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DublinCore implements JsonSerializable uses ThingTrait, DublinCoreTrait, DublinCore

The DCMI Metadata Terms.

Tags
see
https://www.dublincore.org/specifications/dublin-core/dcmi-terms/

Table of Contents

Interfaces

JsonSerializable

Constants

ABSTRACT  = 'abstract'
ACCESS_RIGHT  = 'accessRight'
ACCRUAL_METHOD  = 'accrualMethod'
ACCRUAL_PERIODICITY_MORE  = 'accrualPeriodicityMore'
ACCRUAL_POLICY  = 'accrualPolicy'
ALTERNATIVE  = 'alternative'
AVAILABLE  = 'available'
BIBLIOGRAPHIC_CITATION  = 'bibliographicCitation'
CONFORMS_TO  = 'conformsTo'
CONTEXT  = 'http://purl.org/dc'
JSON-LD @context declaration for Schema.org.
CONTRIBUTOR  = 'contributor'
COVERAGE  = 'coverage'
CREATED  = 'created'
CREATOR  = 'creator'
DATE  = 'date'
DATE_ACCEPTED  = 'dateAccepted'
DATE_COPYRIGHTED  = 'dateCopyrighted'
DATE_SUBMITTED  = 'dateSubmitted'
DESCRIPTION  = 'description'
EDUCATION_LEVEL  = 'educationLevel'
EXTENT  = 'extent'
FORMAT  = 'format'
HAS_FORMAT  = 'hasFormat'
HAS_VERSION  = 'hasVersion'
IDENTIFIER  = 'identifier'
INSTRUCTIONAL_METHOD_MORE  = 'instructionalMethodMore'
IS_FORMAT_OF  = 'isFormatOf'
IS_PART_OF  = 'isPartOf'
IS_REFERENCED_BY  = 'isReferencedBy'
IS_REPLACED_BY  = 'isReplacedBy'
IS_REQUIRED_BY  = 'isRequiredBy'
IS_VERSION_OF  = 'isVersionOf'
ISSUED  = 'issued'
LANGUAGE  = 'language'
LICENSE  = 'license'
MEDIATOR  = 'mediator'
MEDIUM  = 'medium'
MODIFIED  = 'modified'
PROVENANCE  = 'provenance'
PUBLISHER  = 'publisher'
REFERENCES  = 'references'
RELATION  = 'relation'
REPLACES  = 'replaces'
REQUIRES  = 'requires'
RIGHTS  = 'rights'
RIGHTS_HOLDER  = 'rightsHolder'
SOURCE  = 'source'
SPATIAL  = 'spatial'
SUBJECT  = 'subject'
TABLE_OF_CONTENTS  = 'tableOfContents'
TEMPORAL  = 'temporal'
TITLE  = 'title'
TYPE  = 'type'
VALID  = 'valid'

