Old PHP is not automatically failed software.
A legacy application may look unfashionable and still represent years of working business logic. Replacing it can be sensible, but the cost of recreating undocumented behavior is routinely underestimated.
Typical legacy work
- PHP version and dependency compatibility
- Incremental modernization
- Database performance and schema cleanup
- Separating business logic from presentation code
- API and integration stabilization
- Removing dangerous global state or duplicated logic
- Introducing tests around critical behavior
- Migration planning where a framework move earns its cost
Modernize the risk, not the fashion.
The objective is safer operation and easier change. Sometimes that means moving parts toward Laravel. Sometimes it means keeping the current architecture and fixing the pieces that actually create operational risk.