<?php
namespace App\Services;
use SimpleXMLElement;
class TcmbService
{

    static function exchange($currency = null)
    {
        $rate = @new SimpleXMLElement('https://www.tcmb.gov.tr/kurlar/today.xml', 0, true);
        if (!empty($currency)) {
            foreach ($rate as $key => $value) {
                if ((string)$value['Kod'] == $currency) {
                    $rate = $value;
                }
            }
        }
        return $rate;
    }
}