Exchange
Exchange is PHP script works with currencies. You can convert price, format add VAT or only render exchange rates.
Here is changelog.
Extension for framework
Installation via composer
$ composer require h4kuna/exchangeHow to use
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\CriticalCache;use h4kuna\Exchange;
$cacheFactory = new CriticalCache\CacheFactory('exchange');
$exchangeFactory = new Exchange\ExchangeFactory(
from: 'eur',
to: 'usd',
allowedCurrencies: [
'CZK',
'USD',
'eur', // lower case will be changed to upper case
],
cacheFactory: $cacheFactory
);
$exchange = $exchangeFactory->create();
echo $exchange->change(100); // EUR -> USD = 125.0
// use only upper case
echo $exchange->change(100, 'CZK'); // CZK -> USD = 5.0
echo $exchange->change(100, NULL, 'CZK'); // EUR -> CZK = 2500.0
echo $exchange->change(100, 'USD', 'CZK'); // USD -> CZK = 2000.0Change driver and date
Download history exchange rates. Make new instance of Exchange with history rate.
use h4kuna\Exchange\RatingList;
use h4kuna\Exchange;
$exchangePast = $exchange->modify(cacheEntity: new RatingList\CacheEntity(new \Datetime('2000-12-30'), Exchange\Driver\Cnb\Day::class));
$exchangePast->change(100);Access and iterator
/* @var $property Exchange\Currenry\Property */
$property = $exchange['EUR'];
var_dump($property);
foreach ($exchange as $code => $property) {
/* @var $property Exchange\Currenry\Property */
var_dump($property);
}Caching
The cache invalid automatic at some time, defined by property Driver::$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. 15 minutes before invalidate cache.
use h4kuna\Exchange\RatingList\RatingListCache;
use h4kuna\Exchange\RatingList\CacheEntity;
use h4kuna\Exchange\Driver\Cnb\Day;
/** @var RatingListCache $ratingListCache */
$ratingListCache->rebuild(new CacheEntity(null, Day::class));In example, is used h4kuna\Exchange\Driver\Cnb\Day::$refresh is defined at 15:00. Run cron 14:55 every day.
