5250 to Web UI

Reference implementation: replacing 5250 green-screen interfaces with modern web UIs.

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🎯 Purpose

Thousands of IBM i (AS400) applications still use 5250 green-screen terminals. This repository demonstrates how to:

• Extract business logic from RPG subfile programs
• Build modern web interfaces that replicate the functionality
• Run both systems in parallel during migration

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📁 Structure

5250-to-web-ui/
├── src/
│   ├── RPG/                   # RPG programs (green screen logic)
│   │   ├── CustomerInquiry.rpgle
│   │   └── OrderEntry.rpgle
│   ├── PHP/
│   │   ├── Controller/        # Web controllers
│   │   ├── Service/           # Screen mapping service
│   │   └── View/              # HTML views
├── tests/
│   └── PHP/                   # PHP unit tests
├── docker/
└── README.md

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👤 Author

Joshua — Neuraldev LLC GitHub: @joalvarezweingartt