hhamon/money

Value Object that represents a monetary value (using a currency's smallest unit).

Money

Value Object that represents a monetary value using a currency's smallest unit.

Installation

Simply add a dependency on sebastian/money to your project's composer.json file if you use Composer to manage the dependencies of your project.

Here is a minimal example of a composer.json file that just defines a dependency on Money 1.0:

{
    "require": {
        "sebastian/money": "1.0.*"
    }
}

Usage Examples

Creating a Money object and accessing its monetary value

use SebastianBergmann\Money\Currency;
use SebastianBergmann\Money\Money;

// Create Money object that represents 1 EUR
$m = new Money(100, new Currency('EUR'));

// Access the Money object's monetary value
print $m->getAmount();

The code above produces the output shown below:

100

Formatting a Money object using PHP's built-in NumberFormatter

use SebastianBergmann\Money\Currency;
use SebastianBergmann\Money\Money;
use SebastianBergmann\Money\IntlFormatter;

// Create Money object that represents 1 EUR
$m = new Money(100, new Currency('EUR'));

// Format a Money object using PHP's built-in NumberFormatter (German locale)
$f = new IntlFormatter('de_DE');

print $f->format($m);

The code above produces the output shown below:

1,00 €

Using a derived class as a shortcut for a specific currency

use SebastianBergmann\Money\Currency;
use SebastianBergmann\Money\Money;

class EUR extends Money
{
    public function __construct($amount)
    {
        parent::__construct($amount, new Currency('EUR'));
    }
}

Basic arithmetic using Money objects

use SebastianBergmann\Money\Currency;
use SebastianBergmann\Money\Money;

// Create two Money objects that represent 1 EUR and 2 EUR, respectively
$a = new Money(100, new Currency('EUR'));
$b = new Money(200, new Currency('EUR'));

// Negate a Money object
$c = $a->negate();
print $c->getAmount();

// Calculate the sum of two Money objects
$c = $a->add($b);
print $c->getAmount();

// Calculate the difference of two Money objects
$c = $b->subtract($a);
print $c->getAmount();

// Multiply a Money object with a factor
$c = $a->multiply(2);
print $c->getAmount();

The code above produces the output shown below:

-100
300
100
200

Comparing Money objects

use SebastianBergmann\Money\Currency;
use SebastianBergmann\Money\Money;

// Create two Money objects that represent 1 EUR and 2 EUR, respectively
$a = new Money(100, new Currency('EUR'));
$b = new Money(200, new Currency('EUR'));

var_dump($a->lessThan($b));
var_dump($a->greaterThan($b));

var_dump($b->lessThan($a));
var_dump($b->greaterThan($a));

var_dump($a->compareTo($b));
var_dump($a->compareTo($a));
var_dump($b->compareTo($a));

The code above produces the output shown below:

bool(true)
bool(false)
bool(false)
bool(true)
int(-1)
int(0)
int(1)

The compareTo() method returns an integer less than, equal to, or greater than zero if the value of one Money object is considered to be respectively less than, equal to, or greater than that of another Money object.

You can use the compareTo() method to sort an array of Money objects using PHP's built-in sorting functions:

use SebastianBergmann\Money\Currency;
use SebastianBergmann\Money\Money;

$m = array(
    new Money(300, new Currency('EUR')),
    new Money(100, new Currency('EUR')),
    new Money(200, new Currency('EUR'))
);

usort(
    $m,
    function ($a, $b) { return $a->compareTo($b); }
);

foreach ($m as $_m) {
    print $_m->getAmount() . "\n";
}

The code above produces the output shown below:

100
200
300

Allocate the monetary value represented by a Money object among N targets

use SebastianBergmann\Money\Currency;
use SebastianBergmann\Money\Money;

// Create a Money object that represents 0,99 EUR
$a = new Money(99, new Currency('EUR'));

foreach ($a->allocateToTargets(10) as $t) {
    print $t->getAmount() . "\n";
}

The code above produces the output shown below:

10
10
10
10
10
10
10
10
10
9

Allocate the monetary value represented by a Money object using a list of ratios

use SebastianBergmann\Money\Currency;
use SebastianBergmann\Money\Money;

// Create a Money object that represents 0,05 EUR
$a = new Money(5, new Currency('EUR'));

foreach ($a->allocateByRatios(array(3, 7)) as $t) {
    print $t->getAmount() . "\n";
}

The code above produces the output shown below:

2
3