Classes, traits, and interfaces - Drupal 11.1.x - Drupal Core
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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
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core/
core.api.php, line 1518
| Name | Deprecated | Object type | Namespace | File name | Summary | Direct uses | Use statements | Strings |
|---|---|---|---|---|---|---|---|---|
| RequiredStateMissingException | class | Drupal\workflows\Exception | core/ |
Indicates that a workflow does not contain a required state. | 1 | |||
| RequireEventTrait | trait | Drupal\package_manager\Event | core/ |
Common methods for pre- and post-require events. | ||||
| RequireExplicitAssertionSniff | class | SlevomatCodingStandard\Sniffs\PHP | vendor/ |
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| RequireExplicitBooleanOperatorPrecedenceSniff | class | PHP_CodeSniffer\Standards\Generic\Sniffs\CodeAnalysis | vendor/ |
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| RequireExtendsTagValueNode | class | PHPStan\PhpDocParser\Ast\PhpDoc | vendor/ |
1 | ||||
| RequireImplementsTagValueNode | class | PHPStan\PhpDocParser\Ast\PhpDoc | vendor/ |
1 | ||||
| Requirement | abstract class | PHPUnit\Metadata\Version | vendor/ |
@psalm-immutable | 2 | 4 | ||
| Requirement | interface | PharIo\Manifest | vendor/ |
2 | ||||
| RequirementCollection | class | PharIo\Manifest | vendor/ |
@template-implements IteratorAggregate<int,Requirement> | ||||
| RequirementCollectionIterator | class | PharIo\Manifest | vendor/ |
@template-implements Iterator<int,Requirement> | ||||
| Requirements | final class | PHPUnit\Metadata\Api | vendor/ |
@no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit | 3 | |||
| RequirementsException | class | Drupal\migrate\Exception | core/ |
Defines an exception thrown when a migration does not meet the requirements. | 19 | |||
| RequirementsInterface | interface | Drupal\migrate\Plugin | core/ |
An interface to check for a migrate plugin requirements. | 3 | 5 | ||
| RequireMultiLineCallSniff | class | SlevomatCodingStandard\Sniffs\Functions | vendor/ |
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| RequireMultiLineConditionSniff | class | SlevomatCodingStandard\Sniffs\ControlStructures | vendor/ |
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| RequireMultiLineMethodSignatureSniff | class | SlevomatCodingStandard\Sniffs\Classes | vendor/ |
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| RequireMultiLineTernaryOperatorSniff | class | SlevomatCodingStandard\Sniffs\ControlStructures | vendor/ |
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| RequireNonCapturingCatchSniff | class | SlevomatCodingStandard\Sniffs\Exceptions | vendor/ |
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| RequireNowdocSniff | class | SlevomatCodingStandard\Sniffs\PHP | vendor/ |
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| RequireNullCoalesceEqualOperatorSniff | class | SlevomatCodingStandard\Sniffs\ControlStructures | vendor/ |
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| RequireNullCoalesceOperatorSniff | class | SlevomatCodingStandard\Sniffs\ControlStructures | vendor/ |
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| RequireNullSafeObjectOperatorSniff | class | SlevomatCodingStandard\Sniffs\ControlStructures | vendor/ |
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| RequireNumericLiteralSeparatorSniff | class | SlevomatCodingStandard\Sniffs\Numbers | vendor/ |
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| RequireOneLineDocCommentSniff | class | SlevomatCodingStandard\Sniffs\Commenting | vendor/ |
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| RequireOneLinePropertyDocCommentSniff | class | SlevomatCodingStandard\Sniffs\Commenting | vendor/ |
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| RequireOneNamespaceInFileSniff | class | SlevomatCodingStandard\Sniffs\Namespaces | vendor/ |
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| RequireOnlyStandaloneIncrementAndDecrementOperatorsSniff | class | SlevomatCodingStandard\Sniffs\Operators | vendor/ |
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| RequiresElement | class | PharIo\Manifest | vendor/ |
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| RequireSelfReferenceSniff | class | SlevomatCodingStandard\Sniffs\Classes | vendor/ |
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| RequiresFunction | final class | PHPUnit\Metadata | vendor/ |
@psalm-immutable | 1 | |||
| RequiresFunction | final class | PHPUnit\Framework\Attributes | vendor/ |
@psalm-immutable | 1 | |||
| RequireShortTernaryOperatorSniff | class | SlevomatCodingStandard\Sniffs\ControlStructures | vendor/ |
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| RequireSingleLineCallSniff | class | SlevomatCodingStandard\Sniffs\Functions | vendor/ |
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| RequireSingleLineConditionSniff | class | SlevomatCodingStandard\Sniffs\ControlStructures | vendor/ |
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| RequireSingleLineMethodSignatureSniff | class | SlevomatCodingStandard\Sniffs\Classes | vendor/ |
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| RequiresMethod | final class | PHPUnit\Metadata | vendor/ |
@psalm-immutable | 1 | |||
| RequiresMethod | final class | PHPUnit\Framework\Attributes | vendor/ |
@psalm-immutable | 1 | |||
| RequiresOperatingSystem | final class | PHPUnit\Metadata | vendor/ |
@psalm-immutable | 1 | |||
| RequiresOperatingSystem | final class | PHPUnit\Framework\Attributes | vendor/ |
@psalm-immutable | 1 | |||
| RequiresOperatingSystemFamily | final class | PHPUnit\Framework\Attributes | vendor/ |
@psalm-immutable | 1 | |||
| RequiresOperatingSystemFamily | final class | PHPUnit\Metadata | vendor/ |
@psalm-immutable | 1 | |||
| RequiresPhp | final class | PHPUnit\Framework\Attributes | vendor/ |
@psalm-immutable | 1 | |||
| RequiresPhp | final class | PHPUnit\Metadata | vendor/ |
@psalm-immutable | 1 | |||
| RequiresPhpExtension | final class | PHPUnit\Framework\Attributes | vendor/ |
@psalm-immutable | 1 | |||
| RequiresPhpExtension | final class | PHPUnit\Metadata | vendor/ |
@psalm-immutable | 1 | |||
| RequiresPhpunit | final class | PHPUnit\Framework\Attributes | vendor/ |
@psalm-immutable | 1 | |||
| RequiresPhpunit | final class | PHPUnit\Metadata | vendor/ |
@psalm-immutable | 1 | |||
| RequiresSetting | final class | PHPUnit\Metadata | vendor/ |
@psalm-immutable | 1 | |||
| RequiresSetting | final class | PHPUnit\Framework\Attributes | vendor/ |
@psalm-immutable | 1 | |||
| RequireStrictTypesSniff | class | PHP_CodeSniffer\Standards\Generic\Sniffs\PHP | vendor/ |