OOP in WordPress Plugin Development

OOP in WordPress Plugin Development — a practical guide to OOP WordPress plugin with clear examples you can reuse in real projects.

OOP Tutorial Series (60/65). Prefer one article? Read the complete OOP tutorial.

Short description

OOP plugins are easier to maintain: one class for admin, one for REST, one for CPT registration, bootstrapped from the main plugin file.

Plugin class bootstrap

namespace AcmeTools;

final class Plugin {
    public function boot(): void {
        add_action('init', [$this, 'register']);
    }
    public function register(): void {
        // CPT, shortcodes, etc.
    }
}

(new Plugin())->boot();