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
BooleanOperator		class	Drupal\views\Plugin\views\filter	core/modules/views/src/Plugin/views/filter/BooleanOperator.php	Simple filter to handle matching of boolean values.	3	2
BooleanOperator		class	Drupal\views\Plugin\views\filter	core/modules/views/src/Plugin/views/filter/BooleanOperator.php	Simple filter to handle matching of boolean values.	3	2
BooleanOperator		class	Drupal\views\Plugin\views\filter	core/modules/views/src/Plugin/views/filter/BooleanOperator.php	Simple filter to handle matching of boolean values.	3	2
BooleanOperatorString		class	Drupal\views\Plugin\views\filter	core/modules/views/src/Plugin/views/filter/BooleanOperatorString.php	Simple filter to handle matching of boolean values.
BootstrapConfigStorageFactory		class	Drupal\Core\Config	core/lib/Drupal/Core/Config/BootstrapConfigStorageFactory.php	Defines a factory for retrieving the config storage used pre-kernel.		2
BootstrapConfigStorageFactory		class	Drupal\Core\Config	core/lib/Drupal/Core/Config/BootstrapConfigStorageFactory.php	Defines a factory for retrieving the config storage used pre-kernel.		2
Box		class	Drupal\block_content\Plugin\migrate\source\d6	core/modules/block_content/src/Plugin/migrate/source/d6/Box.php	Drupal 6 block source from database.
BoxTest		class	Drupal\Tests\block_content\Kernel\Plugin\migrate\source\d6	core/modules/block_content/tests/src/Kernel/Plugin/migrate/source/d6/BoxTest.php	Tests D6 block boxes source plugin.
BoxTranslation		class	Drupal\block_content\Plugin\migrate\source\d6	core/modules/block_content/src/Plugin/migrate/source/d6/BoxTranslation.php	Drupal 6 i18n custom block translations source from database.
BoxTranslationTest		class	Drupal\Tests\block_content\Kernel\Plugin\migrate\source\d6	core/modules/block_content/tests/src/Kernel/Plugin/migrate/source/d6/BoxTranslationTest.php	Tests i18n custom block translations source plugin.
Breadcrumb		class	Drupal\Core\Breadcrumb	core/lib/Drupal/Core/Breadcrumb/Breadcrumb.php	Used to return generated breadcrumbs with associated cacheability metadata.		12
Breadcrumb		class	Drupal\Core\Breadcrumb	core/lib/Drupal/Core/Breadcrumb/Breadcrumb.php	Used to return generated breadcrumbs with associated cacheability metadata.		12
Breadcrumb404Test		class	Drupal\FunctionalTests\Breadcrumb	core/tests/Drupal/FunctionalTests/Breadcrumb/Breadcrumb404Test.php	Tests the breadcrumb of 404 pages.
BreadcrumbBuilderInterface		interface	Drupal\Core\Breadcrumb	core/lib/Drupal/Core/Breadcrumb/BreadcrumbBuilderInterface.php	Defines an interface for classes that build breadcrumbs.	7	7
BreadcrumbBuilderInterface		interface	Drupal\Core\Breadcrumb	core/lib/Drupal/Core/Breadcrumb/BreadcrumbBuilderInterface.php	Defines an interface for classes that build breadcrumbs.	7	7
BreadcrumbBuilderInterface		interface	Drupal\Core\Breadcrumb	core/lib/Drupal/Core/Breadcrumb/BreadcrumbBuilderInterface.php	Defines an interface for classes that build breadcrumbs.	7	7
BreadcrumbBuilderInterface		interface	Drupal\Core\Breadcrumb	core/lib/Drupal/Core/Breadcrumb/BreadcrumbBuilderInterface.php	Defines an interface for classes that build breadcrumbs.	7	7
BreadcrumbBuilderInterface		interface	Drupal\Core\Breadcrumb	core/lib/Drupal/Core/Breadcrumb/BreadcrumbBuilderInterface.php	Defines an interface for classes that build breadcrumbs.	7	7
BreadcrumbBuilderInterface		interface	Drupal\Core\Breadcrumb	core/lib/Drupal/Core/Breadcrumb/BreadcrumbBuilderInterface.php	Defines an interface for classes that build breadcrumbs.	7	7
BreadcrumbFrontCacheContextsTest		class	Drupal\Tests\system\Functional\Menu	core/modules/system/tests/src/Functional/Menu/BreadcrumbFrontCacheContextsTest.php	Tests breadcrumbs functionality.
