<?php require '../src/coinPayments/coinPayments.class.php'; // test httpauth and hmac then publish to github bb // You need to set a callback URL if you want the IPN to work $callbackUrl = ''; // Create an instance of the class $CP = new \MineSQL\coinPayments(); // Set the merchant ID and secret key (can be found in account settings on CoinPayments.net) $CP->setMerchantId(''); $CP->setSecretKey(''); // Create a payment button with item name, currency, cost, custom variable, and the callback URL $form = $CP->createPayment('Test Product', 'btc', 5.0E-5, '123', $callbackUrl); // Display the button echo $form;