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
NamedArgumentSpacingSniff		class	SlevomatCodingStandard\Sniffs\Functions	vendor/slevomat/coding-standard/SlevomatCodingStandard/Sniffs/Functions/NamedArgumentSpacingSniff.php
NamedColoursSniff		class	PHP_CodeSniffer\Standards\Squiz\Sniffs\CSS	vendor/squizlabs/php_codesniffer/src/Standards/Squiz/Sniffs/CSS/NamedColoursSniff.php
NameDeprecation		class	Twig\Node	vendor/twig/twig/src/Node/NameDeprecation.php	Represents a deprecation for a named node or attribute on a Node.		3
NamedParameterMap		class	Ramsey\Collection\Map	vendor/ramsey/collection/src/Map/NamedParameterMap.php	`NamedParameterMap` represents a mapping of values to a set of named keys that may optionally be typed
NamedSelector		class	Behat\Mink\Selector	vendor/behat/mink/src/Selector/NamedSelector.php	Named selectors engine. Uses registered XPath selectors to create new expressions.	2
NameException		class	Ramsey\Uuid\Exception	vendor/ramsey/uuid/src/Exception/NameException.php	Thrown to indicate that an error occurred while attempting to hash a namespace and name		2
NameExpression		class	Twig\Node\Expression	vendor/twig/twig/src/Node/Expression/NameExpression.php		2	12
NameFilterIterator		final class	PHPUnit\Runner\Filter	vendor/phpunit/phpunit/src/Runner/Filter/NameFilterIterator.php	@no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit
NameGenerator		class	Prophecy\Doubler	vendor/phpspec/prophecy/src/Prophecy/Doubler/NameGenerator.php	Name generator. Generates classname for double.
NameGeneratorFactory		class	Ramsey\Uuid\Generator	vendor/ramsey/uuid/src/Generator/NameGeneratorFactory.php	NameGeneratorFactory retrieves a default name generator, based on the environment		1
NameGeneratorInterface		interface	Ramsey\Uuid\Generator	vendor/ramsey/uuid/src/Generator/NameGeneratorInterface.php	A name generator generates strings of binary data created by hashing together a namespace with a name, according to a hashing algorithm	2	2
NamePart		class	Google\Protobuf\Internal\UninterpretedOption	vendor/google/protobuf/src/Google/Protobuf/Internal/UninterpretedOption/NamePart.php	The name of the uninterpreted option. Each string represents a segment in a dot-separated name. is_extension is true iff a segment represents an extension (denoted with parentheses in options specs in .proto files). E.g.,{ ["foo", false],…
NamePrettifier		final class	PHPUnit\Logging\TestDox	vendor/phpunit/phpunit/src/Logging/TestDox/NamePrettifier.php	@no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit		1
NameResolver		class	PhpParser\NodeVisitor	vendor/nikic/php-parser/lib/PhpParser/NodeVisitor/NameResolver.php			2
NamespaceCheck		final class	mglaman\PHPStanDrupal\Internal	vendor/mglaman/phpstan-drupal/src/Internal/NamespaceCheck.php	@internal		1
NamespacedDependencySniff		class	DrupalPractice\Sniffs\InfoFiles	vendor/drupal/coder/coder_sniffer/DrupalPractice/Sniffs/InfoFiles/NamespacedDependencySniff.php	Checks that all declared dependencies are namespaced.
NamespaceDeclarationSniff		class	SlevomatCodingStandard\Sniffs\Namespaces	vendor/slevomat/coding-standard/SlevomatCodingStandard/Sniffs/Namespaces/NamespaceDeclarationSniff.php
NamespaceDeclarationSniff		class	PHP_CodeSniffer\Standards\PSR2\Sniffs\Namespaces	vendor/squizlabs/php_codesniffer/src/Standards/PSR2/Sniffs/Namespaces/NamespaceDeclarationSniff.php
NamespaceHelper		class	SlevomatCodingStandard\Helpers	vendor/slevomat/coding-standard/SlevomatCodingStandard/Helpers/NamespaceHelper.php	Terms "unqualified", "qualified" and "fully qualified" have the same meaning as described here: http://php.net/manual/en/language.namespaces.rules.php		21
NamespaceNotFoundException		class	Symfony\Component\Console\Exception	vendor/symfony/console/Exception/NamespaceNotFoundException.php	Represents an incorrect namespace typed in the console.		1
NamespaceSniff		class	Drupal\Sniffs\WhiteSpace	vendor/drupal/coder/coder_sniffer/Drupal/Sniffs/WhiteSpace/NamespaceSniff.php	Checks that there is exactly one space after the namespace keyword.
