Classes, traits, and interfaces - 11.x - drupal

Introduction to classes

A lot of the PHP code in Drupal is object oriented (OO), making use of PHP classes, interfaces, and traits. See the Objected-oriented programming conventions for more information.

See also

Objected-oriented programming conventions

File

core/core.api.php, line 1518

Name	Deprecated	Object type	Namespace	File name	Summary	Direct uses	Use statements	Strings
CounterTest		class	Drupal\Tests\views\Unit\Plugin\field	core/modules/views/tests/src/Unit/Plugin/field/CounterTest.php	@coversDefaultClass \Drupal\views\Plugin\views\field\Counter @group views
CountryCodeConstraint		class	Drupal\Core\Validation\Plugin\Validation\Constraint	core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/CountryCodeConstraint.php			1
CountryCodeConstraintTest		class	Drupal\Tests\Core\Validation\Plugin\Validation\Constraint	core/tests/Drupal/Tests/Core/Validation/Plugin/Validation/Constraint/CountryCodeConstraintTest.php	@covers \Drupal\Core\Validation\Plugin\Validation\Constraint\CountryCodeConstraint @group validation
CountryManager		class	Drupal\Core\Locale	core/lib/Drupal/Core/Locale/CountryManager.php	Provides list of countries.
CountryManagerInterface		interface	Drupal\Core\Locale	core/lib/Drupal/Core/Locale/CountryManagerInterface.php	Defines a common interface for country managers.	1	3
CountryManagerTest		class	Drupal\KernelTests\Core\Locale	core/tests/Drupal/KernelTests/Core/Locale/CountryManagerTest.php	Tests Country Manager functionality.
CreatedItem		class	Drupal\Core\Field\Plugin\Field\FieldType	core/lib/Drupal/Core/Field/Plugin/Field/FieldType/CreatedItem.php	Defines the 'created' entity field type.	1	2
CreateForEachBundle		final class	Drupal\Core\Config\Action\Plugin\ConfigAction	core/lib/Drupal/Core/Config/Action/Plugin/ConfigAction/CreateForEachBundle.php	Creates config entities for each bundle of a particular entity type.
CreateForEachBundleDeriver		final class	Drupal\Core\Config\Action\Plugin\ConfigAction\Deriver	core/lib/Drupal/Core/Config/Action/Plugin/ConfigAction/Deriver/CreateForEachBundleDeriver.php	Generates derivatives for the create_for_each_bundle config action.		1
CreateMigrationsTrait		trait	Drupal\Tests\migrate_drupal\Traits	core/modules/migrate_drupal/tests/src/Traits/CreateMigrationsTrait.php			1
CreateNew		class	Drupal\system\Plugin\ImageToolkit\Operation\gd	core/modules/system/src/Plugin/ImageToolkit/Operation/gd/CreateNew.php	Defines GD2 create_new image operation.
CreateSampleEntityTest		class	Drupal\KernelTests\Core\Entity	core/tests/Drupal/KernelTests/Core/Entity/CreateSampleEntityTest.php	Tests the ContentEntityStorageBase::createWithSampleValues method.
CreateTestContentEntitiesTrait		trait	Drupal\Tests\migrate_drupal\Traits	core/modules/migrate_drupal/tests/src/Traits/CreateTestContentEntitiesTrait.php	Provides helper methods for creating test content.		8
CredentialForm		class	Drupal\migrate_drupal_ui\Form	core/modules/migrate_drupal_ui/src/Form/CredentialForm.php	Migrate Upgrade database credential form.			1
CredentialFormTest		class	Drupal\Tests\migrate_drupal_ui\Functional	core/modules/migrate_drupal_ui/tests/src/Functional/CredentialFormTest.php	Test the credential form for both Drupal 6 and Drupal 7 sources.
Cron		class	Drupal\Core\ProxyClass	core/lib/Drupal/Core/ProxyClass/Cron.php	Provides a proxy class for \Drupal\Core\Cron.
Cron		class	Drupal\Core	core/lib/Drupal/Core/Cron.php	The Drupal core Cron service.		2
CronAccessCheck		class	Drupal\system\Access	core/modules/system/src/Access/CronAccessCheck.php	Access check for cron routes.			2
CronController		class	Drupal\system	core/modules/system/src/CronController.php	Controller for Cron handling.
CronForm		class	Drupal\system\Form	core/modules/system/src/Form/CronForm.php	Configure cron settings for this site.			1
CronInterface		interface	Drupal\Core	core/lib/Drupal/Core/CronInterface.php	An interface for running cron tasks.	2	3
CronQueueTest		class	Drupal\Tests\system\Kernel\System	core/modules/system/tests/src/Kernel/System/CronQueueTest.php	Tests the Cron Queue runner.
CronQueueTestDatabaseDelayException		class	Drupal\cron_queue_test\Plugin\QueueWorker	core/modules/system/tests/modules/cron_queue_test/src/Plugin/QueueWorker/CronQueueTestDatabaseDelayException.php	A queue worker for testing cron exception handling.		1
CronQueueTestDeriver		class	Drupal\cron_queue_test\Plugin\Derivative	core/modules/system/tests/modules/cron_queue_test/src/Plugin/Derivative/CronQueueTestDeriver.php	Provides a deriver for testing cron queues.		1
