Dilmas Currency

Dilmas.php

<?php

class Dilmas extends \SplFloat
{
    public function __construct($value)
    {
        $currency = json_decode(file_get_contents('http://api.fixer.io/latest?base=USD&symbols=BRL'), true);
        $brl      =(float) $currency['rates']['BRL'];

        parent::__construct(((float) round($value / $brl, 2)));
    }
}

index.php

<?php
require_once 'Dilmas.php';

$value1 = new Dilmas(10);
$value2 = new \SplFloat(2);

echo bcadd($value1, $value2, 2); // return depends on currency