Classes, traits, and interfaces - Drupal 11.1.x - Drupal Core

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
Array_		class	PhpParser\Node\Expr\Cast	vendor/nikic/php-parser/lib/PhpParser/Node/Expr/Cast/Array_.php
Array_		class	phpDocumentor\Reflection\Types	vendor/phpdocumentor/type-resolver/src/Types/Array_.php	Represents an array type as described in the PSR-5, the PHPDoc Standard.	3	5
Array_		class	PhpParser\Node\Expr	vendor/nikic/php-parser/lib/PhpParser/Node/Expr/Array_.php			2
ArrowFunction		class	PhpParser\Node\Expr	vendor/nikic/php-parser/lib/PhpParser/Node/Expr/ArrowFunction.php
ArrowFunctionDeclarationSniff		class	SlevomatCodingStandard\Sniffs\Functions	vendor/slevomat/coding-standard/SlevomatCodingStandard/Sniffs/Functions/ArrowFunctionDeclarationSniff.php
ArrowFunctionExpression		class	Peast\Syntax\Node	vendor/mck89/peast/lib/Peast/Syntax/Node/ArrowFunctionExpression.php	A node that represents an arrow function. For example: var fn = (a, b) => console.log(a, b)
ArrowFunctionExpression		class	Twig\Node\Expression	vendor/twig/twig/src/Node/Expression/ArrowFunctionExpression.php	Represents an arrow function.		1
ArtifactRepository		class	Composer\Repository	vendor/composer/composer/src/Composer/Repository/ArtifactRepository.php	@author Serge Smertin <serg.smertin@gmail.com>
AsAlias		final class	Symfony\Component\DependencyInjection\Attribute	vendor/symfony/dependency-injection/Attribute/AsAlias.php	An attribute to tell under which alias a service should be registered or to use the implemented interface if no parameter is given.		1
AsciiSlugger		class	Symfony\Component\String\Slugger	vendor/symfony/string/Slugger/AsciiSlugger.php	@author Titouan Galopin <galopintitouan@gmail.com>
AsCommand		class	Symfony\Component\Console\Attribute	vendor/symfony/console/Attribute/AsCommand.php	Service tag to autoconfigure commands.		8
AsController		class	Symfony\Component\HttpKernel\Attribute	vendor/symfony/http-kernel/Attribute/AsController.php	Autoconfigures controllers as services by applying the `controller.service_arguments` tag to them.		1
AsDecorator		class	Symfony\Component\DependencyInjection\Attribute	vendor/symfony/dependency-injection/Attribute/AsDecorator.php	Declares a decorating service.		1
AsEventListener		class	Symfony\Component\EventDispatcher\Attribute	vendor/symfony/event-dispatcher/Attribute/AsEventListener.php	Service tag to autoconfigure event listeners.
AsgardInstaller		class	Composer\Installers	vendor/composer/installers/src/Composer/Installers/AsgardInstaller.php
Assert		class	Webmozart\Assert	vendor/webmozart/assert/src/Assert.php	Efficient assertions to validate the input/output of your methods.		37
Assert		abstract class	PHPUnit\Framework	vendor/phpunit/phpunit/src/Framework/Assert.php	@no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit	1	4
AssertFunctionTypeSpecifyingExtension		class	PHPStan\Type\PHPUnit\Assert	vendor/phpstan/phpstan-phpunit/src/Type/PHPUnit/Assert/AssertFunctionTypeSpecifyingExtension.php
AssertingContextualValidator		class	Symfony\Component\Validator\Test	vendor/symfony/validator/Test/ConstraintValidatorTestCase.php	@internal
AssertionFailed		final class	PHPUnit\Event\Test	vendor/phpunit/phpunit/src/Event/Events/Test/Assertion/AssertionFailed.php	@no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit
AssertionFailedError		class	PHPUnit\Framework	vendor/phpunit/phpunit/src/Framework/Exception/AssertionFailedError.php	@no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit	6	3
AssertionFailedSubscriber		interface	PHPUnit\Event\Test	vendor/phpunit/phpunit/src/Event/Events/Test/Assertion/AssertionFailedSubscriber.php	@no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit
AssertionSucceeded		final class	PHPUnit\Event\Test	vendor/phpunit/phpunit/src/Event/Events/Test/Assertion/AssertionSucceeded.php	@no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit
AssertionSucceededSubscriber		interface	PHPUnit\Event\Test	vendor/phpunit/phpunit/src/Event/Events/Test/Assertion/AssertionSucceededSubscriber.php	@no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit
AssertMailTrait		trait	Drupal\Core\Test	core/lib/Drupal/Core/Test/AssertMailTrait.php	Provides methods for testing emails sent during test runs.