NamespaceSpacingSniff		class	SlevomatCodingStandard\Sniffs\Namespaces	vendor/slevomat/coding-standard/SlevomatCodingStandard/Sniffs/Namespaces/NamespaceSpacingSniff.php
NamespaceUri		class	TheSeer\Tokenizer	vendor/theseer/tokenizer/src/NamespaceUri.php			1
NamespaceUriException		class	TheSeer\Tokenizer	vendor/theseer/tokenizer/src/NamespaceUriException.php
Namespace_		class	PhpParser\Node\Stmt	vendor/nikic/php-parser/lib/PhpParser/Node/Stmt/Namespace_.php			1
Namespace_		class	PhpParser\Builder	vendor/nikic/php-parser/lib/PhpParser/Builder/Namespace_.php
Namespace_		class	PhpParser\Node\Scalar\MagicConst	vendor/nikic/php-parser/lib/PhpParser/Node/Scalar/MagicConst/Namespace_.php
NativeCalculator		class	Brick\Math\Internal\Calculator	vendor/brick/math/src/Internal/Calculator/NativeCalculator.php	Calculator implementation using only native PHP code.
NativeFileSessionHandler		class	Symfony\Component\HttpFoundation\Session\Storage\Handler	vendor/symfony/http-foundation/Session/Storage/Handler/NativeFileSessionHandler.php	Native session handler using PHP's built in file storage.
NativeSessionStorage		class	Symfony\Component\HttpFoundation\Session\Storage	vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php	This provides a base class for session attribute storage.	2	2
NativeSessionStorageFactory		class	Symfony\Component\HttpFoundation\Session\Storage	vendor/symfony/http-foundation/Session/Storage/NativeSessionStorageFactory.php	@author Jérémy Derussé <jeremy@derusse.com>
NativeTransportFactory		final class	Symfony\Component\Mailer\Transport	vendor/symfony/mailer/Transport/NativeTransportFactory.php	Factory that configures a transport (sendmail or SMTP) based on php.ini settings.		1
NavigationContentLinks		final class	Drupal\navigation	core/modules/navigation/src/NavigationContentLinks.php	Build the menu links for the Content menu.		1
NavigationHooks		class	Drupal\navigation\Hook	core/modules/navigation/src/Hook/NavigationHooks.php	Hook implementations for navigation.
NavigationLayout		final class	Drupal\navigation	core/modules/navigation/src/NavigationLayout.php	Defines a layout class for navigation.			1
NavigationLinkBlock		final class	Drupal\navigation\Plugin\Block	core/modules/navigation/src/Plugin/Block/NavigationLinkBlock.php	Defines a link navigation block.
NavigationMenuBlock		final class	Drupal\navigation\Plugin\Block	core/modules/navigation/src/Plugin/Block/NavigationMenuBlock.php	Provides a generic menu navigation block.
NavigationMenuLinkTree		final class	Drupal\navigation\Menu	core/modules/navigation/src/Menu/NavigationMenuLinkTree.php	Extends MenuLinkTree to add specific theme suggestions for the navigation.			2
NavigationRenderer		final class	Drupal\navigation	core/modules/navigation/src/NavigationRenderer.php	Handle rendering for different pieces of the navigation.		3	2
NavigationSectionStorage		final class	Drupal\navigation\Plugin\SectionStorage	core/modules/navigation/src/Plugin/SectionStorage/NavigationSectionStorage.php	Provides navigation section storage.		2
NavigationServiceProvider		final class	Drupal\navigation	core/modules/navigation/src/NavigationServiceProvider.php	Defines a service provider for the Navigation module.
NavigationShortcutsBlock		final class	Drupal\navigation\Plugin\Block	core/modules/navigation/src/Plugin/Block/NavigationShortcutsBlock.php	Defines a shortcuts navigation block class.
NavigationTopBarHooks		class	Drupal\navigation_top_bar\Hook	core/modules/navigation/modules/navigation_top_bar/src/Hook/NavigationTopBarHooks.php	Hook implementations for navigation_top_bar.
NavigationUserBlock		final class	Drupal\navigation\Plugin\Block	core/modules/navigation/src/Plugin/Block/NavigationUserBlock.php	Defines a user navigation block.
NearMissValueResolverException		class	Symfony\Component\HttpKernel\Exception	vendor/symfony/http-kernel/Exception/NearMissValueResolverException.php	Lets value resolvers tell when an argument could be under their watch but failed to be resolved.		4
NegationNode		class	Symfony\Component\CssSelector\Node	vendor/symfony/css-selector/Node/NegationNode.php	Represents a "<selector>:not(<identifier>)" node.
NegationOperatorSpacingSniff		class	SlevomatCodingStandard\Sniffs\Operators	vendor/slevomat/coding-standard/SlevomatCodingStandard/Sniffs/Operators/NegationOperatorSpacingSniff.php
Negative		class	Symfony\Component\Validator\Constraints	vendor/symfony/validator/Constraints/Negative.php	Validates that a value is a negative number.
NegativeInteger		final class	phpDocumentor\Reflection\PseudoTypes	vendor/phpdocumentor/type-resolver/src/PseudoTypes/NegativeInteger.php	Value Object representing the type 'int'.		1
NegativeNumberException		class	Brick\Math\Exception	vendor/brick/math/src/Exception/NegativeNumberException.php	Exception thrown when attempting to perform an unsupported operation, such as a square root, on a negative number.		2