README

A lightweight PHP package providing flexible and locale-aware money string formatters.
It includes three formatter classes for different use cases — from simple decimal formatting to fully localized currency output. Uses interfaces from compono-kit/money-interfaces.

Requirements

• PHP >= 8.3
• compono-kit/money-interfaces

📦 Installation

composer require compono-kit/money-formatters

🚀 Overview

This package defines three money formatters that implement the same interface FormatsMoneyString.

Interfaces & Traits

Each formatter implements:

interface FormatsMoneyString
{
    public function formatString(RepresentsMoney $money): string;
}

Classes

SimpleMoneyFormatter

Formats a RepresentsMoney instance as a plain decimal string without localization.
Useful for APIs or technical output where consistency matters more than human readability.

$formatter = new SimpleMoneyFormatter(CurrencyOutput::RIGHT_SYMBOL);

echo $formatter->formatString($money);
// Example: 1234.56 €

Features

• No locale dependency.
• No thousand separators.
• Optional control for currency presentation using enum CurrencyOutput:
  • LEFT_SYMBOL => Example: € 1234.56
  • RIGHT_SYMBOL => Example: 1234.56 €
  • LEFT_ISO_CODE => Example: EUR 1234.56
  • RIGHT_ISO_CODE => Example: 1234.56 EUR
  • NONE => Example: 1234.56

LocalizedDecimalMoneyFormatter

Formats a money value using PHP’s \NumberFormatter with the DECIMAL style.
This provides localized decimal separators, but keeps currency presentation customizable.

$formatter = new LocalizedDecimalMoneyFormatter('de_DE', CurrencyOutput::LEFT_SYMBOL);

echo $formatter->formatString($money);
// Example (German locale, left symbol): € 1.234,56

Features

• Locale-dependent decimal separators.
• Ideal when you want localized numbers but still want control over currency display.
• Optional control for currency presentation using enum CurrencyOutput:
  • LEFT_SYMBOL => Example: € 1.234,56
  • RIGHT_SYMBOL => Example: 1.234,56 €
  • LEFT_ISO_CODE => Example: EUR 1.234,56
  • RIGHT_ISO_CODE => Example: 1.234,56 EUR
  • NONE => Example: 1.234,56

LocalizedMoneyFormatter

Uses PHP’s \NumberFormatter::CURRENCY to produce fully localized money strings.
This is the most “natural” presentation for end users.

$formatter = new LocalizedMoneyFormatter('en_US');

echo $formatter->formatString($money);
// Example: $1,234.56

Features

• Fully localized formatting.
• Locale determines symbol, placement, and spacing automatically.
• Best suited for UI display and end-user presentation.

⚙️ CurrencyOutput Options

CurrencyOutput defines how the currency symbol is positioned:

CurrencyOutput::LEFT_SYMBOL // e.g. € 1.234,56
CurrencyOutput::RIGHT_SYMBOL // e.g. 1.234,56 €
CurrencyOutput::LEFT_ISO_CODE  // e.g. EUR 1.234,56
CurrencyOutput::RIGHT_ISO_CODE   // e.g.  1.234,56 EUR
CurrencyOutput::NONE   // e.g. 1.234,56

🢙 Summary

This package is designed to be small, predictable, and composable —
you decide how much localization you want, while keeping all formatters interchangeable via the same interface