API for describing data based on a set of available data types. PHP has data types, such as int, string, float, array, etc., and it is an object-oriented
hook_queue_info_alter(&$queues) Alter cron queue information before cron runs. Called
Service tags overview Some services have tags, which are defined in the service definition. Tags are used to define a group of related services
Overview of the Dependency Injection Container and Services. Overview of container, injection, and services The
hook_mail($key, &$message, $params) Prepares a message based on parameters; This
Overview of standards and best practices for developers Ideally, all code that is included in Drupal Core and contributed modules, themes, and
hook_countries_alter(&$countries) Alter the default country list. Parameters
Overview of utility classes and functions for developers. Drupal provides developers with a variety of utility functions that make it easier
Annotations for class discovery and metadata description. The Drupal plugin system has a set of reusable components that developers can use
hook_rebuild() Rebuild data based upon refreshed caches. This hook allows your
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