Oihana PHP System

Invoice extends BusinessDocument uses InvoiceTrait

An invoice — the final billing document of the quote → purchase order → invoice cycle, issued once the goods or services have been delivered.

Reuses Schema.org's own Invoice property names (accountId, billingPeriod, broker, category, confirmationNumber, paymentDueDate, paymentStatus, provider, referencesOrder, scheduledPaymentDate) rather than inventing new ones, per this namespace's Schema.org-first naming rule (see Quote::$validThrough).

Deliberately does NOT share a property trait with Invoice, even though both classes hydrate through the same ThingTrait::__construct raw-array path and are therefore equally subject to the null|array|X typing rule documented on BusinessDocument. Two of the candidate properties block a genuinely shared trait:

  • referencesOrder must point at this namespace's own PurchaseOrder (the business document actually being invoiced), not org\schema\Order — the two Invoice classes need incompatible types for the same property name.
  • The mirror's broker/category/billingPeriod unions predate the null|array|X convention and lack array; widening them to fit a shared trait would edit org\schema\Invoice, contradicting this namespace's "mirror stays untouched" rule (see BusinessDocument).

The properties are therefore declared directly here, correctly typed, rather than forcing a partial/asymmetric trait for no real benefit.

$paymentStatus reuses PaymentStatusType and its existing member classes (PaymentComplete, PaymentDue, PaymentDeclined, PaymentPastDue, PaymentAutomaticallyApplied) rather than new constants, following the one-class-per-member convention of the StatusEnumeration family.

Tags
author

Marc Alcaraz (eKameleon)

since
1.3.0

Table of Contents

Constants

ACCOUNT_ID  : string = 'accountId'
ADJUSTMENTS  : string = 'adjustments'
ATTACHMENTS  : string = 'attachments'
AUTHOR  : string = 'author'
BILLING_ADDRESS  : string = 'billingAddress'
BILLING_PERIOD  : string = 'billingPeriod'
BROKER  : string = 'broker'
CATEGORY  : string = 'category'
CONFIRMATION_NUMBER  : string = 'confirmationNumber'
CONTACT  : string = 'contact'
CONTEXT  : string = \xyz\oihana\schema\constants\Oihana::SCHEMA
The @context of the json-ld representation of the thing.
CURRENCY  : string = 'currency'
CUSTOMER  : string = 'customer'
DIRECTION  : string = 'direction'
DOCUMENT_LINES  : string = 'documentLines'
ISSUE_DATE  : string = 'issueDate'
JSON_PRIORITY_KEYS  : array<string|int, mixed> = [\org\schema\constants\Schema::AT_TYPE, \org\sc...
Defines the priority order of keys when serializing the object to JSON-LD.
ORDER_DELIVERY  : string = 'orderDelivery'
PAYMENT_DUE_DATE  : string = 'paymentDueDate'
PAYMENT_STATUS  : string = 'paymentStatus'
PAYMENT_TERMS  : string = 'paymentTerms'
POINT_OF_SALE  : string = 'pointOfSale'
PROVIDER  : string = 'provider'
REFERENCES  : string = 'references'
REFERENCES_ORDER  : string = 'referencesOrder'
SCHEDULED_PAYMENT_DATE  : string = 'scheduledPaymentDate'
SELLER  : string = 'seller'
STATUS  : string = 'status'
TAXES  : string = 'taxes'
TOTALS  : string = 'totals'

