PHP SDK

composer require payrexx/payrexx

<?php
use FlowAlpPay\FlowAlpPay;

$client = new FlowAlpPay(
    getenv('FLOWALP_TENANT'),          // instance name, e.g. demo-shop
    getenv('FLOWALP_API_SECRET'),      // API secret from the dashboard
    FlowAlpPay::DEFAULT_COMMUNICATION_HANDLER,
    'pay.flowalp.com',                 // platform domain
    '1.16'                             // recommended API version
);

<?php
use FlowAlpPay\Models\Request\SignatureCheck;

try {
    $client->getOne(new SignatureCheck());
    // Instance name and API secret are valid
} catch (\FlowAlpPay\FlowAlpPayException $e) {
    // Wrong instance name or API secret
}

<?php
use FlowAlpPay\Models\Request\Gateway;

$gateway = new Gateway();
$gateway->setAmount(8925);            // CHF 89.25 in minor units
$gateway->setCurrency('CHF');
$gateway->setReferenceId('ORDER-975382');
$gateway->setSuccessRedirectUrl('https://merchant.example/success');
$gateway->setFailedRedirectUrl('https://merchant.example/failed');
$gateway->setCancelRedirectUrl('https://merchant.example/cancel');

$createdGateway = $client->create($gateway);

// Send the customer to the hosted payment page
$paymentPageUrl = $createdGateway->getLink();

<?php
use FlowAlpPay\Models\Request\Gateway;

$gateway = new Gateway();
$gateway->setId(42);

$result = $client->getOne($gateway);
$status = $result->getStatus(); // e.g. waiting, confirmed, cancelled

<?php
use FlowAlpPay\FlowAlpPayException;

try {
    $createdGateway = $client->create($gateway);
} catch (FlowAlpPayException $e) {
    // 4xx: fix credentials, instance name or request fields - do not retry blindly
    // 5xx and rate limiting: retry with exponential backoff
    error_log('FlowAlp Pay error: ' . $e->getMessage());
}