CronQueueTestDeriverQueue		class	Drupal\cron_queue_test\Plugin\QueueWorker	core/modules/system/tests/modules/cron_queue_test/src/Plugin/QueueWorker/CronQueueTestDeriverQueue.php	A queue worker for testing derivatives.		1
CronQueueTestException		class	Drupal\cron_queue_test\Plugin\QueueWorker	core/modules/system/tests/modules/cron_queue_test/src/Plugin/QueueWorker/CronQueueTestException.php	A queue worker for testing exceptions.		1
CronQueueTestLeaseTime		class	Drupal\cron_queue_test\Plugin\QueueWorker	core/modules/system/tests/modules/cron_queue_test/src/Plugin/QueueWorker/CronQueueTestLeaseTime.php	A queue worker for testing lease time.
CronQueueTestMemoryDelayException		class	Drupal\cron_queue_test\Plugin\QueueWorker	core/modules/system/tests/modules/cron_queue_test/src/Plugin/QueueWorker/CronQueueTestMemoryDelayException.php	A queue worker for testing cron exception handling.
CronQueueTestRequeueException		class	Drupal\cron_queue_test\Plugin\QueueWorker	core/modules/system/tests/modules/cron_queue_test/src/Plugin/QueueWorker/CronQueueTestRequeueException.php	A queue worker for testing re-queueing items.		1
CronQueueTestSuspendQueue		class	Drupal\cron_queue_test\Plugin\QueueWorker	core/modules/system/tests/modules/cron_queue_test/src/Plugin/QueueWorker/CronQueueTestSuspendQueue.php	A queue worker for testing suspending queue run.		1
CronRunTest		class	Drupal\Tests\system\Functional\System	core/modules/system/tests/src/Functional/System/CronRunTest.php	Tests cron runs.
CronRunTrait		trait	Drupal\Tests\Traits\Core	core/tests/Drupal/Tests/Traits/Core/CronRunTrait.php	Adds ability to run cron from tests.		16
CronSuspendQueueDelayTest		final class	Drupal\Tests\Core\Cron	core/tests/Drupal/Tests/Core/Cron/CronSuspendQueueDelayTest.php	Test Cron handling of suspended queues with a delay.
CronTest		class	Drupal\Tests\Core	core/tests/Drupal/Tests/Core/CronTest.php	Tests the Cron class.
Crop		class	Drupal\system\Plugin\ImageToolkit\Operation\gd	core/modules/system/src/Plugin/ImageToolkit/Operation/gd/Crop.php	Defines GD2 Crop operation.
CropImageEffect		class	Drupal\image\Plugin\ImageEffect	core/modules/image/src/Plugin/ImageEffect/CropImageEffect.php	Crops an image resource.	1
Crypt		class	Drupal\Component\Utility	core/lib/Drupal/Component/Utility/Crypt.php	Utility class for cryptographically-secure string handling routines.		85
CryptTest		class	Drupal\Tests\Component\Utility	core/tests/Drupal/Tests/Component/Utility/CryptTest.php	Tests random byte generation.
CsrfAccessCheck		class	Drupal\Core\Access	core/lib/Drupal/Core/Access/CsrfAccessCheck.php	Access protection against CSRF attacks.		1
CsrfAccessCheckTest		class	Drupal\Tests\Core\Access	core/tests/Drupal/Tests/Core/Access/CsrfAccessCheckTest.php	@coversDefaultClass \Drupal\Core\Access\CsrfAccessCheck @group Access
CsrfExceptionSubscriber		class	Drupal\Core\EventSubscriber	core/lib/Drupal/Core/EventSubscriber/CsrfExceptionSubscriber.php	Handles exceptions related to CSRF access.
CsrfRequestHeaderAccessCheck		class	Drupal\Core\Access	core/lib/Drupal/Core/Access/CsrfRequestHeaderAccessCheck.php	Access protection against CSRF attacks.		1
CsrfRequestHeaderTest		class	Drupal\Tests\system\Functional	core/modules/system/tests/src/Functional/CsrfRequestHeaderTest.php	Tests protecting routes by requiring CSRF token in the request header.
CsrfTokenController		class	Drupal\system\Controller	core/modules/system/src/Controller/CsrfTokenController.php	Returns responses for CSRF token routes.
CsrfTokenGenerator		class	Drupal\Core\Access	core/lib/Drupal/Core/Access/CsrfTokenGenerator.php	Generates and validates CSRF tokens.		11
CsrfTokenGeneratorTest		class	Drupal\Tests\Core\Access	core/tests/Drupal/Tests/Core/Access/CsrfTokenGeneratorTest.php	Tests the CsrfTokenGenerator class.
CsrfTokenRaceTest		class	Drupal\FunctionalJavascriptTests\Core	core/tests/Drupal/FunctionalJavascriptTests/Core/CsrfTokenRaceTest.php	Test race condition for CSRF tokens for simultaneous requests.
CssAssetController		class	Drupal\system\Controller	core/modules/system/src/Controller/CssAssetController.php	Defines a controller to serve CSS aggregates.
CssCollectionGrouper		class	Drupal\Core\Asset	core/lib/Drupal/Core/Asset/CssCollectionGrouper.php	Groups CSS assets.		1
CssCollectionGrouperUnitTest		class	Drupal\Tests\Core\Asset	core/tests/Drupal/Tests/Core/Asset/CssCollectionGrouperUnitTest.php	Tests the CSS asset collection grouper.

Other projects

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.