FinancialUtils

FinancialUtils - some financial calculators i.e. APR (Annual Percentage Rate), IRR (Internal Rate of Return)

Computation example

    $aprCalculator = new \Financial\Calculator\APR(new \Financial\Math\NewtonRaphsonMethod());

    $credit = new \Financial\Model\CreditDefinitionEqualInstallments(new \Financial\Util\Calendar());

    $credit->setDelay(0);
    $credit->setInstallmentValue(40.0);
    $credit->setInstallmentsFrequency(\Financial\Util\Calendar::FREQUENCY_MONTH);
    $credit->setInstallmentsCount(12);
    $credit->setBorrowedAmount(400.0);
    $credit->setOtherCosts(14.0);
    //expected output: apr = 51.52 %
    echo 'apr = ' . round($aprCalculator->calculate($credit), 2).' %'.PHP_EOL;

Online demo (PL)

Try it: http://webapi-solutions.pl:8080/rrso/

Installation & testing

1. git clone https://github.com/ziollek/FinancialUtils.git && cd FinancialUtils
2. Install composer: php -r "eval('?>'.file_get_contents('https://getcomposer.org/installer'));"
3. Install dependencies: ./composer.phar install
4. bin/phpunit

Using via composer (sample for new project)

1. create composer.json

    {
        "require": {
            "publib/FinancialUtils": "dev-master"
        },
        "autoload": {
            "psr-0": {"": "src/"}
        },
        "repositories": [
            {
                "type": "git",
                "url": "https://github.com/ziollek/FinancialUtils.git"
            }
        ],
        "minimum-stability" : "dev"
    }
   

2. Install composer: php -r "eval('?>'.file_get_contents('https://getcomposer.org/installer'));"

3. Install dependencies: ./composer.phar install

4. Lib will be installed to vendor/publib/FinancialUtils/, your sources should be inside src/ and you should use PSR-0 naming class convention