Properties

$abstract  : string|null
A summary of the resource.
$accessRight  : string|null
Information about who access the resource or an indication of its security status.
$accrualMethod  : string|null
The method by which items are added to a collection.
$accrualPeriodicityMore  : string|null
The frequency with which items are added to a collection.
$accrualPolicy  : string|null
The policy governing the addition of items to a collection.
$alternative  : string|null
An alternative name for the resource.
$available  : string|null
Date that the resource became or will become available.
$bibliographicCitation  : string|null
A bibliographic reference for the resource.
$conformsTo  : string|null
An established standard to which the described resource conforms.
$contributor  : string|null
An entity responsible for making contributions to the resource.
$coverage  : string|null
The spatial or temporal topic of the resource, spatial applicability of the resource, or jurisdiction under which the resource is relevant.
$created  : string|null
Date of creation of the resource.
$creator  : string|object|array<string|int, mixed>|null
An entity responsible for making the resource.
$date  : string|null
A point or period of time associated with an event in the lifecycle of the resource.
$dateAccepted  : string|null
Date of acceptance of the resource.
$dateCopyrighted  : string|null
Date of copyright of the resource.
$dateSubmitted  : string|null
Date of submission of the resource.
$description  : string|null
An account of the resource.
$educationLevel  : string|null
Audience Education Level
$extent  : string|null
The size or duration of the resource.
$format  : string|null
The file format, physical medium, or dimensions of the resource.
$hasFormat  : string|array<string|int, mixed>|object|null
Has Format
$hasVersion  : string|array<string|int, mixed>|object|null
A related resource that is a version, edition, or adaptation of the described resource.
$identifier  : string|null
An unambiguous reference to the resource within a given context.
$instructionalMethodMore  : string|object|null
A process, used to engender knowledge, attitudes and skills, that the described resource is designed to support.
$isFormatOf  : string|object|null
A pre-existing related resource that is substantially the same as the described resource, but in another format.
$isPartOf  : string|object|null
A related resource in which the described resource is physically or logically included.
$isReferencedBy  : string|object|null
A related resource that references, cites, or otherwise points to the described resource.
$isReplacedBy  : string|object|null
A related resource that supplants, displaces, or supersedes the described resource.
$isRequiredBy  : string|object|array<string|int, mixed>|null
A related resource that requires the described resource to support its function, delivery, or coherence.
$issued  : string|null
Date of formal issuance of the resource.
$isVersionOf  : string|object|null
A related resource of which the described resource is a version, edition, or adaptation.
$language  : string|array<string|int, mixed>|object|null
A language of the resource.
$license  : string|null
A legal document giving official permission to do something with the resource.
$mediator  : string|object|array<string|int, mixed>|null
An entity that mediates access to the resource.
$medium  : string|object|array<string|int, mixed>|null
The material or physical carrier of the resource.
$modified  : string|null
Date on which the resource was changed.
$provenance  : string|array<string|int, mixed>|object|null
A statement of any changes in ownership and custody of the resource since its creation that are significant for its authenticity, integrity, and interpretation.
$publisher  : string|object|array<string|int, mixed>|null
An entity responsible for making the resource available.
$references  : string|object|array<string|int, mixed>|null
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
$relation  : string|object|array<string|int, mixed>|null
A related resource.
$replaces  : string|object|array<string|int, mixed>|null
A related resource that is supplanted, displaced, or superseded by the described resource.
$requires  : string|object|array<string|int, mixed>|null
A related resource that is required by the described resource to support its function, delivery, or coherence.
$rights  : string|object|array<string|int, mixed>|null
Information about rights held in and over the resource.
$rightsHolder  : string|object|array<string|int, mixed>|null
A person or organization owning or managing rights over the resource.
$source  : string|object|array<string|int, mixed>|null
A related resource from which the described resource is derived.
$spatial  : string|object|array<string|int, mixed>|null
Spatial characteristics of the resource.
$subject  : string|object|array<string|int, mixed>|null
A topic of the resource.
$tableOfContents  : string|array<string|int, mixed>|object|null
A list of subunits of the resource.
$temporal  : string|array<string|int, mixed>|object|null
Temporal characteristics of the resource.
$title  : string|object|array<string|int, mixed>|null
The title of the ressource.
$type  : string|object|null
The nature or genre of the resource.
$valid  : string|null
Date (often a range) of validity of a resource.
$atContext  : string|null
The JSON-LD `@context` value.
$atType  : string|null
The JSON-LD `@type` value.

Methods

__construct()  : mixed
Constructor to hydrate public properties from an array or stdClass.
jsonSerialize()  : array<string|int, mixed>
Serializes the current object into a JSON-LD array.
withAtContext()  : $this
Sets the internal JSON-LD `@context` attribute.
withAtType()  : $this
Sets the internal JSON-LD `@type` attribute.
withJSONLDMeta()  : $this
Initializes both JSON-LD metadata: `@type` and `@context`.

Constants

ACCESS_RIGHT

public mixed ACCESS_RIGHT = 'accessRight'

ACCRUAL_METHOD

public mixed ACCRUAL_METHOD = 'accrualMethod'

ACCRUAL_PERIODICITY_MORE

public mixed ACCRUAL_PERIODICITY_MORE = 'accrualPeriodicityMore'

ACCRUAL_POLICY

public mixed ACCRUAL_POLICY = 'accrualPolicy'

ALTERNATIVE

public mixed ALTERNATIVE = 'alternative'

BIBLIOGRAPHIC_CITATION

public mixed BIBLIOGRAPHIC_CITATION = 'bibliographicCitation'

CONFORMS_TO

public mixed CONFORMS_TO = 'conformsTo'

CONTEXT

JSON-LD @context declaration for Schema.org.

public mixed CONTEXT = 'http://purl.org/dc'

CONTRIBUTOR

public mixed CONTRIBUTOR = 'contributor'

DATE_ACCEPTED

public mixed DATE_ACCEPTED = 'dateAccepted'

DATE_COPYRIGHTED

public mixed DATE_COPYRIGHTED = 'dateCopyrighted'

DATE_SUBMITTED

public mixed DATE_SUBMITTED = 'dateSubmitted'

DESCRIPTION

public mixed DESCRIPTION = 'description'

EDUCATION_LEVEL

public mixed EDUCATION_LEVEL = 'educationLevel'

HAS_FORMAT

public mixed HAS_FORMAT = 'hasFormat'

HAS_VERSION

public mixed HAS_VERSION = 'hasVersion'

IDENTIFIER

public mixed IDENTIFIER = 'identifier'

