Legacy Systems

Legacy System Support & Modernization.
Old platforms. Expert hands.

We have worked on legacy systems of every kind since 2003: CMS and ecommerce installs, community platforms, old frameworks, databases and custom applications. We know how they were built, how they age, and how to keep them running while you decide what comes next.

20+
Years On These Platforms
2003
Engineering Since
100+
Platforms Worked On
48h
Triage Turnaround
What We Support

The legacy systems we work on

If it is business-critical and hard to change, we have probably worked on something like it. From old CMS installs to custom-built applications, older versions are our daily work.

📰

CMS & Publishing

WordPress, Joomla, Drupal and similar systems: old core versions, abandoned plugins and themes, and custom modules that block an upgrade.

🛒

Ecommerce & Marketplaces

Magento 1 and 2, WooCommerce, OpenCart, PrestaShop and custom shops. Extension conflicts, checkout and payment upgrades, and platform migrations. See our Magento 1 support.

👥

Community & Social Platforms

SocialEngine, PHPfox and MetaFox, forums and member-network scripts, including installs with years of custom plugins and themes.

🏗️

Legacy PHP Frameworks

CodeIgniter, CakePHP, Zend Framework, Symfony 1, Yii 1 and in-house frameworks: end-of-life versions that need upgrading or replacing.

📄

Custom & Template-Driven Apps

Plain PHP, procedural code and Smarty-template systems, often with no documentation and no original developer.

🗄️

Databases & Data

Old MySQL and MariaDB versions, schemas without keys, slow queries, data cleanups and moves to a supported database. See legacy database optimization.

🖥️

Servers & Hosting Stacks

Outdated PHP, web server and control-panel setups: moving to supported runtimes, fixing TLS and SSL problems, and migrating between servers.

🔌

Integrations & APIs

Payment gateways, shipping, CRM and accounting links, and old SOAP or XML feeds that have to keep working through an upgrade.

🎨

Front End & Scripts

Older themes, jQuery-era JavaScript and front-end code that is tied to the back end and breaks when the platform changes.

Not on the list? If it runs on the web and it is hard to change, send it over. We will tell you honestly whether it is something we can take on.

What We Do

Keep it running. Make it safe. Move it forward.

🛠️

Ongoing Maintenance

Bug fixes, small changes and support for systems that still earn money but no longer have a developer behind them.

🔒

Security Patching

Closing known vulnerabilities, hardening configuration and cleaning up compromised code on outdated software.

⬆️

PHP & Version Upgrades

Moving systems off unsupported PHP and platform versions, with the custom code adapted to match.

🔄

Migration

Moving data, users and content to a newer version or a different platform, with the path planned to limit downtime.

📚

Documentation

Turning an undocumented codebase into something your team and the next developer can actually understand.

⚡

Performance Recovery

Finding why an aging system has slowed down and fixing the cause, not just the symptom.

Before vs After

What changes when a legacy system is looked after

Before - The Risk
  • Running on unsupported PHP or platform versions
  • Nobody fully understands the custom code
  • Updates are avoided because they might break things
  • Known security holes left open
  • The original developer is gone
  • Every change feels like a gamble
After - The Control
  • Supported, patched software underneath
  • Codebase documented and understood
  • Changes tested before they reach production
  • Known vulnerabilities closed
  • A developer team that knows the system
  • A clear plan for what comes next
How We Work

Our approach to systems nobody wants to touch

01

Audit First

We review the code, the database and the server before changing anything, so we know what we are dealing with and what is at risk.

02

Stabilize

We fix what is urgent and unsafe first. The system has to be stable and backed up before it can be improved.

03

Honest Assessment

You get a written picture of what we found: what can stay, what should be upgraded, what should be rebuilt, and what each option costs.

04

Modernize or Migrate

We carry out the option you choose, in tested steps, with your data and custom functionality preserved.

05

Document & Hand Over

You receive documentation of the system as it now stands, and we can stay on for ongoing support if you want it.

Questions

Legacy system FAQ

What counts as a legacy system?

Any production system that still runs your business but is hard to change: an old platform version, an unsupported PHP version, an abandoned plugin or theme stack, or custom code that nobody on your team fully understands anymore.

Which legacy platforms do you support?

CMS and publishing systems (WordPress, Joomla, Drupal), ecommerce platforms (Magento including Magento 1, WooCommerce, OpenCart, PrestaShop), community platforms (SocialEngine, PHPfox, MetaFox), older PHP frameworks, custom and Smarty-template applications, and the databases, servers and integrations around them. Older versions of all of these are our daily work.

Can you work on a system with no documentation and no original developer?

Yes. We read the code, trace how it behaves, and document what we find before changing anything. Inherited and undocumented systems are a large part of our work.

Should we upgrade, migrate or rebuild?

We assess first and then recommend the option that fits your system and budget. Sometimes that is stabilising and keeping what you have, sometimes a version upgrade, sometimes a migration to a newer platform. We recommend the right path, not the most expensive one.

Can you fix security problems on an outdated platform?

Yes. We patch known vulnerabilities, harden configuration, and clean up compromised code, and we plan PHP version upgrades so the platform is no longer running on unsupported software.

Guides

Legacy modernisation guides

Practical write-ups from our engineers on upgrading, testing, migrating and documenting old systems.

Legacy PHP Modernisation Roadmap: What to Do and in What Order

Most legacy PHP systems do not need a rewrite. They need the work done in the right order. Here is the sequence we follow, and why each step comes where it does.

Upgrading Legacy PHP from 5.6 or 7.x to PHP 8: What Breaks and How to Find It

Removed functions, constructors that silently stop running, comparisons that flip. What actually breaks between PHP 5.6 and PHP 8, and how to find it before production does.

Modernising a Smarty-Template PHP System Without Rewriting It

Old Smarty versions hold applications back on old PHP. Here is how to upgrade Smarty, turn on output escaping, and decide whether to keep the templates at all.

Rewrite or Modernise? How to Decide for a Legacy PHP Application

Starting again feels clean, and usually costs more than it saves. When a rewrite is the right call, when it is not, and a cheap test to find out.

Adding Tests to Legacy PHP Code Without Rewriting It First

Legacy code is code without tests, and you cannot change it safely without them. How to build a safety net under tangled PHP without rewriting it first.

Running Old and New PHP Side by Side: Routing, Sessions and Rollback

The safest way to replace a legacy system is to grow the new one next to it. Routing, shared logins, database ownership and rollback, in practice.

Documenting an Undocumented PHP Codebase: What to Write and How to Find It Out

Do not document everything. Document what the next person needs at 2am. How to learn what an unexplained codebase does, and what is worth writing down.

Running on an old system?
Let's look at it.

Start with an honest technical assessment. We'll tell you what you have, what it needs, and what your options are.

No sales pitch. Honest assessment. Clear roadmap.