ABANDONED! This package is discontinued and will not be updated.

Billing

Data types for creating and formatting invoices.

Installation

composer require byrokrat/billing

Usage

Invoices are created using the InvoiceBuilder:

namespace byrokrat\billing;

use byrokrat\amount\Currency\EUR;

// 1 unit of a 100 EUR item with 25% VAT
$item = new Item('Description', new EUR('100'), 1, .25);

$invoice = (new InvoiceBuilder)
    ->setSerial('1')
    ->setSeller(new Agent('Company X'))
    ->setBuyer(new Agent('Mrs Y'))
    ->generateOcr()
    ->addItem($item)
    ->setAttribute('message', 'custom invoice message')
    ->buildInvoice();

// prints 125 (100 EUR plus 25% VAT)
echo $invoice->getInvoiceTotal();

Implementing your own billables and agents

Billing uses an interface centered design:

• Billable represents a purchasable item.
• AgentInterface represents a selling or buying party.

Item and Agent offers simple implementations of these interfaces, but you may of course provide your own implementations and extend the interfaces as needed.

API

InvoiceBuilder

Method signature	description
setSerial(string $serial): self	Set invoice serial number
setSeller(AgentInterface $seller): self	Set seller
setBuyer(AgentInterface $buyer): self	Set buyer
setOcr(string $ocr): self	Set invoice reference number
generateOcr(): self	Generate invoice reference number from serial number
addItem(Billable $billable): self	Add billable to invoice
setBillDate(DateTimeInterface $date): self	Set date of invoice creation
setExpiresAfter(int $nrOfDays): self	Set number of days before invoice expires
setDeduction(Amount $deduction): self	Set deduction (amount prepaid)
setAttribute(string $key, $value): self	Set attribute defined by key
buildInvoice(): Invoice	Build invoice

Invoice

Method signature	description
getSerial(): string	Get invoice serial number
getSeller(): AgentInterface	Get registered seller
getBuyer(): AgentInterface	Get registered buyer
getOcr(): string	Get invoice reference number
getItems(): ItemBasket	Get item basket
getInvoiceTotal(): Amount	Get charged amount (VAT included)
getBillDate(): DateTimeInterface	Get date of invoice creation
getExpiresAfter(): int	Get number of days before invoice expires
getExpirationDate(): DateTimeInterface	Get date when invoice expires
getDeduction(): Amount	Get deducted prepaid amound
getAttribute(string $key, $default = ''): mixed	Get attribute or default if attribute is not set
getAttributes(): array	Get all loaded attributes

ItemBasket

Method signature	description
getIterator(): Traversable	Iterate over ItemEnvelope objects
getNrOfItems(): int	Get number of items in basket
getNrOfUnits(): int	Get number of units in basket (each item may contain multiple units)
getTotalUnitCost(): Amount	Get total cost of all items (VAT excluded)
getTotalVatCost(): Amount	Get total VAT cost for all items
getTotalCost(): Amount	Get total cost of all items (VAT included)
getVatRates(): array	Get unit and vat totals for non-zero vat rates