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

Сервис "Экспресс Платежи"

<p>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.</p>
<p>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 <strong>Express Payments</strong> menu.</p>
<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>
<p>The plugin creates and uses the following WordPress database tables:<br />
* <code>{$wpdb->prefix}expresspay_options</code> — payment methods and their parameters<br />
* <code>{$wpdb->prefix}expresspay_invoices</code> — created invoices and their statuses</p>
<h4>Notification Endpoint</h4>
<p>For receiving payment notifications, the plugin uses WordPress AJAX endpoint:<br />
    /wp-admin/admin-ajax.php?action=receive_notification&type_id=</p>
<h3>Configuration</h3>
<ol>
<li>Go to WordPress admin panel <span aria-hidden="true" class="wp-exclude-emoji">→</span> <strong>Express Payments</strong> <span aria-hidden="true" class="wp-exclude-emoji">→</span> <strong>Settings</strong></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><strong>Name</strong> — Display name of payment method (e.g., “ExpressPay (ERIP)”)</li>
<li><strong>Type</strong> — Payment method type: <code>erip</code>, <code>card</code>, or <code>epos</code></li>
<li><strong>Token</strong> — API access token from Express Pay service</li>
<li><strong>Service ID</strong> — Service number in Express Pay system</li>
<li><strong>Secret Word</strong> — Secret key for signing payment requests</li>
<li><strong>Secret Word for Notification</strong> — Secret key for verifying incoming notifications</li>
</ul>
<h4>API URLs</h4>
<ul>
<li><strong>API URL</strong> — Production API base URL (e.g., <code>https://api.express-pay.by/v1/</code>)</li>
<li><strong>Sandbox URL</strong> — Sandbox API base URL (e.g., <code>https://sandbox-api.express-pay.by/v1/</code>)</li>
<li><strong>Test Mode</strong> — Enable/disable sandbox mode for testing</li>
</ul>
<h4>Payment Options</h4>
<ul>
<li><strong>ERIP Path</strong> — Path in ERIP tree shown to users</li>
<li><strong>Show QR Code</strong> — Display QR code for ERIP/E-POS payments</li>
<li><strong>Use Signature for Notification</strong> — Verify incoming notification signatures</li>
<li><strong>Can Change Name</strong> — Allow customers to modify name during payment</li>
<li><strong>Can Change Address</strong> — Allow customers to modify address during payment</li>
<li><strong>Can Change Amount</strong> — Allow customers to modify amount during payment</li>
<li><strong>Send Email</strong> — Send payment notifications via email</li>
<li><strong>Send SMS</strong> — Send payment notifications via SMS</li>
</ul>
<h4>E-POS Settings</h4>
<ul>
<li><strong>Service Provider Code</strong> — E-POS provider code</li>
<li><strong>Service E-POS Code</strong> — E-POS service code</li>
</ul>
<h3>Usage</h3>
<h4>Adding Payment Form to Page</h4>
<p>Create or edit a page and add the payment form shortcode:</p>
<pre><code>[expresspay_payment amount=25.5 edit_amount=true info="Payment description"]
</code></pre>
<h4>Shortcode Parameters</h4>
<ul>
<li><strong>amount</strong> — Payment amount (e.g., <code>25.5</code>)</li>
<li><strong>edit_amount</strong> — Allow customer to change amount (e.g., <code>true</code> or <code>false</code>)</li>
<li><strong>info</strong> — Payment description/purpose</li>
<li><strong>method_id</strong> — 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 <strong>Test Mode</strong> in payment method settings</li>
<li>Verify that <strong>Sandbox URL</strong> 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>
<p>For installation and configuration instructions, visit:<br />
<a href="https://express-pay.by/cms-extensions/wordpress" rel="nofollow ugc">Express Pay CMS Extensions</a></p>
<p>Watch video tutorials on our YouTube channel:<br />
<a href="https://www.youtube.com/c/express-pay-by" rel="nofollow ugc">Express Pay YouTube</a></p>
<h3>License</h3>
<p>This plugin code and documentation is proprietary and provided by Express Pay service.<br />
All rights reserved. Please refer to LICENSE file in plugin directory for details.</p>
<h3>Third-Party Services</h3>
<p>This plugin connects to Express Pay service for payment processing:<br />
* Service URL: https://express-pay.by/<br />
* API Documentation: https://express-pay.by/docs/api/v1<br />
* Privacy Policy: https://express-pay.by/docs</p>
<p>By using this plugin, you agree to Express Pay Terms of Service.</p>


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