Queue items to allow later processing. The queue system allows placing items in a queue and processing them later. The system tries to ensure
Use of the
Define functions that alter the behavior of Drupal core. One way for modules to alter the core behavior of Drupal (or another module) is to
API for user accounts, access checking, roles, and permissions. Overview and terminology Drupal's permission
hook_cache_flush() Flush all persistent and static caches. This hook asks your
PSR-4, namespaces, class naming, and other conventions. A lot of the PHP code in Drupal is object oriented (OO), making use of
Types of information in Drupal. Drupal has several distinct types of information, each with its own methods for storage and retrieval:
hook_config_import_steps_alter(&$sync_steps, \Drupal\Core\Config\ConfigImporter $config_importer) Alter
hook_config_schema_info_alter(&$definitions) Alter config typed data definitions. For
hook_cron() Perform periodic actions. Modules that require some commands to
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