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Refactoring Legacy PHP Code

Transform your legacy PHP code from chaotic to clear

Live 21. August 2025 | 17:00 - 18:00 CEST

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What’s the right way to start refactoring legacy code?

Legacy code is part of everyday life for many PHP developers – but refactoring often comes with uncertainty: missing tests, complex dependencies, and unclear side effects.

In this hands-on live session, you’ll learn how to systematically and safely modernize even deeply entrenched PHP codebases.

Make sense of legacy code and improve it safely – with structure and strategy

You’ll learn how to use golden tests, characterization tests, and test-driven refactoring to create a stable foundation that preserves existing functionality and enables safe, controlled improvements.

Through live coding and real-world examples, we’ll show you how to bring structure and clarity to complex legacy codebases – using techniques you can apply immediately in your day-to-day work.

Join us and learn...

How to use golden tests and characterization tests to build a reliable foundation for refactoring – without breaking existing functionality
How to apply test-driven development (TDD) to simplify complex code in small, manageable steps and make it more maintainable over time
How to identify common patterns and problem areas in legacy code – and address them safely and systematically

Expert Knowledge for

PHP developers who regularly work with legacy code
Backend developers maintaining or modernizing existing
tech leads looking to establish structured refactoring practices within their teams

Get to know our expert

Jesús Valera Reales is a Software Developer since 2017. He works mostly as a PHP Backend Developer, but he knows other programming languages, such as Java, Kotlin, and Javascript. He loves topics like Clean Code, DDD, and Software Architecture. Participating in OSS, like Phel-Lang and Gacela, is one of his passions. Sharing his knowledge is one of his priorities. ⁠

Jesus Valera Reales - GotPhoto.com

Jose Maria “Chema” Valera Reales is a Software Developer since 2013. When he is not working as a Tech Lead, he likes to collaborate on different Open-Source projects, especially Phel-Lang or his own project Gacela. Reading, writing, and sharing knowledge about software testing, new approaches to pair-programming, and improving team collaboration also consume a big chunk of his time.

Jose M. Valera Reales - Purpose Green Real Estate GmbH

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