INSTRUCTIONAL_METHOD_MORE

public mixed INSTRUCTIONAL_METHOD_MORE = 'instructionalMethodMore'

IS_FORMAT_OF

public mixed IS_FORMAT_OF = 'isFormatOf'

IS_REFERENCED_BY

public mixed IS_REFERENCED_BY = 'isReferencedBy'

IS_REPLACED_BY

public mixed IS_REPLACED_BY = 'isReplacedBy'

IS_REQUIRED_BY

public mixed IS_REQUIRED_BY = 'isRequiredBy'

IS_VERSION_OF

public mixed IS_VERSION_OF = 'isVersionOf'

PROVENANCE

public mixed PROVENANCE = 'provenance'

REFERENCES

public mixed REFERENCES = 'references'

RIGHTS_HOLDER

public mixed RIGHTS_HOLDER = 'rightsHolder'

TABLE_OF_CONTENTS

public mixed TABLE_OF_CONTENTS = 'tableOfContents'

Properties

$accessRight

Information about who access the resource or an indication of its security status.

public string|null $accessRight

$accrualMethod

The method by which items are added to a collection.

public string|null $accrualMethod

$accrualPeriodicityMore

The frequency with which items are added to a collection.

public string|null $accrualPeriodicityMore

$accrualPolicy

The policy governing the addition of items to a collection.

public string|null $accrualPolicy

$alternative

An alternative name for the resource.

public string|null $alternative

$available

Date that the resource became or will become available.

public string|null $available

$bibliographicCitation

A bibliographic reference for the resource.

public string|null $bibliographicCitation

$conformsTo

An established standard to which the described resource conforms.

public string|null $conformsTo

$contributor

An entity responsible for making contributions to the resource.

public string|null $contributor

$coverage

The spatial or temporal topic of the resource, spatial applicability of the resource, or jurisdiction under which the resource is relevant.

public string|null $coverage

$created

Date of creation of the resource.

public string|null $created

Recommended practice is to describe the date, date/time, or period of time as recommended for the property Date, of which this is a subproperty.

$creator

An entity responsible for making the resource.

public string|object|array<string|int, mixed>|null $creator

$date

A point or period of time associated with an event in the lifecycle of the resource.

public string|null $date

$dateAccepted

Date of acceptance of the resource.

public string|null $dateAccepted

$dateCopyrighted

Date of copyright of the resource.

public string|null $dateCopyrighted

$dateSubmitted

Date of submission of the resource.

public string|null $dateSubmitted

$description

An account of the resource.

public string|null $description

$educationLevel

Audience Education Level

public string|null $educationLevel

$extent

The size or duration of the resource.

public string|null $extent

Recommended practice is to specify the file size in megabytes and duration in ISO 8601 format

$format

The file format, physical medium, or dimensions of the resource.

public string|null $format

$hasFormat

Has Format

public string|array<string|int, mixed>|object|null $hasFormat

$hasVersion

A related resource that is a version, edition, or adaptation of the described resource.

public string|array<string|int, mixed>|object|null $hasVersion

$identifier

An unambiguous reference to the resource within a given context.

public string|null $identifier

$instructionalMethodMore

A process, used to engender knowledge, attitudes and skills, that the described resource is designed to support.

public string|object|null $instructionalMethodMore

$isFormatOf

A pre-existing related resource that is substantially the same as the described resource, but in another format.

public string|object|null $isFormatOf

$isPartOf

A related resource in which the described resource is physically or logically included.

public string|object|null $isPartOf

$isReferencedBy

A related resource that references, cites, or otherwise points to the described resource.

public string|object|null $isReferencedBy

$isReplacedBy

A related resource that supplants, displaces, or supersedes the described resource.

public string|object|null $isReplacedBy

$isRequiredBy

A related resource that requires the described resource to support its function, delivery, or coherence.

public string|object|array<string|int, mixed>|null $isRequiredBy

$issued

Date of formal issuance of the resource.

public string|null $issued

Recommended practice is to describe the date, date/time, or period of time as recommended for the property Date, of which this is a subproperty.

$isVersionOf

A related resource of which the described resource is a version, edition, or adaptation.

public string|object|null $isVersionOf

$language

A language of the resource.

public string|array<string|int, mixed>|object|null $language

$license

A legal document giving official permission to do something with the resource.

public string|null $license

$mediator

An entity that mediates access to the resource.

public string|object|array<string|int, mixed>|null $mediator

$medium

The material or physical carrier of the resource.

public string|object|array<string|int, mixed>|null $medium

$modified

Date on which the resource was changed.

public string|null $modified

Recommended practice is to describe the date, date/time, or period of time as recommended for the property Date, of which this is a subproperty.

