECRET_KEY'));
6\Stripe\Stripe::setApiVersion('2024-12-18.acacia');
7
8// Verify configuration
9if (!getenv('STRIPE_SECRET_KEY')) {
10    die('Error: STRIPE_SECRET_KEY not set');
11}
12
13echo 'Stripe configured with API version: ' . \Stripe\Stripe::$apiVersion;
14?>

1<?php
2require_once 'vendor/autoload.php';
3\Stripe\Stripe::setApiKey(getenv('STRIPE_SECRET_KEY'));
4
5header('Content-Type: application/json');
6$input = json_decode(file_get_contents('php://input'), true);
7
8try {
9    // Create a customer
10    $customer = \Stripe\Customer::create([
11        'email' => $input['email'],
12        'name' => $input['name'] ?? null,
13        'metadata' => [
14            'app_user_id' => $input['userId'] ?? '',
15        ],
16    ]);
17
18    // Create a PaymentIntent
19    $paymentIntent = \Stripe\PaymentIntent::create([
20        'amount' => $input['amount'], // Amount in cents
21        'currency' => 'usd',
22        'customer' => $customer->id,
23        'automatic_payment_methods' => ['enabled' => true],
24        'metadata' => [
25            'order_id' => $input['orderId'] ?? '',
26        ],
27    ]);
28
29    echo json_encode([
30        'customerId' => $customer->id,
31        'clientSecret' => $paymentIntent->client_secret,
32    ]);
33} catch (\Stripe\Exception\ApiErrorException $e) {
34    http_response_code(400);
35    echo json_encode(['error' => $e->getMessage()]);
36}
37?>

1<?php
2require_once 'vendor/autoload.php';
3
4\Stripe\Stripe::setApiKey(getenv('STRIPE_SECRET_KEY'));
5$webhookSecret = getenv('STRIPE_WEBHOOK_SECRET');
6
7// Get the raw POST body (do NOT use json_decode first)
8$payload = file_get_contents('php://input');
9$sigHeader = $_SERVER['HTTP_STRIPE_SIGNATURE'] ?? '';
10
11try {
12    $event = \Stripe\Webhook::constructEvent(
13        $payload,
14        $sigHeader,
15        $webhookSecret
16    );
17} catch (\UnexpectedValueException $e) {
18    http_response_code(400);
19    echo 'Invalid payload';
20    exit;
21} catch (\Stripe\Exception\SignatureVerificationException $e) {
22    http_response_code(400);
23    echo 'Invalid signature';
24    exit;
25}
26
27// Handle the event
28switch ($event->type) {
29    case 'payment_intent.succeeded':
30        $intent = $event->data->object;
31        error_log("Payment succeeded: {$intent->id}");
32        // Fulfill the order
33        break;
34    case 'payment_intent.payment_failed':
35        $intent = $event->data->object;
36        error_log("Payment failed: {$intent->id}");
37        break;
38    default:
39        error_log("Unhandled event: {$event->type}");
40}
41
42http_response_code(200);
43echo json_encode(['received' => true]);
44?>

1<?php
2try {
3    $paymentIntent = \Stripe\PaymentIntent::create([
4        'amount' => 5000,
5        'currency' => 'usd',
6    ]);
7} catch (\Stripe\Exception\CardException $e) {
8    // Card was declined
9    http_response_code(402);
10    echo json_encode([
11        'error' => $e->getMessage(),
12        'code' => $e->getStripeCode(),
13        'decline_code' => $e->getDeclineCode(),
14    ]);
15} catch (\Stripe\Exception\RateLimitException $e) {
16    http_response_code(429);
17    echo json_encode(['error' => 'Too many requests. Please retry.']);
18} catch (\Stripe\Exception\InvalidRequestException $e) {
19    http_response_code(400);
20    echo json_encode(['error' => $e->getMessage()]);
21} catch (\Stripe\Exception\AuthenticationException $e) {
22    http_response_code(500);
23    echo json_encode(['error' => 'Payment configuration error.']);
24} catch (\Stripe\Exception\ApiConnectionException $e) {
25    http_response_code(503);
26    echo json_encode(['error' => 'Payment service unavailable.']);
27} catch (\Stripe\Exception\ApiErrorException $e) {
28    http_response_code(500);
29    echo json_encode(['error' => 'Unexpected payment error.']);
30}
31?>

1<?php
2// app/Http/Controllers/StripeController.php
3namespace App\Http\Controllers;
4
5use Illuminate\Http\Request;
6use Stripe\Stripe;
7use Stripe\PaymentIntent;
8use Stripe\Customer;
9use Stripe\Webhook;
10
11class StripeController extends Controller
12{
13    public function __construct()
14    {
15        Stripe::setApiKey(env('STRIPE_SECRET_KEY'));
16    }
17
18    public function createPaymentIntent(Request $request)
19    {
20        try {
21            $intent = PaymentIntent::create([
22                'amount' => $request->input('amount'),
23                'currency' => 'usd',
24                'automatic_payment_methods' => ['enabled' => true],
25            ]);
26            return response()->json(['clientSecret' => $intent->client_secret]);
27        } catch (\Stripe\Exception\ApiErrorException $e) {
28            return response()->json(['error' => $e->getMessage()], 400);
29        }
30    }
31
32    public function webhook(Request $request)
33    {
34        $payload = $request->getContent();
35        $sig = $request->header('Stripe-Signature');
36        try {
37            $event = Webhook::constructEvent(
38                $payload, $sig, env('STRIPE_WEBHOOK_SECRET')
39            );
40        } catch (\Exception $e) {
41            return response('Invalid', 400);
42        }
43
44        if ($event->type === 'payment_intent.succeeded') {
45            \Log::info('Payment: ' . $event->data->object->id);
46        }
47
48        return response()->json(['received' => true]);
49    }
50}
51?>