jimmerioles/bitcoin-currency-converter-php

<?php

use Jimmerioles\BitcoinCurrencyConverter\Converter;

if (! function_exists('to_currency')) {
    /**
     * Convert Bitcoin amount to a specific currency.
     *
     * @param  string                  $currencyCode
     * @param  float                   $btcAmount
     * @param  ProviderInterface|null  $provider
     * @return float
     */
    function to_currency($currencyCode, $btcAmount, $provider = null)
    {
        return (new Converter($provider))->toCurrency($currencyCode, $btcAmount);
    }
}

if (! function_exists('to_btc')) {
    /**
     * Convert currency amount to Bitcoin.
     *
     * @param  float  $amount
     * @param  string $currency
     * @return float
     */
    function to_btc($amount, $currencyCode, $provider = null)
    {
        return (new Converter($provider))->toBtc($amount, $currencyCode);
    }
}