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 1531

Name	Deprecated	Object type	Namespace	File name	Summary	Direct uses	Use statements	Strings
ArchiverException		class	Drupal\Core\Archiver	core/lib/Drupal/Core/Archiver/ArchiverException.php	Defines an exception class for Drupal\Core\Archiver\ArchiverInterface.
ArchiverInterface		interface	Drupal\Core\Archiver	core/lib/Drupal/Core/Archiver/ArchiverInterface.php	Defines the common interface for all Archiver classes.	3	1
ArchiverManager		class	Drupal\Core\Archiver	core/lib/Drupal/Core/Archiver/ArchiverManager.php	Provides an Archiver plugin manager.			2
ArchiverTestBase		abstract class	Drupal\KernelTests\Core\Archiver	core/tests/Drupal/KernelTests/Core/Archiver/ArchiverTestBase.php	Provides archive specific assertions and helper properties for archive tests.	2
ArchiveTar		class	Drupal\Core\Archiver	core/lib/Drupal/Core/Archiver/ArchiveTar.php	Extends Pear's Archive_Tar to use exceptions.		4
AreaDisplayLinkTest		class	Drupal\Tests\views\Kernel\Handler	core/modules/views/tests/src/Kernel/Handler/AreaDisplayLinkTest.php	Tests the core views_handler_area_display_link handler.
AreaEmptyTest		class	Drupal\Tests\views\Kernel\Handler	core/modules/views/tests/src/Kernel/Handler/AreaEmptyTest.php	Tests the generic entity area handler.
AreaEntityTest		class	Drupal\Tests\views\Kernel\Handler	core/modules/views/tests/src/Kernel/Handler/AreaEntityTest.php	Tests the generic entity area handler.
AreaEntityUITest		class	Drupal\Tests\views_ui\Functional	core/modules/views_ui/tests/src/Functional/AreaEntityUITest.php	Tests the entity area UI test.
AreaHTTPStatusCodeTest		class	Drupal\Tests\views\Functional\Handler	core/modules/views/tests/src/Functional/Handler/AreaHTTPStatusCodeTest.php	Tests the http_status_code area handler.
AreaMessagesTest		class	Drupal\Tests\views\Kernel\Handler	core/modules/views/tests/src/Kernel/Handler/AreaMessagesTest.php	Tests the messages area handler.
AreaOrderTest		class	Drupal\Tests\views\Kernel\Handler	core/modules/views/tests/src/Kernel/Handler/AreaOrderTest.php	Tests the view area handler.
AreaPluginBase		abstract class	Drupal\views\Plugin\views\area	core/modules/views/src/Plugin/views/area/AreaPluginBase.php	Base class for area handler plugins.	11	4
AreaResultTest		class	Drupal\Tests\views\Kernel\Handler	core/modules/views/tests/src/Kernel/Handler/AreaResultTest.php	Tests the result area handler.
AreaTest		class	Drupal\Tests\views\Kernel\Handler	core/modules/views/tests/src/Kernel/Handler/AreaTest.php	Tests the plugin base of the area handler.
AreaTest		class	Drupal\Tests\views\Functional\Handler	core/modules/views/tests/src/Functional/Handler/AreaTest.php	Tests the plugin base of the area handler.
AreaTextTest		class	Drupal\Tests\views\Kernel\Handler	core/modules/views/tests/src/Kernel/Handler/AreaTextTest.php	Tests the core views_handler_area_text handler.
AreaTextTokenTest		class	Drupal\Tests\views\Kernel\Handler	core/modules/views/tests/src/Kernel/Handler/AreaTextTokenTest.php	Tests the token in text area handler.
AreaTitleTest		class	Drupal\Tests\views\Kernel\Handler	core/modules/views/tests/src/Kernel/Handler/AreaTitleTest.php	Tests the title area handler.
AreaTitleWebTest		class	Drupal\Tests\views\Functional\Handler	core/modules/views/tests/src/Functional/Handler/AreaTitleWebTest.php	Tests the title area handler with a web test.
AreaViewTest		class	Drupal\Tests\views\Kernel\Handler	core/modules/views/tests/src/Kernel/Handler/AreaViewTest.php	Tests the view area handler.
ArgumentDateTest		class	Drupal\Tests\views\Kernel\Handler	core/modules/views/tests/src/Kernel/Handler/ArgumentDateTest.php	Tests the core date argument handlers.
ArgumentDateTimeTest		class	Drupal\Tests\datetime\Kernel\Views	core/modules/datetime/tests/src/Kernel/Views/ArgumentDateTimeTest.php	Tests the Drupal\datetime\Plugin\views\filter\Date handler.
ArgumentDefaultPluginBase		abstract class	Drupal\views\Plugin\views\argument_default	core/modules/views/src/Plugin/views/argument_default/ArgumentDefaultPluginBase.php	The fixed argument default handler; also used as the base.	10	6
ArgumentDefaultTest		class	Drupal\Tests\views\Functional\Plugin	core/modules/views/tests/src/Functional/Plugin/ArgumentDefaultTest.php	Tests pluggable argument_default for views.
ArgumentDefaultTest		class	Drupal\views_test_data\Plugin\views\argument_default	core/modules/views/tests/modules/views_test_data/src/Plugin/views/argument_default/ArgumentDefaultTest.php	Defines an argument default test plugin.		1
ArgumentDefaultTest		class	Drupal\Tests\user\Kernel\Views	core/modules/user/tests/src/Kernel/Views/ArgumentDefaultTest.php	Tests views user argument default plugin.
