SOLID in WordPress Architecture — Part 3: Liskov Substitution Principle
2 Mar 2026·
Originally published on
Medium
·OOP & SOLID
In short
- A subtype must be able to replace its base type without breaking behaviour.
- Violations are common in payment gateways, storage adapters and cache layers.
- Following LSP makes abstractions trustworthy and modularity real.
Read the full article on Medium →