WordPress Developer Quick Reference

Siren is built on PHPNomad, a platform-agnostic PHP framework. None of Siren’s core logic depends on WordPress. It uses WordPress as a host platform through a thin integration layer. This means the patterns you use daily in WordPress plugin development have direct equivalents in Siren, but they are expressed through typed PHP interfaces rather than global functions and string-named hooks.

This guide maps WordPress patterns you already know to their Siren equivalents. Each row links to a dedicated page with side-by-side code examples. The rest of Siren’s documentation is platform-agnostic by design. It describes PHPNomad interfaces, domain events, and datastores without reference to WordPress. These WordPress Developer Guide pages are the bridge: they start from the WordPress concept and show you where to land.

If you are building a Siren extension for a WordPress plugin, start here and follow the links into the detailed guides. If you have already read through the Getting Started section, use this table as a quick-lookup cheat sheet.

Pattern Mapping

WordPress Pattern	Siren Equivalent	Details
`add_action` / `add_filter`	`Event::attach()` or `CanHandle` + `HasListeners`	Hooks, Actions & Events
`do_action` / `apply_filters`	`Event::broadcast()` or `EventStrategy::broadcast()`	Hooks, Actions & Events
WordPress hook to domain event	Event bindings + transformer callables	Bridging Platform Hooks
`get_post` / `WP_Query`	`Facade::getById()` / `andWhere()` or datastore DI	Querying Data
`$wpdb` direct queries	Datastore `andWhere()` / `where()`	Querying Data
Global functions	Facades (static wrappers)	Dependency Injection
`get_option` / `update_option`	`Configs::getConfigValue()` or `ConfigDatastore` DI	Configuration
`get_post_meta` / `update_post_meta`	`Configs::setConfig()` (scoped by type/subtype)	Configuration
Custom post types	Model classes + datastores	Architecture Overview
`register_rest_route`	`Controller` + `HasMiddleware` + `HasControllers`	REST API Patterns
`current_user_can`	`User::canDoAction()` or auth middleware	Roles & Permissions
WP-Cron / `wp_schedule_event`	Domain event listeners or `TaskStrategy::dispatch()`	PHPNomad Tasks
`WP_Error` / `is_wp_error()`	Typed exceptions (`RecordNotFoundException`, etc.)	Error Handling
Plugin activation hooks	Initializers + `shouldLoad()`	The Integration Class