whalet

Whalet Payment is a comprehensive payment gateway plugin that provides secure and convenient online payment solutions for WordPress websites. Whether you’re running a simple blog with donation buttons or a full-featured WooCommerce store, Whalet makes it easy to accept payments from customers worldwide.
Key Features:
🔒 Secure Payment Processing 
* PCI DSS compliant payment infrastructure 
* SSL encryption for all transactions 
* Secure webhook verification 
* No sensitive data stored on your server
💳 Multiple Payment Methods 
* Visa, Mastercard support 
* Regional payment method variations 
* Mobile-optimized payment forms 
* One-click payment options
🛒 WooCommerce Integration 
* Native WooCommerce payment gateway 
* Seamless checkout experience 
* Order management integration 
* Automatic status updates via webhooks
⚡ Flexible Implementation 
* Shortcode support: <code>[whalet_payment]</code> 
* REST API endpoints for custom integrations 
* Extensive hooks and filters 
* Developer-friendly architecture
🌍 Multi-currency & Multi-language 
* Support for multiple currencies 
* Translations: English, Chinese (Simplified/Traditional), Japanese 
* Regional compliance features 
* Automatic currency conversion
📊 Advanced Features 
* Real-time transaction monitoring 
* Comprehensive logging system 
* Full and partial refund processing 
* Test mode for development 
* Customizable payment forms 
* Webhook handling for real-time updates
Perfect for:
<ul>
<li>E-commerce stores using WooCommerce</li>
<li>Membership sites requiring payment processing</li>
<li>Donation and fundraising websites</li>
<li>Service providers accepting online payments</li>
<li>Any WordPress site needing secure payment functionality</li>
</ul>
Security & Compliance:
<ul>
<li>PCI DSS compliant payment processing</li>
<li>SSL encryption for all transactions</li>
<li>Secure webhook verification</li>
<li>Regular security updates</li>
</ul>
<h3>Additional Information</h3>
Support: 
For technical support and documentation, visit https://www.whalet.com/support
API Documentation: 
Developer documentation is available at https://docs.whalet.com
Languages: 
The plugin is translation-ready and includes translations for: 
* English (default) 
* Chinese Simplified (zh_CN) 
* Chinese Traditional (zh_TW, zh_HK) 
* Japanese (ja)
System Requirements:
Minimum Requirements: 
* WordPress: 5.0 or higher 
* PHP: 7.4 or higher (PHP 8.0+ recommended) 
* MySQL: 5.6 or higher (MySQL 8.0+ recommended) 
* WooCommerce: 5.0 or higher (if using e-commerce features) 
* SSL Certificate: Required for live payment processing 
* Memory Limit: 128MB or higher 
* Max Execution Time: 30 seconds or higher
Recommended Environment: 
* WordPress: 6.0 or higher 
* PHP: 8.1 or higher 
* MySQL: 8.0 or higher 
* WooCommerce: 7.0 or higher 
* Memory Limit: 256MB or higher 
* HTTPS: Required for production use
Server Requirements: 
* cURL support enabled 
* OpenSSL extension 
* JSON extension 
* mbstring extension 
* Modern web server (Apache 2.4+ or Nginx 1.18+)

Whalet Payment

Secure and convenient online payment gateway for WordPress with WooCommerce integration and flexible payment solutions.

Сервис "Экспресс Платежи"

