<?php
class Money
{
private $amout;
private $currency;
public function __construct($amount, $currency)
{
$this->amount = $amount;
$this->currency = $currency;
}
public function getAmount()
{
return $this->amount;
}
public function incrementByPercentage($pct)
{
return new Money($this->amount * (1 + $pct), $this->currency);
}
}
$price = new Money(100, 'EUR');
$newPrice = $price->incrementByPercentage(0.1);
echo $newPrice->getAmount();