$provenance

A statement of any changes in ownership and custody of the resource since its creation that are significant for its authenticity, integrity, and interpretation.

public string|array<string|int, mixed>|object|null $provenance

$publisher

An entity responsible for making the resource available.

public string|object|array<string|int, mixed>|null $publisher

$references

A related resource that is referenced, cited, or otherwise pointed to by the described resource.

public string|object|array<string|int, mixed>|null $references

This property is intended to be used with non-literal values. This property is an inverse property of Is Referenced By.

$relation

A related resource.

public string|object|array<string|int, mixed>|null $relation

This property is intended to be used with non-literal values. This property is an inverse property of Is Replaced By.

$replaces

A related resource that is supplanted, displaced, or superseded by the described resource.

public string|object|array<string|int, mixed>|null $replaces

Recommended practice is to identify the related resource by means of a URI. If this is not possible or feasible, a string conforming to a formal identification system may be provided.

$requires

A related resource that is required by the described resource to support its function, delivery, or coherence.

public string|object|array<string|int, mixed>|null $requires

This property is intended to be used with non-literal values. This property is an inverse property of Is Required By.

$rights

Information about rights held in and over the resource.

public string|object|array<string|int, mixed>|null $rights

$rightsHolder

A person or organization owning or managing rights over the resource.

public string|object|array<string|int, mixed>|null $rightsHolder

$source

A related resource from which the described resource is derived.

public string|object|array<string|int, mixed>|null $source

$spatial

Spatial characteristics of the resource.

public string|object|array<string|int, mixed>|null $spatial

$subject

A topic of the resource.

public string|object|array<string|int, mixed>|null $subject

Recommended practice is to refer to the subject with a URI. If this is not possible or feasible, a literal value that identifies the subject may be provided.

Both should preferably refer to a subject in a controlled vocabulary.

$tableOfContents

A list of subunits of the resource.

public string|array<string|int, mixed>|object|null $tableOfContents

$temporal

Temporal characteristics of the resource.

public string|array<string|int, mixed>|object|null $temporal

$title

The title of the ressource.

public string|object|array<string|int, mixed>|null $title

$type

The nature or genre of the resource.

public string|object|null $type

$valid

Date (often a range) of validity of a resource.

public string|null $valid

Recommended practice is to describe the date, date/time, or period of time as recommended for the property Date, of which this is a subproperty.

$atContext

The JSON-LD `@context` value.

private string|null $atContext = null

Default is https://schema.org.

$atType

The JSON-LD `@type` value.

private string|null $atType = null

This can be manually set or automatically inferred from the class name.

Methods

__construct()

Constructor to hydrate public properties from an array or stdClass.

public __construct([array<string|int, mixed>|object|null $init = null ]) : mixed

This allows objects to be quickly populated with associative data without manually setting each property.

Parameters
$init : array<string|int, mixed>|object|null = null

A data array or object used to initialize the instance. Keys must match public property names.

Tags
throws
ReflectionException
example
use org\schema\Person;
use org\schema\constants\Prop;

$person = new Person
([
    Prop::NAME => 'Jane Doe',
    Prop::URL  => 'https://example.com/janedoe'
]);

echo $person->name; // Outputs: Jane Doe

jsonSerialize()

Serializes the current object into a JSON-LD array.

public jsonSerialize() : array<string|int, mixed>

Includes public properties, the JSON-LD @context and @type. Null values are automatically removed.

Tags
throws
ReflectionException

If reflection fails when accessing properties.

example
use org\schema\Person;
use org\schema\constants\Prop;

$person = new Person
([
    Prop::NAME => 'John Smith',
    Prop::ID   => 'jsmith-001'
]);

echo json_encode($person, JSON_PRETTY_PRINT);

Output:

{
   "@type": "Person",
   "@context": "https://schema.org",
   "id": "jsmith-001",
   "name": "John Smith"
}
Return values
array<string|int, mixed>

JSON-LD representation of the object.

withAtContext()

Sets the internal JSON-LD `@context` attribute.

public withAtContext(string $context) : $this

Useful if you need a custom JSON-LD context.

Parameters
$context : string
Return values
$this

withAtType()

Sets the internal JSON-LD `@type` attribute.

public withAtType(string $type) : $this

Allows overriding the default type inferred from the class.

Parameters
$type : string
Return values
$this

withJSONLDMeta()

Initializes both JSON-LD metadata: `@type` and `@context`.

public withJSONLDMeta([string|null $atType = null ][, string|null $atContext = null ]) : $this

Can be called from constructor or later to override default values.

Parameters
$atType : string|null = null

Optional JSON-LD type

$atContext : string|null = null

Optional JSON-LD context

Return values
$this

        
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