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lukeraymonddowning
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Description

A Laravel package that makes working with money in a secure manner a cinch!

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Mula

Latest Version on Packagist Mula PhpUnit Tests Quality Score

Mula is a Laravel package that makes it super easy to work with money in your applications. It uses Money for PHP under the hood, but takes away all the complexity and provides all the pieces you need to be up and running with money in a matter of minutes.

Mula is also fully immutable, so you won't run in to issues changing values you really wish you hadn't. It also handles rounding and allocation, so you don't have to worry about any finances going missing.

TOC

Installation

You can install the package via composer:

composer require lukeraymonddowning/mula

You should publish the

mula.php
config file by running:
php artisan vendor:publish --provider="Lukeraymonddowning\Mula\MulaServiceProvider"

Basic usage and API

We provide a

Mula
facade that allows you to easily create, parse and alter monetary values.

Create

To manually create a new instance, use the

create
method.
Mula::create('12000', 'USD'); // $120.00

Note that when creating, we exclude any decimal point. Currency should be passed as an ISO 4217 code.

You may also exclude the currency, in which case

Mula
will use the default currency defined in the
mula.php
config file, or your
.env
file using the
MULA_CURRENCY
key.

Whilst we will use strings to pass values to the

create
method in the documentation, you are free to pass integer values instead.

Parse

More often than not, you'll want to parse existing monetary values rather than create new ones from scratch. You should use the

parse
method when handling user input or reading monetary values from a 3rd party API.

If you are using the

phpmoney
driver (which is the default), you have a few different drivers you can use for parsing money. You can set your desired driver in the
mula.php
config file, by altering the value of
mula.options.phpmoney.parser.default
.

We recommend using the default

aggregate
parser, but for the sake of clarity, we'll explain the difference between each one.

Whilst we will use strings to pass values to the

parse
method in the documentation, you are free to pass integers or decimal values instead.

Aggregate

The

aggregate
parser (which is the default) is the most flexible driver available, and will attempt to parse monetary strings formatted in international or decimal. Here are a few examples:
Mula::parse('$120.99'); // $120.99

Mula::parse('120.99', 'USD'); // $120.99

Mula::parse('£120.99', 'USD'); // $120.99

Mula::parse('120', 'USD'); // $120.00

Note that in the third example, the money object is in USD, even though we parsed a value in GBP. That is because we passed a second parameter of

USD
. Passing in a currency will always override the given currency.

International

The

international
parser will parse full monetary string with currency, but will not parse decimal strings.
Mula::parse('$120.99'); // $120.99

Mula::parse('120.99'); // Exception

Decimal

The

decimal
parser will parse decimal values with the given currency (or the default currency), but will not parse monetary strings.
Mula::parse('120.99', 'USD'); // $120.99

Mula::parse('$120.99'); // Exception

Display

To display money in the UI, you can use the

display
method. It accepts a single parameter,
includeCurrency
, which will either include or omit the currency symbol from the result.
Mula::create('12099', 'USD')->display(); // $120.99

Mula::create('12099', 'USD')->display(false); // 120.99

Mula
also implements the
Stringable
interface, so you can output money directly in a blade view.
@php($money = Mula::create('12099', 'USD'))
{{ $money }}

{-- This will show as '$120.99' --}

Display without currency

As a syntactical nicety, you may use the

displayWithoutCurrency
method, which is just an alias for
display(false)
.

Currency

The

currency
method will return the ISO 4217 code of the money object.
Mula::create('12099', 'USD')->currency(); // USD

Mula::create('12099', 'GBP')->currency(); // GBP

Value

The

value
method will return the nonformatted value of the money object. You will rarely need to use this method, but
Mula
makes use of it for casting values to the database.
Mula::create('12099', 'USD')->value(); // 12099

Add

The

add
method adds the provided money objects to the current money object and returns a new money object. You may pass any number of money objects as varadic parameters.
Mula::create('1500', 'USD')->add(Mula::create('1500', 'USD'))->display(); // $30.00

Mula::create('1500', 'USD')->add(Mula::create('1500', 'USD'), Mula::create('3000', 'USD'))->display(); // $60.00

