SOLID in the WordPress Ecosystem: What 4wp.dev’s Plugins Actually Prove
6 Sep 2026·
Originally published on
Medium
·OOP & SOLID
In short
- 4WP plugins show SOLID in practice: separate products instead of one bloated monolith.
- `do_action()` and `apply_filters()` implement OCP in procedural form.
- The principles overlap: one architectural decision often satisfies several at once.
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