#legacy

2 articles

May 11, 2026 · 10 min read

Taking over a legacy PHP codebase: diagnosis and mapping across 5 axes

A full method to take over a legacy PHP codebase without breaking it: functional, technical, risk, debt and human mapping. Concrete tools (PHPStan, Deptrac, Rector), a decision matrix and a 5-step exit plan.

Apr 20, 2026 · 8 min read

Migrating a legacy PHP 5.6 to 8.3: a battle-tested strangler-pattern methodology

A five-phase methodology to migrate a PHP 5.6 monolith to 8.3 with no big bang, using Rector, PHPStan, Deptrac and Behat. Field report from a 14-month project, zero incidents.