Legacy system migration to Laravel

Your application works, but every change is a risk. The code is years old, there are no tests, documentation is non-existent and the original developer is long gone. Adding new features costs three times what it should and bugs keep piling up.

A migration to Laravel does not mean rewriting everything at once. At Bloonde we carry out progressive migrations that modernise your system without stopping your business: module by module, with validation at every step and zero data loss.

The result is an application that is maintainable, secure and ready to scale — with the same business logic that already works, but on a solid technical foundation.

Legacy system migration to Laravel with modern architecture

The problem it solves

Legacy systems built with PHP vanilla, CodeIgniter, CakePHP or WordPress with custom plugins share a common pattern: they work, but they are fragile. The code is tightly coupled, there is no separation of concerns, SQL queries are inline and security depends on manual patches.

Maintenance costs grow every year. New developers take weeks to understand the code and every PHP update breaks something. Meanwhile, the business needs to move forward and technology becomes a bottleneck.

Unstructured code with no standards

Files thousands of lines long with business logic, HTML and SQL mixed together. Modifying a single feature means touching dozens of files.

No tests and outdated security

There are no automated tests, input validation is inconsistent and known vulnerabilities remain unpatched.

Single-developer dependency

Only one person understands how the system works. If they are unavailable, the business grinds to a halt.

Impossible to add new features

Every new feature requires a disproportionate effort because the technical foundation cannot support it.

Incompatible with modern PHP versions

The system uses deprecated functions and is not compatible with PHP 8.x, preventing server security patches from being applied.

Slow, manual deployments

Pushing changes to production is a manual, slow, error-prone process. There are no CI/CD pipelines or defined staging environments.

How the migration works

We migrate your system to Laravel in 4 phases without disrupting your operations:

01

Current system audit

We analyse the source code, database, integrations and business flows. We document what exists and identify risks and technical debt.

02

Module-based migration plan

We divide the system into functional modules and prioritise by business value and technical risk. Each module is migrated independently.

03

Progressive migration with coexistence

The legacy system and the new one coexist during the transition. We migrate module by module, validating with real users before moving on to the next.

04

Validation, testing and deployment

Each migrated module includes automated tests, data validation and functional parity verification against the original system.

Key benefits

Maintainable and documented code

Laravel architecture with clear separation of concerns: models, controllers, services and validations. Any Laravel developer can understand it.

Up-to-date security

Protection against SQL injection, XSS, CSRF and OWASP Top 10 vulnerabilities — included out of the box with Laravel.

Automated testing

Each migrated module includes unit and integration tests that catch regressions before they reach production.

Migration with zero business downtime

The legacy system remains fully operational throughout the transition. Users do not notice the change until everything has been validated.

A foundation for growth

Once on Laravel, adding APIs, integrating external services, implementing queues or scaling is straightforward and predictable.

Compatible with modern PHP

The new system runs on PHP 8.x with all the performance and security improvements that entails.

Technologies we use

Laravel 11

The leading PHP framework for robust, secure and maintainable web applications.

PHP 8.x

Modern PHP with strong typing, enums, fibers and significant performance improvements.

MySQL / PostgreSQL

Schema migration, query optimisation and data normalisation during the transition.

PHPUnit / Pest

Testing frameworks to ensure functional parity between the legacy and the new system.

Docker

Reproducible environments to run the legacy and the new system in parallel during the migration.

Nginx + PHP-FPM / Opcache

Optimised web-server configuration with Opcache and performance tuning to maximise throughput from day one.

Case study: management platform in PHP vanilla

Scenario

A professional services company with 40 employees used an internal management platform developed in PHP vanilla 8 years ago. The system managed clients, projects and invoicing, but the code was unmaintainable and ran on PHP 5.6.

Challenge

Migrate the platform to a modern architecture without losing historical data or disrupting the daily operations of the 40 users.

Solution

We executed a module-by-module migration to Laravel 11: first authentication and users, then clients and projects, and finally invoicing. Each module was validated with the team before deactivating the corresponding legacy module.

-65%

Feature development time

-90%

Security incidents

78%

Test coverage

0h

Downtime during migration

Frequently asked questions

How long does a migration to Laravel take?

It depends on the size and complexity of the system. A medium-sized application is migrated in 3–6 months by modules. Large applications may require 6–12 months. Each migrated module delivers value from day one.

Is data lost during the migration?

No. Data migration is a critical phase of the project. We design migration scripts that transform and validate every record. They are run first in test environments and only then in production.

Can I keep using my system while it is being migrated?

Yes. The progressive migration approach allows the legacy system to remain operational. Both systems coexist during the transition and users are migrated gradually.

What if my system uses WordPress with custom plugins?

We analyse each plugin: those covering business logic are reimplemented in Laravel. Those that are purely content-related can be kept or migrated to a custom CMS as appropriate.

Is it worth migrating or is it better to rewrite from scratch?

In most cases, progressive migration is safer and more cost-effective. Rewriting from scratch means months without a working product and a risk of losing undocumented business logic.

Is your legacy system holding your business back?

We analyse your current application and propose a Laravel migration plan with zero downtime. The first consultation is free.

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