Subtract

The

subtract
method subtracts the provided money objects from the current money object and returns a new money object. You may pass any number of money objects as varadic parameters.
Mula::create('3000', 'USD')->subtract(Mula::create('1500', 'USD'))->display(); // $15.00

Mula::create('6000', 'USD')->subtract(Mula::create('1500', 'USD'), Mula::create('3000', 'USD'))->display(); // $15.00

Multiply by

The

multiplyBy
method multiplies the money object by the given multiplier and returns a new money object.
Mula::create('5000', 'USD')->multiplyBy(2)->display(); // $100.00

Divide by

The

divideBy
method divides the money object by the given divisor and returns a new money object.
Mula::create('5000', 'USD')->divideBy(2)->display(); // $25.00

Modulus

The

mod
method returns the remainder of money after being divided into another sum of money.
Mula::create('1000', 'USD')->mod(Mula::create('300', 'USD'))->display(); // $1.00

Has same currency as

To check if a money object has the same currency as other money objects, use the

hasSameCurrencyAs
method. It accepts a variable number of money objects as arguments. If any of the arguments have a different currency, the method will return
false
, otherwise it will return
true
.
Mula::create('1000', 'USD')->hasSameCurrencyAs(Mula::create('500', 'USD')); // TRUE

Mula::create('1000', 'USD')->hasSameCurrencyAs(Mula::create('500', 'GBP')); // FALSE

Mula::create('1000', 'USD')->hasSameCurrencyAs(Mula::create('500', 'USD'), Mula::create('3000', 'USD')); // TRUE

Mula::create('1000', 'USD')->hasSameCurrencyAs(Mula::create('500', 'USD'), Mula::create('3000', 'GBP')); // FALSE

Equals

To check if a money object is equal to other money objects, use the

equals
method. It accepts a variable number of money objects as arguments. If any of the arguments have a different amount, the method will return
false
, otherwise it will return
true
.
Mula::create('1000', 'USD')->equals(Mula::create('1000', 'USD')); // TRUE

Mula::create('1000', 'USD')->equals(Mula::create('500', 'USD')); // FALSE

Mula::create('1000', 'USD')->equals(Mula::create('1000', 'USD'), Mula::create('1000', 'USD')); // TRUE

Mula::create('1000', 'USD')->equals(Mula::create('1000', 'USD'), Mula::create('500', 'USD')); // FALSE

Is greater than

The

isGreaterThan
method checks if a money object is greater than all other money objects. It returns
true
if it is, or
false
if any of the money object provided are greater than or equal to it.
Mula::create('1000', 'USD')->isGreaterThan(Mula::create('999', 'USD')); // TRUE

Mula::create('1000', 'USD')->isGreaterThan(Mula::create('1000', 'USD')); // FALSE

Mula::create('1000', 'USD')->isGreaterThan(Mula::create('1500', 'USD')); // FALSE

Mula::create('1000', 'USD')->isGreaterThan(Mula::create('999', 'USD'), Mula::create('800', 'USD')); // TRUE

Mula::create('1000', 'USD')->isGreaterThan(Mula::create('1000', 'USD'), Mula::create('500', 'USD')); // FALSE

Is greater than or equal to

The

isGreaterThanOrEqualTo
method checks if a money object is greater than or equal to all other money objects. It returns
true
if it is, or
false
if any of the money object provided are greater than it.
Mula::create('1000', 'USD')->isGreaterThanOrEqualTo(Mula::create('999', 'USD')); // TRUE

Mula::create('1000', 'USD')->isGreaterThanOrEqualTo(Mula::create('1000', 'USD')); // TRUE

Mula::create('1000', 'USD')->isGreaterThanOrEqualTo(Mula::create('1500', 'USD')); // FALSE

Mula::create('1000', 'USD')->isGreaterThanOrEqualTo(Mula::create('999', 'USD'), Mula::create('800', 'USD')); // TRUE

Mula::create('1000', 'USD')->isGreaterThanOrEqualTo(Mula::create('1000', 'USD'), Mula::create('500', 'USD')); // TRUE

Mula::create('1000', 'USD')->isGreaterThanOrEqualTo(Mula::create('1000', 'USD'), Mula::create('1500', 'USD')); // FALSE

