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:

{
    "require": {
        "sebastian/money": "1.5.*"
    }
}

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();

// Access the Money object's monetary value converted to its base units
print $m->getConvertedAmount();

The code above produces the output shown below:

100

1.00

Creating a Money object from a string value

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

// Create Money object that represents 12.34 EUR
$m = Money::fromString('12.34', new Currency('EUR'))

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

The code above produces the output shown below:

1234

Using a Currency-specific subclass of Money

use SebastianBergmann\Money\EUR;

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

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

The code above produces the output shown below:

100

Please note that there is no subclass of Money that is specific to Turkish Lira as TRY is not a valid class name in PHP.

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

Extract a percentage (and a subtotal) from the monetary value represented by a Money object

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

// Create a Money object that represents 100,00 EUR
$original = new Money(10000, new Currency('EUR'));

// Extract 21% (and the corresponding subtotal)
$extract = $original->extractPercentage(21);

printf(
    "%d = %d + %d\n",
    $original->getAmount(),
    $extract['subtotal']->getAmount(),
    $extract['percentage']->getAmount()
);

The code above produces the output shown below:

10000 = 8265 + 1735

Please note that this extracts the percentage out of a monetary value where the percentage is already included. If you want to get the percentage of the monetary value you should use multiplication (multiply(0.21), for instance, to calculate 21% of a monetary value represented by a Money object) instead.