Properties

$_from  : string|null
The metadata to indicates the edge 'from' identifier.
$_id  : null|string
The metadata identifier of the item.
$_key  : null|string
The metadata unique key identifier of the thing.
$_rev  : null|string
The metadata revision value of the thing.
$_to  : string|null
The metadata to indicates the edge 'to' identifier.
$accountId  : string|null
The identifier for the account the payment will be applied to.
$active  : bool|null
The visibility flag.
$additionalType  : array<string|int, mixed>|string|null|object
An additionalType for the item.
$adjustments  : null|array<string|int, mixed>|Adjustment
The document-level adjustments (discounts, surcharges, shipping fees, packaging...) applying to the whole document, as opposed to a specific line's {@see BusinessDocumentLine::$adjustments}.
$alternateName  : string|object|array<string|int, mixed>|null
An alias for the item.
$attachments  : null|array<string|int, mixed>|string|MediaObject
Files attached to the document (e.g. a signed PDF, supporting documents).
$author  : null|Organization|Person|array<string|int, mixed>
The author of the document — the party (organization or person) who authored it. Reuses the Schema.org `author` name.
$billingAddress  : null|array<string|int, mixed>|PostalAddress
The address the document is billed to — stored as a frozen copy so the document stays self-contained even if the party's address book changes later. Reuses the Schema.org `billingAddress` name from `Order`.
$billingPeriod  : null|array<string|int, mixed>|Duration|int|float
The time interval used to compute the invoice.
$broker  : null|array<string|int, mixed>|Organization|Person
An entity that arranges for an exchange between a buyer and a seller.
$category  : null|array<string|int, mixed>|string|CategoryCode|Thing
A category for the item. Greater signs or slashes can be used to informally indicate a category hierarchy.
$confirmationNumber  : string|int|null
A number that confirms the given order or payment has been received.
$contact  : null|array<string|int, mixed>|Person
The individual to deal with about the document (the interlocutor on the customer's side) — distinct from the {@see BusinessDocument::$customer} party the document is addressed to. Absent from Schema.org's commercial documents, hence added here.
$created  : null|string
Date of creation of the resource.
$currency  : string|null
The currency the document's amounts are expressed in (ISO 4217, e.g. "EUR").
$customer  : null|array<string|int, mixed>|Organization|Person
The party the document is addressed to.
$description  : string|object|array<string|int, mixed>|null
A short description of the item.
$direction  : null|string|BusinessDocumentDirection
The commercial direction of the document (sale / purchase), from the operator's point of view — which of {@see self::$seller} / {@see self::$customer} is the operator's own organization.
$disambiguatingDescription  : string|null
A sub property of description. A short description of the item used to disambiguate from other, similar items. Information from other properties (in particular, name) may be necessary for the description to be useful for disambiguation.
$documentLines  : null|array<string|int, mixed>|BusinessDocumentLine
The lines of the document.
$hasPart  : string|Thing|array<string|int, Thing>|null
Indicates an item that this part of this item.
$id  : null|int|string
The unique identifier of the item.
$identifier  : string|null
The identifier of the item.
$image  : string|ImageObject|array<string|int, ImageObject|string>|null
The image reference of this resource.
$isPartOf  : string|Thing|array<string|int, Thing>|null
Indicates an item that this item is part of.
$issueDate  : string|int|null
The date the document was issued.
$license  : string|object|null
A legal document giving official permission to do something with the resource.
$mainEntityOfPage  : string|null
Indicates a page (or other CreativeWork) for which this thing is the main entity being described.
$modified  : null|string
Date on which the resource was changed.
$name  : int|string|null
The name of the item.
$orderDelivery  : null|array<string|int, mixed>|ParcelDelivery
The delivery attached to the document: the shipping address (a frozen copy), the delivery method and the requested date. Reuses the name already used by {@see DeliveryNote::$orderDelivery} for internal consistency.
$owner  : null|string|Thing
The owner of this Thing.
$paymentDueDate  : string|int|null
The date that payment is due.
$paymentStatus  : null|string|PaymentStatusType
The status of payment; whether the invoice has been paid or not.
$paymentTerms  : null|string|array<string|int, mixed>|PaymentSchedule
The payment terms — free text, or a structured {@see PaymentSchedule}.
$pointOfSale  : null|array<string|int, mixed>|Place
The point of sale (store, outlet, warehouse) the document is bound to — the outlet that carries it and drives its pricing. A frozen copy, like the other header references.
$potentialAction  : array<string|int, mixed>|Action|null
Indicates a potential Action, which describes an idealized action in which this thing would play an 'object' role.
$provider  : null|array<string|int, mixed>|Organization|Person
The service provider, service operator, or service performer; the goods producer.
$publisher  : string|array<string|int, string|Person|Organization>|Person|Organization|null
The publisher of the resource.
$references  : null|array<string|int, mixed>|string
References to other related documents (e.g. a purchase order number quoted on an invoice).
$referencesOrder  : null|array<string|int, mixed>|PurchaseOrder
The purchase order(s) this invoice bills. One or more purchase orders may be combined into a single invoice.
$sameAs  : string|array<string|int, mixed>|null
URL of a reference Web page that unambiguously indicates the item's identity.
$scheduledPaymentDate  : string|int|null
The date the invoice is scheduled to be paid.
$seller  : null|array<string|int, mixed>|Organization|Person
The party issuing the document.
$status  : null|string|BusinessDocumentStatus
The lifecycle status of the document.
$subjectOf  : null|string|array<string|int, mixed>|CreativeWork|Event
A CreativeWork or Event about this Thing.
$taxes  : null|array<string|int, mixed>|TaxDetail
The document-level taxes (as opposed to a specific line's taxes).
$totals  : null|array<string|int, mixed>|DocumentTotals
The document's monetary summary.
$url  : int|string|null
URL of the item.
$atContext  : string|null
The JSON-LD `@context` value.
$atType  : string|null
The JSON-LD `@type` value.
$DEFAULT_JSON_SERIALIZE_OPTIONS  : array<string|int, mixed>
The default static jsonSerialize options (class-level configuration).
$schemaTypeCache  : array<string, string>
Internal cache for resolved schema types.