AssertMethodTypeSpecifyingExtension		class	PHPStan\Type\PHPUnit\Assert	vendor/phpstan/phpstan-phpunit/src/Type/PHPUnit/Assert/AssertMethodTypeSpecifyingExtension.php
AssertRuleHelper		class	PHPStan\Rules\PHPUnit	vendor/phpstan/phpstan-phpunit/src/Rules/PHPUnit/AssertRuleHelper.php
AssertSameBooleanExpectedRule		class	PHPStan\Rules\PHPUnit	vendor/phpstan/phpstan-phpunit/src/Rules/PHPUnit/AssertSameBooleanExpectedRule.php	@implements Rule<NodeAbstract>
AssertSameNullExpectedRule		class	PHPStan\Rules\PHPUnit	vendor/phpstan/phpstan-phpunit/src/Rules/PHPUnit/AssertSameNullExpectedRule.php	@implements Rule<NodeAbstract>
AssertSameWithCountRule		class	PHPStan\Rules\PHPUnit	vendor/phpstan/phpstan-phpunit/src/Rules/PHPUnit/AssertSameWithCountRule.php	@implements Rule<NodeAbstract>
AssertStaticMethodTypeSpecifyingExtension		class	PHPStan\Type\PHPUnit\Assert	vendor/phpstan/phpstan-phpunit/src/Type/PHPUnit/Assert/AssertStaticMethodTypeSpecifyingExtension.php
AssertTagMethodValueNode		class	PHPStan\PhpDocParser\Ast\PhpDoc	vendor/phpstan/phpdoc-parser/src/Ast/PhpDoc/AssertTagMethodValueNode.php			1
AssertTagPropertyValueNode		class	PHPStan\PhpDocParser\Ast\PhpDoc	vendor/phpstan/phpdoc-parser/src/Ast/PhpDoc/AssertTagPropertyValueNode.php			1
AssertTagValueNode		class	PHPStan\PhpDocParser\Ast\PhpDoc	vendor/phpstan/phpdoc-parser/src/Ast/PhpDoc/AssertTagValueNode.php			1
AssertTypeSpecifyingExtensionHelper		class	PHPStan\Type\PHPUnit\Assert	vendor/phpstan/phpstan-phpunit/src/Type/PHPUnit/Assert/AssertTypeSpecifyingExtensionHelper.php
AssetCollectionGrouperInterface		interface	Drupal\Core\Asset	core/lib/Drupal/Core/Asset/AssetCollectionGrouperInterface.php	Interface defining a service that logically groups a collection of assets.	2	1
AssetCollectionGroupOptimizerInterface		interface	Drupal\Core\Asset	core/lib/Drupal/Core/Asset/AssetCollectionGroupOptimizerInterface.php	Interface defining a service that optimizes a collection of assets.	2
AssetCollectionOptimizerInterface		interface	Drupal\Core\Asset	core/lib/Drupal/Core/Asset/AssetCollectionOptimizerInterface.php	Interface defining a service that optimizes a collection of assets.	1	3
AssetCollectionRendererInterface		interface	Drupal\Core\Asset	core/lib/Drupal/Core/Asset/AssetCollectionRendererInterface.php	Interface defining a service that generates a render array to render assets.	2	3
AssetControllerBase		abstract class	Drupal\system\Controller	core/modules/system/src/Controller/AssetControllerBase.php	Defines a controller to serve asset aggregates.	2
AssetDumper		class	Drupal\Core\Asset	core/lib/Drupal/Core/Asset/AssetDumper.php	Dumps a CSS or JavaScript asset.
AssetDumperInterface		interface	Drupal\Core\Asset	core/lib/Drupal/Core/Asset/AssetDumperInterface.php	Interface defining a service that dumps an (optimized) asset.	1
AssetDumperUriInterface		interface	Drupal\Core\Asset	core/lib/Drupal/Core/Asset/AssetDumperUriInterface.php	Interface defining a service that dumps an asset to a specified location.	1	1
AssetGroupSetHashTrait		trait	Drupal\Core\Asset	core/lib/Drupal/Core/Asset/AssetGroupSetHashTrait.php	Provides a method to generate a normalized hash of a given asset group set.		3
AssetOptimizerInterface		interface	Drupal\Core\Asset	core/lib/Drupal/Core/Asset/AssetOptimizerInterface.php	Interface defining a service that optimizes an asset.	2
AssetQueryString		class	Drupal\Core\Asset	core/lib/Drupal/Core/Asset/AssetQueryString.php	Stores a cache busting query string service for asset URLs.
AssetQueryStringInterface		interface	Drupal\Core\Asset	core/lib/Drupal/Core/Asset/AssetQueryStringInterface.php	Provides a cache busting query string service for asset URLs.	1	1
AssetResolver		class	Drupal\Core\Asset	core/lib/Drupal/Core/Asset/AssetResolver.php	The default asset resolver.
AssetResolverInterface		interface	Drupal\Core\Asset	core/lib/Drupal/Core/Asset/AssetResolverInterface.php	Resolves asset libraries into concrete CSS and JavaScript assets.	1	4
AssetRoutes		class	Drupal\system\Routing	core/modules/system/src/Routing/AssetRoutes.php	Defines a routes' callback to register a URL for serving assets.