Exchange is PHP script works with currencies. You can convert price.
Here is changelog.
$ composer require h4kuna/exchangeOptional packages
$ composer require malkusch/lock guzzlehttp/guzzle guzzlehttp/psr7 h4kuna/dir nette/cachingSupport PSR-6 for cache.
Init object Exchange by ExchangeFactory. Default Driver for read is Cnb, here are others.
For example define own exchange rates:
- 25 CZK = 1 EUR
- 20 CZK = 1 USD
use h4kuna\Exchange\Currency\Property;
use h4kuna\Exchange\Driver\Cnb\Day;
use h4kuna\Exchange\Exchange;
use h4kuna\Exchange\ExchangeFactory;
use h4kuna\Exchange\RatingList\CacheEntity;
use h4kuna\Exchange\RatingList\RatingList;
{ # by factory
$exchangeFactory = new ExchangeFactory(
from: 'eur',
to: 'usd',
allowedCurrencies: [
'CZK',
'USD',
'eur', // lower case will be changed to upper case
],
);
$exchange = $exchangeFactory->create();
}
{ # custom RatingList
$ratingList = new RatingList(new DateTimeImmutable(), new DateTimeImmutable(), null, [
'EUR' => new Property(1, 25.0, 'EUR'),
'USD' => new Property(1, 20.0, 'USD'),
'CZK' => new Property(1, 1.0, 'CZK'),
]);
$exchange = new Exchange('EUR', $ratingList, 'USD');
}
echo $exchange->change(100) . PHP_EOL; // EUR -> USD = 125.0
// use only upper case
echo $exchange->change(100, 'CZK') . PHP_EOL; // CZK -> USD = 5.0
echo $exchange->change(100, null, 'CZK') . PHP_EOL; // EUR -> CZK = 2500.0
echo $exchange->change(100, 'USD', 'CZK') . PHP_EOL; // USD -> CZK = 2000.0Download history exchange rates. Make new instance of Exchange with history rate.
use h4kuna\Exchange\RatingList;
use h4kuna\Exchange;
$exchangePast = $exchangeFactory->create(cacheEntity: new CacheEntity(new Datetime('2000-12-30'), new Day));
echo $exchangePast->change(100) . PHP_EOL;use h4kuna\Exchange\Currency\Property;
/* @var $property Property */
$property = $exchange['EUR'];
var_dump($property);
echo PHP_EOL;
foreach ($exchange as $code => $property) {
/* @var $property Property */
var_dump($code, $property);
}The cache invalid automatic at some time, defined by property SourceData::$refresh. From this property is counted time to live. Little better is invalid cache by cron. Because one request on server does not lock other requests. Let's run cron max. 29 minutes before invalidate cache.
use h4kuna\Exchange\RatingList\RatingListCache;
use h4kuna\Exchange\RatingList\CacheEntity;
use h4kuna\Exchange\Driver\Cnb\Day;
/** @var RatingListCache $ratingListCache */
$ratingListCache->rebuild(new CacheEntity(null, new Day));In example, is used h4kuna\Exchange\Driver\Cnb\Day::$refresh is defined at 14:30 + 30 minute the cache is valid. Run cron 14:32 every day.
