My SaaS platform is currently written in PHP with no framework support. As the codebase grows, small bugs and performance hiccups are becoming harder to track, so I want the entire application ported to CodeIgniter. The goal is a cleaner, more maintainable structure that runs reliably on shared and VPS environments without changing the core behaviour my customers already rely on. What I need from you • Analyse the existing codebase, map its modules, and propose an equivalent CodeIgniter architecture. • Rebuild the application inside CodeIgniter, keeping every existing screen, endpoint, and process intact. • Refactor common utilities into controllers, models, and views, following CodeIgniter best practices. • Thoroughly test the migrated app so that all current functionality works exactly as it does today. • Hand over the full CodeIgniter project with installation instructions and a concise migration report. Acceptance criteria 1. Application installs through CodeIgniter’s standard process with no fatal errors. 2. All existing user flows (login, billing, data entry, reports) behave identically to production. 3. No PHP warnings or notices appear in error logs during normal use. 4. Clear documentation covers environment setup, deployment, and a summary of major code changes. I’ll give you access to the current repository, database schema, and a staging server to validate the migration. Let me know your estimated timeline and any questions about the current stack.