Methods

__construct()  : mixed
Constructor to hydrate public properties from an array or stdClass.
getJsonSerializeOptions()  : array<string|int, mixed>
Returns the default JSON serialization options.
getSchemaType()  : string
Returns the fully qualified URI of the schema type.
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

BILLING_PERIOD

public string BILLING_PERIOD = 'billingPeriod'

CONFIRMATION_NUMBER

public string CONFIRMATION_NUMBER = 'confirmationNumber'

CONTEXT

The @context of the json-ld representation of the thing.

public string CONTEXT = \xyz\oihana\schema\constants\Oihana::SCHEMA

JSON_PRIORITY_KEYS

Defines the priority order of keys when serializing the object to JSON-LD.

public array<string|int, mixed> JSON_PRIORITY_KEYS = [\org\schema\constants\Schema::AT_TYPE, \org\schema\constants\Schema::AT_CONTEXT, \org\schema\constants\Schema::_KEY, \org\schema\constants\Schema::_FROM, \org\schema\constants\Schema::_TO, \org\schema\constants\Schema::ID, \org\schema\constants\Schema::NAME, \org\schema\constants\Schema::URL, \org\schema\constants\Schema::CREATED, \org\schema\constants\Schema::MODIFIED]

Keys listed here will always appear first in the serialized array, in the order specified. All remaining public properties will be sorted alphabetically after these priority keys.

This ensures that important JSON-LD metadata and system fields (like @type, @context, _key, id, url, created, modified, etc.) appear at the top of the output for consistency and readability.

Usage:

$orderedKeys = self::JSON_PRIORITY_KEYS;

Notes:

  • Can be overridden in a subclass by redefining the constant.
  • Late static binding (static::JSON_PRIORITY_KEYS) allows child classes to modify the serialization order.

List of JSON-LD keys in priority order.

PAYMENT_DUE_DATE

public string PAYMENT_DUE_DATE = 'paymentDueDate'

PAYMENT_STATUS

public string PAYMENT_STATUS = 'paymentStatus'

REFERENCES_ORDER

public string REFERENCES_ORDER = 'referencesOrder'

SCHEDULED_PAYMENT_DATE

public string SCHEDULED_PAYMENT_DATE = 'scheduledPaymentDate'

Properties

$_from

The metadata to indicates the edge 'from' identifier.

public string|null $_from

$_id

The metadata identifier of the item.

public null|string $_id

$_key

The metadata unique key identifier of the thing.

public null|string $_key

$_rev

The metadata revision value of the thing.

public null|string $_rev

$_to

The metadata to indicates the edge 'to' identifier.

public string|null $_to

$accountId

The identifier for the account the payment will be applied to.

public string|null $accountId

$active

The visibility flag.

public bool|null $active

$additionalType

An additionalType for the item.

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

$adjustments

The document-level adjustments (discounts, surcharges, shipping fees, packaging...) applying to the whole document, as opposed to a specific line's {@see BusinessDocumentLine::$adjustments}.

public null|array<string|int, mixed>|Adjustment $adjustments
Attributes
#[HydrateWith]
\xyz\oihana\schema\business\documents\Adjustment::class

$alternateName

An alias for the item.

