Classes, traits, and interfaces - 9.5.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 1523

Name	Deprecated	Object type	Namespace	File name	Summary	Direct uses	Use statements	Strings
SqlBaseTest		class	Drupal\Tests\views\Unit\Plugin\pager	core/modules/views/tests/src/Unit/Plugin/pager/SqlBaseTest.php	@coversDefaultClass \Drupal\views\Plugin\views\pager\SqlBase[[api-linebreak]] @group views
SqlBaseTest		class	Drupal\Tests\migrate\Unit	core/modules/migrate/tests/src/Unit/SqlBaseTest.php	Tests the SqlBase class.
SqlBaseTest		class	Drupal\Tests\migrate\Kernel	core/modules/migrate/tests/src/Kernel/SqlBaseTest.php	Tests the functionality of SqlBase.
SqlContentEntityStorage		class	Drupal\Core\Entity\Sql	core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php	A content entity database storage implementation.	13	23
SqlContentEntityStorageException		class	Drupal\Core\Entity\Sql	core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageException.php	Exception thrown when a SQL storage operation fails.		1
SqlContentEntityStorageSchema		class	Drupal\Core\Entity\Sql	core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorageSchema.php	Defines a schema handler that supports revisionable, translatable entities.	11	13
SqlContentEntityStorageSchemaColumnTest		class	Drupal\Tests\field\Kernel\Entity\Update	core/modules/field/tests/src/Kernel/Entity/Update/SqlContentEntityStorageSchemaColumnTest.php	Tests that schema changes in fields with data are detected during updates.
SqlContentEntityStorageSchemaTest		class	Drupal\KernelTests\Core\Entity\Sql	core/tests/Drupal/KernelTests/Core/Entity/Sql/SqlContentEntityStorageSchemaTest.php	@group Entity
SqlContentEntityStorageSchemaTest		class	Drupal\Tests\Core\Entity\Sql	core/tests/Drupal/Tests/Core/Entity/Sql/SqlContentEntityStorageSchemaTest.php	@coversDefaultClass \Drupal\Core\Entity\Sql\SqlContentEntityStorageSchema[[api-linebreak]] @group Entity
SqlContentEntityStorageTest		class	Drupal\Tests\Core\Entity\Sql	core/tests/Drupal/Tests/Core/Entity/Sql/SqlContentEntityStorageTest.php	@coversDefaultClass \Drupal\Core\Entity\Sql\SqlContentEntityStorage[[api-linebreak]] @group Entity
SqlContentEntityStorageTestEntityInterface		abstract class	Drupal\Tests\Core\Entity\Sql	core/tests/Drupal/Tests/Core/Entity/Sql/SqlContentEntityStorageTest.php	Provides an entity with dummy implementations of static methods.
SqlCountCache		class	Drupal\migrate_sql_count_cache_test\Plugin\migrate\source	core/modules/migrate/tests/modules/migrate_sql_count_cache_test/src/Plugin/migrate/source/SqlCountCache.php	Source plugin for Sql count cache test.
SqlDeprecationTest		class	Drupal\Tests\migrate\Kernel\Plugin\id_map	core/modules/migrate/tests/src/Kernel/Plugin/id_map/SqlDeprecationTest.php	Tests deprecation notice in Sql constructor.
SqlEntityLoadingTest		class	Drupal\Tests\views\Kernel\Plugin	core/modules/views/tests/src/Kernel/Plugin/SqlEntityLoadingTest.php	Tests the loading of entities and entity revisions.
SqlEntityStorageInterface		interface	Drupal\Core\Entity\Sql	core/lib/Drupal/Core/Entity/Sql/SqlEntityStorageInterface.php	A common interface for SQL-based entity storage implementations.	1	4
SqlFieldableEntityTypeListenerTrait		trait	Drupal\Core\Entity\Sql	core/lib/Drupal/Core/Entity/Sql/SqlFieldableEntityTypeListenerTrait.php	Helper methods for EntityTypeListenerInterface.
SqlIdMapTest		class	Drupal\Tests\migrate\Kernel\Plugin\id_map	core/modules/migrate/tests/src/Kernel/Plugin/id_map/SqlTest.php	Defines a test SQL ID map for use in tests.
SqliteDateSql		class	Drupal\views\Plugin\views\query	core/modules/views/src/Plugin/views/query/SqliteDateSql.php	SQLite-specific date handling.		1	2
SqliteDateSqlTest		class	Drupal\Tests\views\Unit\Plugin\views\query	core/modules/views/tests/src/Unit/Plugin/views/query/SqliteDateSqlTest.php	Tests the MySQL-specific date query handler.
SqliteDriverLegacyTest		class	Drupal\Tests\sqlite\Kernel\sqlite	core/modules/sqlite/tests/src/Kernel/sqlite/SqliteDriverLegacyTest.php	Tests the deprecations of the SQLite database driver classes in Core.
SqlModeTest		class	Drupal\Tests\mysql\Kernel\mysql	core/modules/mysql/tests/src/Kernel/mysql/SqlModeTest.php	Tests compatibility of the MySQL driver with various sql_mode options.
SqlQueryTest		class	Drupal\Tests\views\Kernel\Plugin	core/modules/views/tests/src/Kernel/Plugin/SqlQueryTest.php	Tests the sql query plugin.
SqlTest		class	Drupal\Tests\views\Unit\Plugin\query	core/modules/views/tests/src/Unit/Plugin/query/SqlTest.php	@coversDefaultClass \Drupal\views\Plugin\views\query\Sql[[api-linebreak]]
SqlTest		class	Drupal\Tests\migrate\Kernel\Plugin\id_map	core/modules/migrate/tests/src/Kernel/Plugin/id_map/SqlTest.php	Tests that the migrate map table is created.
