LiqPay is the most widely used payment provider in Ukraine. Connecting it to OpenCart takes 30–60 minutes once you know the order of operations.
Step 1: register with LiqPay
Sign up at liqpay.ua and create a store under the business section. You will receive a public_key and a private_key — keep them safe.
Step 2: install the module
Download the official module from GitHub (liqpay/plugin-opencart). Unpack it and copy the files into your OpenCart directory:
catalog/model/payment/liqpay.php catalog/controller/payment/liqpay.php admin/model/payment/liqpay.php admin/controller/payment/liqpay.php
In the admin: Extensions → Extensions → Payment → LiqPay → Install → Edit.
Step 3: configuration
Enter the public and private keys. Set the server URL (callback):
https://yourstore.com/index.php?route=payment/liqpay/callback
Step 4: security — verify the signature
LiqPay signs its callback requests. The module verifies that signature:
$sign = base64_encode(sha1($private_key . $data . $private_key, true));
if ($sign !== $_POST["signature"]) { die("Invalid signature"); }
Step 5: testing
In sandbox mode use the test card 4242 4242 4242 4242. Confirm that a successful payment changes the order status automatically.
Want a hand? Order LiqPay integration for OpenCart.