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

$attachments

Files attached to the document (e.g. a signed PDF, supporting documents).

public null|array<string|int, mixed>|string|MediaObject $attachments

$author

The author of the document — the party (organization or person) who authored it. Reuses the Schema.org `author` name.

public null|Organization|Person|array<string|int, mixed> $author
Attributes
#[HydrateWith]
\org\schema\Organization::class
\org\schema\Person::class

$billingAddress

The address the document is billed to — stored as a frozen copy so the document stays self-contained even if the party's address book changes later. Reuses the Schema.org `billingAddress` name from `Order`.

public null|array<string|int, mixed>|PostalAddress $billingAddress
Attributes
#[HydrateAs]
\org\schema\PostalAddress::class

$billingPeriod

The time interval used to compute the invoice.

public null|array<string|int, mixed>|Duration|int|float $billingPeriod

$broker

An entity that arranges for an exchange between a buyer and a seller.

public null|array<string|int, mixed>|Organization|Person $broker

In most cases a broker never acquires or releases ownership of a product or service involved in an exchange.

Attributes
#[HydrateWith]
\org\schema\Organization::class
\org\schema\Person::class

$category

A category for the item. Greater signs or slashes can be used to informally indicate a category hierarchy.

public null|array<string|int, mixed>|string|CategoryCode|Thing $category

$confirmationNumber

A number that confirms the given order or payment has been received.

public string|int|null $confirmationNumber

$contact

The individual to deal with about the document (the interlocutor on the customer's side) — distinct from the {@see BusinessDocument::$customer} party the document is addressed to. Absent from Schema.org's commercial documents, hence added here.

public null|array<string|int, mixed>|Person $contact
Attributes
#[HydrateAs]
\org\schema\Person::class

$created

Date of creation of the resource.

public null|string $created

$currency

The currency the document's amounts are expressed in (ISO 4217, e.g. "EUR").

public string|null $currency

$customer

The party the document is addressed to.

public null|array<string|int, mixed>|Organization|Person $customer
Attributes
#[HydrateWith]
\org\schema\Organization::class
\org\schema\Person::class

$description

A short description of the item.

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

$direction

The commercial direction of the document (sale / purchase), from the operator's point of view — which of {@see self::$seller} / {@see self::$customer} is the operator's own organization.

public null|string|BusinessDocumentDirection $direction

$disambiguatingDescription

A sub property of description. A short description of the item used to disambiguate from other, similar items. Information from other properties (in particular, name) may be necessary for the description to be useful for disambiguation.

public string|null $disambiguatingDescription

$documentLines

The lines of the document.

public null|array<string|int, mixed>|BusinessDocumentLine $documentLines
Attributes
#[HydrateWith]
\xyz\oihana\schema\business\documents\BusinessDocumentLine::class

$hasPart

Indicates an item that this part of this item.

public string|Thing|array<string|int, Thing>|null $hasPart

$id

The unique identifier of the item.

public null|int|string $id

$identifier

The identifier of the item.

public string|null $identifier

$isPartOf

Indicates an item that this item is part of.

public string|Thing|array<string|int, Thing>|null $isPartOf

$issueDate

The date the document was issued.

public string|int|null $issueDate

$license

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

public string|object|null $license

$mainEntityOfPage

Indicates a page (or other CreativeWork) for which this thing is the main entity being described.

public string|null $mainEntityOfPage

$modified

Date on which the resource was changed.

public null|string $modified

$name

The name of the item.

public int|string|null $name

$orderDelivery

The delivery attached to the document: the shipping address (a frozen copy), the delivery method and the requested date. Reuses the name already used by {@see DeliveryNote::$orderDelivery} for internal consistency.

public null|array<string|int, mixed>|ParcelDelivery $orderDelivery
Attributes
#[HydrateAs]
\org\schema\ParcelDelivery::class

$owner

The owner of this Thing.

public null|string|Thing $owner

Represents any entity (person, organization, system, or other object) that can be considered the possessor of this Thing.

