game/_incl_data/class/Model/EkrExchangeRates.php

<?php

namespace Model;

use Core\Config;
use Core\Db;

class EkrExchangeRates
{
    /**
     * @var array|false
     */
    private $today;

    public function __construct()
    {
        $this->today = Db::getRow('select RUB, USD, from_unixtime(id, ?) as date from ekr_exchange_rates order by id desc limit 1', ['%d.%m.%Y']);
    }

    public function oneEkrInUSD(): float
    {
        if (!$this->today) {
            return 0.00;
        }
        return round($this->today['RUB'] / $this->today['USD'], 2);
    }

    public function oneEkrInRUB(): float
    {
        if (!$this->today) {
            return floatval(Config::EKR_RUB_PRICE);
        }
        return $this->today['RUB'];
    }

    public function date(): string
    {
        if (!$this->today) {
            return date('d.m.Y');
        }
        return $this->today['date'];
    }
}