Legacy PHP to Symfony migration without losing positions and without interruptions.

A furniture store carrying twelve years of custom development on PHP 5.4. Full rebuild of the business logic on a modern Symfony stack, preserving SEO rankings.

01 Challenge and approach

× Before

A PHP 5.4 ERP that couldn't keep up with a multi-market business

The store ran on an ERP built on PHP 5.4 — a stack long past its support cycle and holding back further development.
Legacy code was behind persistent performance problems and slow-running core processes.
The system lacked the modern features needed to operate at scale across four countries (Poland, Slovakia, Czech Republic, Germany).
Outdated software posed a real security risk to business and customer data.
Critical functionality needed to be rewritten from scratch to meet current technology standards.

→ Our approach

Audit, business-logic rewrite, and a zero-downtime rollout

We ran a full audit of the existing ERP, identifying outdated components, vulnerabilities, and areas needing improvement.
We built a migration strategy onto a modern stack (Symfony), rewriting core functionality with performance in mind.
We modernized the code to current standards and optimized database queries and system processes for speed.
Before launch, we ran functional and security testing to confirm every business-critical process worked correctly.
We rolled out the new system with minimal downtime, actively monitoring performance after go-live.

02 Technology stack

What we built it with.

Symfony

Core framework for the rewritten ERP — performance, security, scalability

Sylius

E-commerce component deployed as part of the platform modernization

03 Project timeline

Audit

Existing ERP audit

Assessed the existing ERP to identify outdated components, vulnerabilities, and areas requiring enhancement.

Strategy

Upgrade strategy

Devised a plan to transition the ERP to a newer stack while rewriting essential functionalities for optimal performance.

Rewrite & optimization

Code modernization

Updated legacy code to current programming standards and optimized database queries and system processes.

Testing & deployment

Validation and go-live

Functional and security testing, followed by deployment with minimal downtime and post-launch monitoring.

04 Results

What changed.

60%

System responsiveness improvement

05 Similar case studies

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Got a similar problem?

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