$paymentDueDate

The date that payment is due.

public string|int|null $paymentDueDate

$paymentStatus

The status of payment; whether the invoice has been paid or not.

public null|string|PaymentStatusType $paymentStatus

$paymentTerms

The payment terms — free text, or a structured {@see PaymentSchedule}.

public null|string|array<string|int, mixed>|PaymentSchedule $paymentTerms
Attributes
#[HydrateAs]
\xyz\oihana\schema\business\documents\PaymentSchedule::class

$pointOfSale

The point of sale (store, outlet, warehouse) the document is bound to — the outlet that carries it and drives its pricing. A frozen copy, like the other header references.

public null|array<string|int, mixed>|Place $pointOfSale
Attributes
#[HydrateAs]
\org\schema\Place::class

$potentialAction

Indicates a potential Action, which describes an idealized action in which this thing would play an 'object' role.

public array<string|int, mixed>|Action|null $potentialAction

$provider

The service provider, service operator, or service performer; the goods producer.

public null|array<string|int, mixed>|Organization|Person $provider

Another party (a seller) may offer those services or goods on behalf of the provider, who may also serve as the seller.

Attributes
#[HydrateWith]
\org\schema\Organization::class
\org\schema\Person::class

$references

References to other related documents (e.g. a purchase order number quoted on an invoice).

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

$referencesOrder

The purchase order(s) this invoice bills. One or more purchase orders may be combined into a single invoice.

public null|array<string|int, mixed>|PurchaseOrder $referencesOrder
Attributes
#[HydrateWith]
\xyz\oihana\schema\business\documents\PurchaseOrder::class

$sameAs

URL of a reference Web page that unambiguously indicates the item's identity.

public string|array<string|int, mixed>|null $sameAs

E.g. the URL of the item's Wikipedia page, Wikidata entry, or official website.

$scheduledPaymentDate

The date the invoice is scheduled to be paid.

public string|int|null $scheduledPaymentDate

$seller

The party issuing the document.

public null|array<string|int, mixed>|Organization|Person $seller
Attributes
#[HydrateWith]
\org\schema\Organization::class
\org\schema\Person::class

$subjectOf

A CreativeWork or Event about this Thing.

public null|string|array<string|int, mixed>|CreativeWork|Event $subjectOf

$taxes

The document-level taxes (as opposed to a specific line's taxes).

public null|array<string|int, mixed>|TaxDetail $taxes
Attributes
#[HydrateWith]
\xyz\oihana\schema\business\documents\TaxDetail::class

$totals

The document's monetary summary.

public null|array<string|int, mixed>|DocumentTotals $totals
Attributes
#[HydrateAs]
\xyz\oihana\schema\business\documents\DocumentTotals::class

$url

URL of the item.

public int|string|null $url

$atContext

The JSON-LD `@context` value.

protected string|null $atContext = null

Default is https://schema.org.

$atType

The JSON-LD `@type` value.

protected string|null $atType = null

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

$DEFAULT_JSON_SERIALIZE_OPTIONS

The default static jsonSerialize options (class-level configuration).

protected static array<string|int, mixed> $DEFAULT_JSON_SERIALIZE_OPTIONS = []

$schemaTypeCache

Internal cache for resolved schema types.

private static array<string, string> $schemaTypeCache = []

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

getJsonSerializeOptions()

Returns the default JSON serialization options.

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

This method determines how the jsonSerialize() output is reduced or compressed, etc. It can be overridden in child classes to customize serialization behavior.

Return values
array<string|int, mixed>

Returns the reduction/compression options for JSON serialization.

getSchemaType()

Returns the fully qualified URI of the schema type.

public static getSchemaType() : string

This method combines the class's CONTEXT constant with its short name to produce a globally unique identifier for the entity type.

  • It uses Late Static Binding to ensure the correct context is retrieved even when called from an inherited class (e.g., Corporation vs. Affiliate).
  • Performance Optimization: Results are stored in a static cache ($schemaTypeCache) to avoid redundant Reflection calls during the same execution lifecycle.
Return values
string

The absolute URI of the type (e.g., "https://schema.org/Thing"). ** @example

echo Thing::getSchemaType();      // https://schema.org/Thing
echo Affiliate::getSchemaType();  // https://schema.oihana.xyz/Pagination

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

Optional JSON-LD context.

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

Optional JSON-LD type

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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