ExpressPay Payment Module for WordPress

Express Pay Payment Module is a WordPress plugin that integrates your website with Express Pay service, allowing you to accept payments through ERIP, bank cards, and E-POS methods.

The plugin adds a payment form to your site using a shortcode and provides payment method settings and invoice management through the WordPress admin panel in the Express Payments menu.

Features

Add multiple payment methods in admin panel (ERIP, card, E-POS types)

Display payment form on site using shortcode with customizable amount and payment description

Generate invoice parameters and signatures (HMAC-SHA1) for Express Pay API v1

Test mode support using sandbox environment and test credentials

Incoming notification signature verification

Allow customers to modify name, address, and amount during payment (optional)

Send notifications to customers via email/SMS (optional)

Display QR code for ERIP/E-POS payments

Invoice list and payment status management in admin panel

Support for multiple payment methods on one site

Database Tables The plugin creates and uses the following WordPress database tables:

* {$wpdb->prefix}expresspay_options — payment methods and their parameters

* {$wpdb->prefix}expresspay_invoices — created invoices and their statuses