SSH		class	Drupal\Core\FileTransfer	core/lib/Drupal/Core/FileTransfer/SSH.php	The SSH connection class for the update module.
Stable9LibraryOverrideTest		class	Drupal\KernelTests\Core\Theme	core/tests/Drupal/KernelTests/Core/Theme/Stable9LibraryOverrideTest.php	Tests Stable 9's library overrides.
Stable9TemplateOverrideTest		class	Drupal\KernelTests\Core\Theme	core/tests/Drupal/KernelTests/Core/Theme/Stable9TemplateOverrideTest.php	Tests Stable 9's template overrides.
StableLibraryOverrideTest		class	Drupal\KernelTests\Core\Theme	core/tests/Drupal/KernelTests/Core/Theme/StableLibraryOverrideTest.php	Tests Stable's library overrides.
StableLibraryOverrideTestBase		abstract class	Drupal\KernelTests\Core\Theme	core/tests/Drupal/KernelTests/Core/Theme/StableLibraryOverrideTestBase.php	Tests the behavior of a theme when base_theme info key is missing.	2
StableTemplateOverrideTest		class	Drupal\KernelTests\Core\Theme	core/tests/Drupal/KernelTests/Core/Theme/StableTemplateOverrideTest.php	Tests Stable's template overrides.
StableUninstallUpdateTest		class	Drupal\Tests\system\Functional\Update	core/modules/system/tests/src/Functional/Update/StableUninstallUpdateTest.php	Ensures that update hook uninstalls Stable when it's no longer needed.
StackedKernelPass		class	Drupal\Core\DependencyInjection\Compiler	core/lib/Drupal/Core/DependencyInjection/Compiler/StackedKernelPass.php	Provides a compiler pass for stacked HTTP kernels.		2
StackedKernelPassTest		class	Drupal\Tests\Core\DependencyInjection\Compiler	core/tests/Drupal/Tests/Core/DependencyInjection/Compiler/StackedKernelPassTest.php	@coversDefaultClass \Drupal\Core\DependencyInjection\Compiler\StackedKernelPass[[api-linebreak]] @group DependencyInjection
StackedRouteMatchInterface		interface	Drupal\Core\Routing	core/lib/Drupal/Core/Routing/StackedRouteMatchInterface.php	Defines an interface for a stack of route matches.	1	3
StackedSessionHandlerPass		class	Drupal\Core\DependencyInjection\Compiler	core/lib/Drupal/Core/DependencyInjection/Compiler/StackedSessionHandlerPass.php	Provides a compiler pass for stacked session save handlers.		1
StackKernelIntegrationTest		class	Drupal\KernelTests\Core\HttpKernel	core/tests/Drupal/KernelTests/Core/HttpKernel/StackKernelIntegrationTest.php	Tests the stacked kernel functionality.
StackSessionHandlerIntegrationTest		class	Drupal\Tests\system\Functional\Session	core/modules/system/tests/src/Functional/Session/StackSessionHandlerIntegrationTest.php	Tests the stacked session handler functionality.
Standard		class	Drupal\editor\EditorXssFilter	core/modules/editor/src/EditorXssFilter/Standard.php	Defines the standard text editor XSS filter.		2
Standard		class	Drupal\views\Plugin\views\join	core/modules/views/src/Plugin/views/join/Standard.php	Default implementation of the join plugin.
Standard		class	Drupal\views\Plugin\views\sort	core/modules/views/src/Plugin/views/sort/Standard.php	Default implementation of the base sort plugin.
Standard		class	Drupal\views\Plugin\views\field	core/modules/views/src/Plugin/views/field/Standard.php	Default implementation of the base field plugin.
Standard		class	Drupal\views\Plugin\views\relationship	core/modules/views/src/Plugin/views/relationship/Standard.php	Default implementation of the base relationship plugin.
Standard		class	Drupal\views\Plugin\views\filter	core/modules/views/src/Plugin/views/filter/Standard.php	Default implementation of the base filter plugin.		1
Standard		class	Drupal\views\Plugin\views\wizard	core/modules/views/src/Plugin/views/wizard/Standard.php	Standard Views wizard plugin.
Standard		class	Drupal\views\Plugin\views\argument	core/modules/views/src/Plugin/views/argument/Standard.php	Default implementation of the base argument plugin.
StandardInstallerTest		class	Drupal\FunctionalTests\Installer	core/tests/Drupal/FunctionalTests/Installer/StandardInstallerTest.php	Tests the interactive installer installing the standard profile.
StandardJavascriptTest		class	Drupal\Tests\standard\FunctionalJavascript	core/profiles/standard/tests/src/FunctionalJavascript/StandardJavascriptTest.php	Tests Standard installation profile JavaScript expectations.
StandardProfileTest		class	Drupal\Tests\rdf\Functional	core/modules/rdf/tests/src/Functional/StandardProfileTest.php	Tests the RDF mappings and RDFa markup on top of the standard profile.
StandardTest		class	Drupal\Tests\standard\Functional	core/profiles/standard/tests/src/Functional/StandardTest.php	Tests Standard installation profile expectations.
StandardTest		class	Drupal\Tests\editor\Unit\EditorXssFilter	core/modules/editor/tests/src/Unit/EditorXssFilter/StandardTest.php	@coversDefaultClass \Drupal\editor\EditorXssFilter\Standard[[api-linebreak]] @group editor

Other projects

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