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.
<h4>Features</h4>
<ul>
<li>Add multiple payment methods in admin panel (ERIP, card, E-POS types)</li>
<li>Display payment form on site using shortcode with customizable amount and payment description</li>
<li>Generate invoice parameters and signatures (HMAC-SHA1) for Express Pay API v1</li>
<li>Test mode support using sandbox environment and test credentials</li>
<li>Incoming notification signature verification</li>
<li>Allow customers to modify name, address, and amount during payment (optional)</li>
<li>Send notifications to customers via email/SMS (optional)</li>
<li>Display QR code for ERIP/E-POS payments</li>
<li>Invoice list and payment status management in admin panel</li>
<li>Support for multiple payment methods on one site</li>
</ul>
<h4>Database Tables</h4>
The plugin creates and uses the following WordPress database tables: 
* <code>{$wpdb->prefix}expresspay_options</code> — payment methods and their parameters 
* <code>{$wpdb->prefix}expresspay_invoices</code> — created invoices and their statuses
<h4>Notification Endpoint</h4>
For receiving payment notifications, the plugin uses WordPress AJAX endpoint: 
 /wp-admin/admin-ajax.php?action=receive_notification&type_id=
<h3>Configuration</h3>
<ol>
<li>Go to WordPress admin panel → Express Payments → Settings</li>
<li>Add a new payment method by clicking “Add Payment Method”</li>
<li>Configure the following parameters:</li>
</ol>
<h4>General Settings</h4>
<ul>
<li>Name — Display name of payment method (e.g., “ExpressPay (ERIP)”)</li>
<li>Type — Payment method type: <code>erip</code>, <code>card</code>, or <code>epos</code></li>
<li>Token — API access token from Express Pay service</li>
<li>Service ID — Service number in Express Pay system</li>
<li>Secret Word — Secret key for signing payment requests</li>
<li>Secret Word for Notification — Secret key for verifying incoming notifications</li>
</ul>
<h4>API URLs</h4>
<ul>
<li>API URL — Production API base URL (e.g., <code>https://api.express-pay.by/v1/</code>)</li>
<li>Sandbox URL — Sandbox API base URL (e.g., <code>https://sandbox-api.express-pay.by/v1/</code>)</li>
<li>Test Mode — Enable/disable sandbox mode for testing</li>
</ul>
<h4>Payment Options</h4>
<ul>
<li>ERIP Path — Path in ERIP tree shown to users</li>
<li>Show QR Code — Display QR code for ERIP/E-POS payments</li>
<li>Use Signature for Notification — Verify incoming notification signatures</li>
<li>Can Change Name — Allow customers to modify name during payment</li>
<li>Can Change Address — Allow customers to modify address during payment</li>
<li>Can Change Amount — Allow customers to modify amount during payment</li>
<li>Send Email — Send payment notifications via email</li>
<li>Send SMS — Send payment notifications via SMS</li>
</ul>
<h4>E-POS Settings</h4>
<ul>
<li>Service Provider Code — E-POS provider code</li>
<li>Service E-POS Code — E-POS service code</li>
</ul>
<h3>Usage</h3>
<h4>Adding Payment Form to Page</h4>
Create or edit a page and add the payment form shortcode:
<pre><code>[expresspay_payment amount=25.5 edit_amount=true info="Payment description"]
</code></pre>
<h4>Shortcode Parameters</h4>
<ul>
<li>amount — Payment amount (e.g., <code>25.5</code>)</li>
<li>edit_amount — Allow customer to change amount (e.g., <code>true</code> or <code>false</code>)</li>
<li>info — Payment description/purpose</li>
<li>method_id — Specific payment method ID (optional, shows all if not specified)</li>
</ul>
<h4>Payment Flow</h4>
<ol>
<li>Customer visits page with payment form</li>
<li>Customer selects payment method and enters details</li>
<li>Customer submits payment</li>
<li>Plugin generates invoice parameters and signature</li>
<li>Customer is redirected to Express Pay service for payment</li>
<li>After successful payment, customer is returned to the page</li>
<li>Plugin verifies payment signature and marks invoice as paid</li>
<li>Express Pay server sends additional notification webhook</li>
</ol>
<h4>Testing in Sandbox Mode</h4>
<ol>
<li>Enable Test Mode in payment method settings</li>
<li>Verify that Sandbox URL is being used</li>
<li>Complete test payment through Express Pay sandbox environment</li>
</ol>
<h3>Requirements</h3>
<ul>
<li>WordPress 4.0 or higher</li>
<li>PHP 5.6 or higher</li>
<li>Outgoing HTTPS access to Express Pay API:
<ul>
<li>Production: <code>https://api.express-pay.by/v1/</code></li>
<li>Sandbox: <code>https://sandbox-api.express-pay.by/v1/</code></li>
</ul>
</li>
<li>Public URL accessibility for receiving webhooks (if site is behind firewall or requires authentication, webhooks will not be delivered)</li>
</ul>
<h3>Support</h3>
For installation and configuration instructions, visit: 
<a href="https://express-pay.by/cms-extensions/wordpress" rel="nofollow ugc">Express Pay CMS Extensions</a>
Watch video tutorials on our YouTube channel: 
<a href="https://www.youtube.com/c/express-pay-by" rel="nofollow ugc">Express Pay YouTube</a>
<h3>License</h3>
This plugin code and documentation is proprietary and provided by Express Pay service. 
All rights reserved. Please refer to LICENSE file in plugin directory for details.
<h3>Third-Party Services</h3>
This plugin connects to Express Pay service for payment processing: 
* Service URL: https://express-pay.by/ 
* API Documentation: https://express-pay.by/docs/api/v1 
* Privacy Policy: https://express-pay.by/docs
By using this plugin, you agree to Express Pay Terms of Service.

ExpressPay Payment Module

WordPress plugin for accepting payments through Express Pay service via ERIP, bank cards and E-POS.

Whalet Payment vs ExpressPay Payment Module