Legacy application modernization

Most legacy systems aren't broken. They take orders, run payroll or book patients every day. The problem is that nobody wants to touch them. The PHP version is out of support, the framework stopped getting updates years ago, and every change risks breaking something nobody remembers building. I modernize legacy PHP applications step by step, on your existing database, while the business keeps running on them.

I'm Umer Farooq, a senior full-stack developer with 9+ years of experience in PHP (Laravel, CodeIgniter, CakePHP), Node.js, React, Next.js, Angular, Vue, MySQL and Postgres. A large part of my work is taking over older codebases and moving them forward without a risky relaunch.

Who this is for

This service fits you if:

• Your app runs on PHP 5.x, 7.x or an early PHP 8 release, and your host keeps warning you about it.
• It's built on an old framework version, or on custom PHP with no framework at all.
• Small changes take far too long, and every release breaks something else.
• The original developer has left, and the documentation lives in their head.
• You've been quoted a full rewrite with a big launch day, and that feels like too much risk for a system the business can't live without.

Why old PHP versions are a real risk

PHP versions get two years of active support and then two years of security fixes only. After that, they get nothing. According to php.net, PHP 8.1 and every older version, including all of PHP 7 and PHP 5, no longer receive security fixes. PHP 8.2 stops getting them on 31 December 2026. PHP 8.4 is supported with security fixes until the end of 2028, and PHP 8.5 until the end of 2029.

Running an unsupported version means known security holes stay open. Hosting providers eventually drop old versions, and modern packages stop installing on them. Usually the framework is stuck too. An old Laravel, CodeIgniter or CakePHP version may not even run on a supported PHP release, so you can't upgrade one without the other.

Upgrade, refactor or rebuild?

There's no single answer, and anyone who gives you one before reading your code is guessing. These are the options I compare:

For CodeIgniter 3 apps, the rebuild route usually wins. I've written about that on its own page: CodeIgniter to Laravel migration.

How I modernize a legacy PHP application

1. Audit first. I read the code and the database: entry points, framework version, PHP version, cron jobs, payment and email integrations, raw SQL, and anything that only works because of a server setting. You get a written report of what exists, what's risky, and which route I'd take.
2. Get it running somewhere safe. I set up a copy of the app on a staging server or locally, on the target PHP version. This shows exactly what breaks before anything touches production.
3. Put tests around what matters. Before changing behaviour, I add tests for the flows that make money or would cause support tickets if they broke: checkout, login, invoicing, reports.
4. Fix the PHP 8 blockers. Removed functions such as the old mysql_* extension, each() and create_function(), stricter type handling, and deprecations like dynamic properties in PHP 8.2. Tools like Rector and static analysis speed this up, and tests confirm the result.
5. Upgrade or replace the framework. Either step through the framework's own upgrade path, or build the new version next to the old one and move traffic over one module at a time.
6. Keep the database live. The new code works against your current schema, so there's no risky data migration on day one. Schema clean-up comes last, once the old code no longer depends on it.
7. Deploy with a way back. Each release ships with a rollback path, whether you're on shared hosting, cPanel, a VPS or the cloud.

What you get

• A written audit with a recommended route, before any code changes.
• The app running on a supported PHP version.
• Tests around your critical flows, so future changes are safer.
• An upgraded or rebuilt framework layer, delivered in small, reversible steps.
• Old URLs kept working, with 301 redirects where anything has to change.
• Handover notes, so your next developer isn't starting from zero.

Proof from past work

• Farabi Clinics ERP: a system for a multi-branch clinic operation covering bookings, insurance and pharmacy. Its earlier-generation API needed a full rewrite to support multi-tenant, bilingual, multi-currency operation. I've contributed substantially to both the legacy API and its V2 rewrite in Laravel, and to the Next.js admin dashboard. Read the Farabi Clinics ERP case study
• NitroTickets: from 2018 to Oct 2026, I worked on a CodeIgniter-era ticketing platform and was the primary developer on its Laravel rebuild, on the live production database. Read the NitroTickets case study

Working with me directly

You work with me, not an account manager. I read your code, write the plan, do the work and answer your messages. I work remotely and can fit into your current hosting and your existing team.

Book a quick call

Tell me what your system does, what it runs on and what's worrying you about it. In a short call, we can work out whether an upgrade, a refactor or a step-by-step rebuild makes sense, and where to start.

Book a 30-minute call or send me a message.