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<?php
declare(strict_types = 1);
namespace Kauri\Loan;
class InterestAmountCalculator implements InterestAmountCalculatorInterface
{
/**
* Calculate interest amount for present value based on interest rate
* @param float $presentValue
* @param float $interestRate
* @return float
*/
public function getInterestAmount(float $presentValue, float $interestRate): float
$interestAmount = ($presentValue * ($interestRate / 100));
return $interestAmount;
}
* @param float $interestRate Yearly interest rate (based on 360 days)
* @param float $periodLength Period length in days
public function getPeriodInterestRate(float $interestRate, float $periodLength): float
$periodRate = $interestRate / 360 * $periodLength;
return (float) $periodRate;
kaurikk /
loan-amount-calculator
