/**
* Convert a currency value to another currency
* @param Float $amount
* @param String $currency_from Please use constant CURRENCY_CODE_*
* @param String $currency_to Please use constant CURRENCY_CODE_*
* @return Float
*/
function convertCurrency($amount, $currency_from, $currency_to)
{
$exchange_rate = load_config('exchange-rate');
$key = generateExchangeRateKey($currency_from, $currency_to);
return $amount * $exchange_rate[$key];
}
<?php
global $db;
require_once '../confy.php';
require_once '../functions.php';
require_once '../functions-2.php';
tep_db_connect();
use_class('logger');
$logger = new logger('cron', 'daily-exchange-rate');
$api_status_ok = true;
$exchange_rate = array();
$exchange_rate['date'] = date('d.m.Y H:i:s');
$currencies = getAllCurrencies();
foreach ($currencies as $c_from) {
foreach ($currencies as $c_to) {
$key = generateExchangeRateKey($c_from, $c_to);
if ($c_from == $c_to) {
$rate = 1;
} else {
$rate = getExchangeRateOnline($c_from, $c_to);
if ($rate == 0 || $rate === false) {
$api_status_ok = false;
}
}
$exchange_rate[$key] = $rate;
$logger->write('Rate for ' . $key . ': ' . $rate);
}
}
if ($api_status_ok) {
save_config('exchange-rate', $exchange_rate);
$logger->write('Save rate to configuration file');