ArgumentLanguageTest		class	Drupal\Tests\language\Kernel\Views	core/modules/language/tests/src/Kernel/Views/ArgumentLanguageTest.php	Tests the argument language handler.
ArgumentNodeRevisionIdTest		class	Drupal\Tests\node\Kernel\Views	core/modules/node/tests/src/Kernel/Views/ArgumentNodeRevisionIdTest.php	Tests the node_vid handler.
ArgumentNullTest		class	Drupal\Tests\views\Kernel\Handler	core/modules/views/tests/src/Kernel/Handler/ArgumentNullTest.php	Tests the core Drupal\views\Plugin\views\argument\NullArgument handler.
ArgumentPluginBase		abstract class	Drupal\views\Plugin\views\argument	core/modules/views/src/Plugin/views/argument/ArgumentPluginBase.php	Base class for argument (contextual filter) handler plugins.	13	9
ArgumentsAllNull		class	Drupal\Tests\Component\Plugin\Factory	core/tests/Drupal/Tests/Component/Plugin/Factory/ReflectionFactoryTest.php	A stub class used by testGetInstanceArguments().
ArgumentsConfigArrayKey		class	Drupal\Tests\Component\Plugin\Factory	core/tests/Drupal/Tests/Component/Plugin/Factory/ReflectionFactoryTest.php	A stub class used by testGetInstanceArguments().
ArgumentsMany		class	Drupal\Tests\Component\Plugin\Factory	core/tests/Drupal/Tests/Component/Plugin/Factory/ReflectionFactoryTest.php	A stub class used by testGetInstanceArguments().
ArgumentsNoConstructor		class	Drupal\Tests\Component\Plugin\Factory	core/tests/Drupal/Tests/Component/Plugin/Factory/ReflectionFactoryTest.php	A stub class used by testGetInstanceArguments().
ArgumentsPluginId		class	Drupal\Tests\Component\Plugin\Factory	core/tests/Drupal/Tests/Component/Plugin/Factory/ReflectionFactoryTest.php	A stub class used by testGetInstanceArguments().
ArgumentsResolver		class	Drupal\Component\Utility	core/lib/Drupal/Component/Utility/ArgumentsResolver.php	Resolves the arguments to pass to a callable.		3
ArgumentsResolverInterface		interface	Drupal\Component\Utility	core/lib/Drupal/Component/Utility/ArgumentsResolverInterface.php	Resolves the arguments to pass to a callable.	1	1
ArgumentsResolverTest		class	Drupal\Tests\Component\Utility	core/tests/Drupal/Tests/Component/Utility/ArgumentsResolverTest.php	Tests Drupal\Component\Utility\ArgumentsResolver.
ArgumentStringTest		class	Drupal\Tests\views\Kernel\Handler	core/modules/views/tests/src/Kernel/Handler/ArgumentStringTest.php	Tests the core Drupal\views\Plugin\views\argument\StringArgument handler.
ArgumentSummaryTest		class	Drupal\Tests\views\Kernel\Handler	core/modules/views/tests/src/Kernel/Handler/ArgumentSummaryTest.php	Tests the summary of results when an argument is not provided.
ArgumentTransformTermTest		class	Drupal\Tests\taxonomy\Kernel\Views	core/modules/taxonomy/tests/src/Kernel/Views/ArgumentTransformTermTest.php	Tests taxonomy term argument transformation.
ArgumentUidRevisionTest		class	Drupal\Tests\node\Kernel\Views	core/modules/node/tests/src/Kernel/Views/ArgumentUidRevisionTest.php	Tests the argument_node_uid_revision handler.
ArgumentValidateTest		class	Drupal\Tests\user\Kernel\Views	core/modules/user/tests/src/Kernel/Views/ArgumentValidateTest.php	Tests user argument validators for ID and name.
ArgumentValidatorPluginBase		abstract class	Drupal\views\Plugin\views\argument_validator	core/modules/views/src/Plugin/views/argument_validator/ArgumentValidatorPluginBase.php	Base argument validator plugin to provide basic functionality.	4	1
ArgumentValidatorTermNameTest		class	Drupal\Tests\taxonomy\Kernel\Views	core/modules/taxonomy/tests/src/Kernel/Views/ArgumentValidatorTermNameTest.php	Tests the plugin of the taxonomy: taxonomy_term_name argument validator.
ArgumentValidatorTermTest		class	Drupal\Tests\taxonomy\Kernel\Views	core/modules/taxonomy/tests/src/Kernel/Views/ArgumentValidatorTermTest.php	Tests the plugin of the taxonomy: term argument validator.
ArgumentValidatorTest		class	Drupal\Tests\views_ui\Functional	core/modules/views_ui/tests/src/Functional/ArgumentValidatorTest.php	Tests the Argument validator through the UI.
ArgumentValidatorTest		class	Drupal\Tests\views\Kernel\Plugin	core/modules/views/tests/src/Kernel/Plugin/ArgumentValidatorTest.php	Tests Views argument validators.
ArgumentValidatorTest		class	Drupal\views_test_data\Plugin\views\argument_validator	core/modules/views/tests/modules/views_test_data/src/Plugin/views/argument_validator/ArgumentValidatorTest.php	Defines an argument validator test plugin.		1

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