Clean PHP: Writing Code Your Team Will Appreciate
Naming, small methods, responsibility, and refactoring practices that reduce the cost of future changes.
Clean code is code that makes its constraints visible. It favors precise names, short feedback loops, unsurprising control flow, and boundaries that match the business problem.
Name the decision
Names should explain why a value exists, not repeat its type. Replace clusters of booleans and strings with small value objects when the combinations have rules.
Keep methods at one level
A method should either coordinate a workflow or perform a detail. Mixing SQL, validation, formatting, and notification in one method makes every change risky. Extract around responsibilities, not arbitrary line counts.
Refactor behind evidence
Characterization tests protect legacy behavior. Make small structural changes, run the tests, and commit coherent steps so reviewers can separate movement from behavior changes.
Key Takeaways
- Use domain language in names.
- Separate orchestration from implementation details.
- Refactor in small, tested steps.