WPKJ Payment Gateway for FluentCart with Wechat is an enterprise-grade payment gateway that seamlessly integrates WeChat Pay with FluentCart. It intelligently detects user environments and automatically selects the optimal payment interface.

Key Features

Multi-Platform Payment Support
– Native Payment for PC desktop with QR codes
– H5 Payment for mobile browsers
– JSAPI Payment for WeChat in-app browsers [Not yet completed]
– Intelligent client detection
Subscription Management
– Manual renewal mode for subscription payments
– Trial period support (0-365 days)
– Flexible billing intervals (daily, weekly, monthly, yearly)
– Subscription cancellation sync with orders (configurable)
– Automatic status tracking
Comprehensive Refund System
– Automatic refunds when orders are cancelled
– Manual refund processing from admin [Not yet completed]
– Full and partial refund support [Not yet completed]
– Requires SSL certificates
– Detailed activity logging
Enterprise Security
– Dual signature support (MD5 and HMAC-SHA256)
– Signature verification for all requests
– SSL/HTTPS required
– Webhook validation
– Amount verification
– Secure API communication
Developer Friendly
– Clean PSR-4 autoloading architecture
– Comprehensive hooks and filters
– Debug logging support
– Payment status polling
– Extensive documentation

Important Notes

WeChat Pay does NOT provide a public sandbox environment. Testing must be done in production with small amounts (e.g., ¥0.01).

WeChat Pay does NOT support automatic recurring payments. Each subscription renewal requires manual customer payment.

Supported Payment Methods

Native Payment (PC QR Code)
H5 Payment (Mobile)
JSAPI Payment (WeChat Browser) [Not yet completed]

Requirements

FluentCart 1.2.0 or higher
WordPress 6.5 or higher
PHP 8.2 or higher
SSL Certificate (HTTPS) required
WeChat Pay merchant account

Architecture

Built on the proven architecture of WPKJ FluentCart Alipay Payment plugin with 65%+ code reusability, ensuring reliability and maintainability.

Support and Documentation

For comprehensive documentation, tutorials, and support:

Official Website: https://www.wpdaxue.com
Documentation: https://www.wpdaxue.com/wpkj-payment-gateway-for-fluentcart-with-wechat.html
Support Email: [email protected]

Privacy and Data

This plugin does NOT:
– Collect any user data
– Send data to third parties (except WeChat Pay for payment processing)
– Track users
– Store sensitive payment information

Payment data is transmitted securely via HTTPS directly to WeChat Pay’s servers. The plugin only stores transaction IDs and order metadata necessary for order fulfillment.

External Services

This plugin relies on external services for payment processing. Below is documentation for each external service:

Wechat Payment Gateway

Service: Wechat Payment Gateway API
What it is: Official payment processing service operated by Wechat Pay, a third-party payment service from China.
What it’s used for: Process online payments from customers using Wechat accounts
Data sent: Order ID, order amount, customer email, payment description/subject, currency, and timeout configuration
When it’s sent: When a customer initiates a payment and selects Wechat as the payment method
Data sent to: Wechat Pay servers (https://api.mch.weixin.qq.com)
WeChat Pay Service Terms: https://pay.weixin.qq.com/static/protocol/protocol_normal_v3.shtml
WeChat Pay Privacy Policy: https://pay.weixin.qq.com/static/protocol/protocol_normal_v3.shtml
Additional Info: Communication is RSA2 2048-bit encrypted. Wechat Pay returns trade status, transaction ID, and buyer information.

User Consent

Users are informed about Wechat payment processing when they select Wechat as their payment method. They accept data transmission to Wechat’s services as part of the payment process. The Wechat Pay terms and privacy policy are accessible via links above.

Credits

Developed by: WPDAXUE.COM
Framework: FluentCart Payment Gateway API
Contributors: WordPress community
Special Thanks: FluentCart team for excellent payment framework, and Wechat Pay for their robust payment solution