Custom PHP Development & Legacy Application Modernisation
The System That Runs Your Business Deserves Maintaining
Plenty of profitable companies run on bespoke PHP that nobody has touched in years — and rewriting it is rarely the right answer. We stabilise, upgrade and extend those systems, or replace them a piece at a time while the business keeps trading.
Inherited a PHP system nobody maintains?
What Happens to Your Business if That System Stops Working?
If the honest answer is "quite a lot", and it is running on an unsupported PHP version that nobody has deployed to in two years, then the risk is already on your books — it just has not presented an invoice yet.
Why Modernise Your Custom PHP Application?
Old Does Not Mean Worthless
Plenty of profitable companies run on bespoke PHP written years ago by someone no longer around. It works. It encodes rules the business genuinely depends on and that nobody has written down anywhere else. And it is increasingly hard to change, hard to host, and impossible to hire for.
The reflex answer is a rewrite, and it is usually the wrong one. Rewrites discard the accumulated edge cases that made the old system correct, take longer than promised, and leave you maintaining two systems in the meantime. We start by reading what you have and telling you plainly which parts are worth keeping.
- An honest audit before any recommendation
- Business rules documented as we find them
- Rewrite only where the evidence supports it
Incremental PHP Modernisation Architecture
Replace It a Piece at a Time, While It Keeps Trading
Our usual route is incremental. Get it building and deploying reproducibly. Put it under version control if it is not already. Add tests around the behaviour that matters most, so change stops being frightening. Bring PHP up to a supported version and fix what that surfaces. Only then start moving functionality — one module at a time, behind a routing layer, with the old and new running side by side until the new one has earned the traffic.
Where a full replacement genuinely is right, we build it on Laravel or Symfony so the next team has a framework to stand on. But that is a conclusion we reach with you after looking, not an opinion we arrive holding.
- Reproducible builds and deploys first
- Supported PHP version, security patched
- Strangler-pattern replacement, module by module
Four Situations We See Again and Again
If one of these describes you, it is more common than you think.
Stuck on an Old PHP Version
Running 5.6 or 7.x with no security support, and a host now charging extra for it. We upgrade incrementally and fix what the upgrade surfaces.
The Developer Has Left
No documentation, no tests, no repository history. We read the code, write down what it does, and get it into a state anyone can work on.
It Failed a Security Review
SQL injection, weak session handling, credentials in the repository. We fix findings by severity and put checks in the pipeline so they stay fixed.
It Cannot Take the Load Anymore
Queries that were fine at a tenth of the data now time out. We profile, index, cache and restructure the paths that actually hurt.
End-to-End Custom PHP Development Services
From reading unfamiliar code to running it reliably for years.
Code Audit & Assessment
A structured read of the codebase, database and infrastructure, producing a written risk register and a costed recommendation — mend, extend or replace.
Custom Application Development
New bespoke PHP where a framework or product would be the wrong fit, written to PSR standards with tests and documentation from the start.
Version Upgrades
Stepwise PHP upgrades to a supported release, with static analysis and compatibility fixes applied before anything reaches production.
Refactoring & Replatforming
Untangling business logic from presentation, introducing a framework where it earns its place, and moving functionality module by module.
Security Hardening
Injection and session fixes, dependency updates, secrets moved out of the repository, and automated scanning added to the pipeline.
Performance Engineering
Query profiling, indexing, caching layers and asset delivery — starting with the traces rather than the parts that look untidy.
Integrations & APIs
Wrapping a legacy system in a clean API so newer services can consume it, instead of everything reaching into the same database.
Hosting, CI & Support
Reproducible environments, automated deployment, monitoring, tested backups and ongoing maintenance from a team that now knows the system.
We Take On the Projects Others Decline
Inheriting unfamiliar code is a skill, and we have practised it.
Comfortable With Legacy
We do not open a codebase and immediately propose a rewrite. Reading someone else's PHP carefully is most of the job.
Straight Answers
If keeping it is cheaper than replacing it, that is what the audit will say — including when it costs us the larger project.
Cover When It Matters
A team across time zones, which matters when the system in question is the one your staff cannot work without.
Estimates That Hold
A fixed-price audit first, so the larger estimate rests on what is actually in the code rather than on hope.
Ready to get your PHP system under control?
Send us your PHP version, roughly what the system does and your biggest worry about it. You will get a straight read on risk, sequence and cost.
- An honest read on scope, sequence and cost
- A reply within one business day
- No obligation, no sales sequence