Is less than

The

isLessThan
method checks if a money object is less than all other money objects. It returns
true
if it is, or
false
if any of the money object provided are less than or equal to it.
Mula::create('1000', 'USD')->isLessThan(Mula::create('999', 'USD')); // FALSE

Mula::create('1000', 'USD')->isLessThan(Mula::create('1000', 'USD')); // TRUE

Mula::create('1000', 'USD')->isLessThan(Mula::create('1500', 'USD')); // TRUE

Mula::create('1000', 'USD')->isLessThan(Mula::create('1500', 'USD'), Mula::create('800', 'USD')); // FALSE

Mula::create('1000', 'USD')->isLessThan(Mula::create('1200', 'USD'), Mula::create('1500', 'USD')); // TRUE

Is less than or equal to

The

isLessThanOrEqualTo
method checks if a money object is less than or equal to all other money objects. It returns
true
if it is, or
false
if any of the money object provided are less than it.
Mula::create('1000', 'USD')->isLessThanOrEqualTo(Mula::create('999', 'USD')); // FALSE

Mula::create('1000', 'USD')->isLessThanOrEqualTo(Mula::create('1000', 'USD')); // TRUE

Mula::create('1000', 'USD')->isLessThanOrEqualTo(Mula::create('1500', 'USD')); // TRUE

Mula::create('1000', 'USD')->isLessThanOrEqualTo(Mula::create('999', 'USD'), Mula::create('800', 'USD')); // FALSE

Mula::create('1000', 'USD')->isLessThanOrEqualTo(Mula::create('1000', 'USD'), Mula::create('500', 'USD')); // FALSE

Mula::create('1000', 'USD')->isLessThanOrEqualTo(Mula::create('1000', 'USD'), Mula::create('1500', 'USD')); // TRUE

Split

Split is rather special. It allocates money based on the provided allocation. It can accept an

integer
,
array
or
Collection
and returns a
Collection
of
Money
.

If you want to split a money object as evenly as possible between a given number, pass an

integer
.
Mula::create('10000', 'USD')->split(3); // A Collection. The first item will have a value of $33.34 the second and third items will have a value of $33.33. 

If you want to allocate money based on percentages, you may pass an

array
or
Collection
of numeric values. The values must add up to 100.
Mula::create('10000', 'USD')->split([30, 70]); // A Collection. The first item will have a value of $30.00 and the second item will have a value of $70.00.

Mula::create('10000', 'USD')->split(collect([30, 70])); // A Collection. The first item will have a value of $30.00 and the second item will have a value of $70.00.

Storing money in a database

Mula
makes it easy to store and retrieve money values from a database by providing a custom cast you can attach to your Eloquent models.
use Illuminate\Database\Eloquent\Model;
use Lukeraymonddowning\Mula\Casts\Mula;

class Product extends Model {

protected $casts = [
    'price' => Mula::class
];

}

The column storing your monetary values in your database should be a string type. This prevents floating point errors and also allows

Mula
to store the currency along with the value.

If you'd prefer to store your amount and currency in two separate columns, which allows you more freedom when performing database queries, you can! Just let

Mula
know the amount column and currency column respectively in your
$casts
array.
use Illuminate\Database\Eloquent\Model;
use Lukeraymonddowning\Mula\Casts\Mula;

class Product extends Model {

protected $casts = [
    'price' => Mula::class.':amount,currency'
];

}

Collection methods

Mula
adds macros to Laravel Collections to make it easy to perform common monetary operations to a Collection of money objects.

Financial sum

If you need to add together a

Collection
of money objects, you may use the
financialSum
method. It will return a new money object.
collect(Mula::create('1500', 'USD'), Mula::create('3000', 'USD'))->financialSum(); // A new money object with a value of $45.00.

Testing

Mula
uses PhpUnit for unit tests. You can run the test suite from the terminal:
composer test

Changelog

Please see CHANGELOG for more information what has changed recently.

Contributing

Please see CONTRIBUTING for details.

Security

If you discover any security related issues, please email [email protected] instead of using the issue tracker.

Credits

License

The MIT License (MIT). Please see License File for more information.

Laravel Package Boilerplate

This package was generated using the Laravel Package Boilerplate.

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