BreadcrumbManager		class	Drupal\Core\Breadcrumb	core/lib/Drupal/Core/Breadcrumb/BreadcrumbManager.php	Provides a breadcrumb manager.		1	2
BreadcrumbManager		class	Drupal\Core\Breadcrumb	core/lib/Drupal/Core/Breadcrumb/BreadcrumbManager.php	Provides a breadcrumb manager.		1	2
BreadcrumbManager		class	Drupal\Core\Breadcrumb	core/lib/Drupal/Core/Breadcrumb/BreadcrumbManager.php	Provides a breadcrumb manager.		1	2
BreadcrumbManager		class	Drupal\Core\Breadcrumb	core/lib/Drupal/Core/Breadcrumb/BreadcrumbManager.php	Provides a breadcrumb manager.		1	2
BreadcrumbManager		class	Drupal\Core\Breadcrumb	core/lib/Drupal/Core/Breadcrumb/BreadcrumbManager.php	Provides a breadcrumb manager.		1	2
BreadcrumbManager		class	Drupal\Core\Breadcrumb	core/lib/Drupal/Core/Breadcrumb/BreadcrumbManager.php	Provides a breadcrumb manager.		1	2
BreadcrumbManagerTest		class	Drupal\Tests\Core\Breadcrumb	core/tests/Drupal/Tests/Core/Breadcrumb/BreadcrumbManagerTest.php	@coversDefaultClass \Drupal\Core\Breadcrumb\BreadcrumbManager[[api-linebreak]] @group Breadcrumb
BreadcrumbTest		class	Drupal\Tests\Core\Breadcrumb	core/tests/Drupal/Tests/Core/Breadcrumb/BreadcrumbTest.php	@coversDefaultClass \Drupal\Core\Breadcrumb\Breadcrumb[[api-linebreak]] @group Breadcrumb
BreadcrumbTest		class	Drupal\Tests\system\Functional\Menu	core/modules/system/tests/src/Functional/Menu/BreadcrumbTest.php	Tests breadcrumbs functionality.
BreakLockForm		class	Drupal\views_ui\Form	core/modules/views_ui/src/Form/BreakLockForm.php	Builds the form to break the lock of an edited view.
BreakLockLink		class	Drupal\Core\TempStore\Element	core/lib/Drupal/Core/TempStore/Element/BreakLockLink.php	Provides a link to break a tempstore lock.
Breakpoint		class	Drupal\breakpoint	core/modules/breakpoint/src/Breakpoint.php	Default object used for breakpoint plugins.		1
Breakpoint		class	Drupal\breakpoint	core/modules/breakpoint/src/Breakpoint.php	Default object used for breakpoint plugins.		1
BreakpointDiscoveryTest		class	Drupal\Tests\breakpoint\Kernel	core/modules/breakpoint/tests/src/Kernel/BreakpointDiscoveryTest.php	Tests discovery of breakpoints provided by themes and modules.
BreakpointInterface		interface	Drupal\breakpoint	core/modules/breakpoint/src/BreakpointInterface.php	Interface for Breakpoint plugins.	1	1
BreakpointInterface		interface	Drupal\breakpoint	core/modules/breakpoint/src/BreakpointInterface.php	Interface for Breakpoint plugins.	1	1
BreakpointInterface		interface	Drupal\breakpoint	core/modules/breakpoint/src/BreakpointInterface.php	Interface for Breakpoint plugins.	1	1
BreakpointInterface		interface	Drupal\breakpoint	core/modules/breakpoint/src/BreakpointInterface.php	Interface for Breakpoint plugins.	1	1
BreakpointInterface		interface	Drupal\breakpoint	core/modules/breakpoint/src/BreakpointInterface.php	Interface for Breakpoint plugins.	1	1
BreakpointInterface		interface	Drupal\breakpoint	core/modules/breakpoint/src/BreakpointInterface.php	Interface for Breakpoint plugins.	1	1
BreakpointManager		class	Drupal\breakpoint	core/modules/breakpoint/src/BreakpointManager.php	Defines a breakpoint plugin manager to deal with breakpoints.			2
BreakpointManager		class	Drupal\breakpoint	core/modules/breakpoint/src/BreakpointManager.php	Defines a breakpoint plugin manager to deal with breakpoints.			2
BreakpointManager		class	Drupal\breakpoint	core/modules/breakpoint/src/BreakpointManager.php	Defines a breakpoint plugin manager to deal with breakpoints.			2
BreakpointManagerInterface		interface	Drupal\breakpoint	core/modules/breakpoint/src/BreakpointManagerInterface.php	Defines an interface for breakpoint managers.	1	1
BreakpointManagerInterface		interface	Drupal\breakpoint	core/modules/breakpoint/src/BreakpointManagerInterface.php	Defines an interface for breakpoint managers.	1	1
BreakpointManagerInterface		interface	Drupal\breakpoint	core/modules/breakpoint/src/BreakpointManagerInterface.php	Defines an interface for breakpoint managers.	1	1
BreakpointManagerInterface		interface	Drupal\breakpoint	core/modules/breakpoint/src/BreakpointManagerInterface.php	Defines an interface for breakpoint managers.	1	1
BreakpointManagerInterface		interface	Drupal\breakpoint	core/modules/breakpoint/src/BreakpointManagerInterface.php	Defines an interface for breakpoint managers.	1	1
BreakpointManagerInterface		interface	Drupal\breakpoint	core/modules/breakpoint/src/BreakpointManagerInterface.php	Defines an interface for breakpoint managers.	1	1
BreakpointTest		class	Drupal\Tests\breakpoint\Unit	core/modules/breakpoint/tests/src/Unit/BreakpointTest.php	@coversDefaultClass \Drupal\breakpoint\Breakpoint[[api-linebreak]] @group Breakpoint

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