API for accessing NBP (Narodowy Bank Polski) currecy rates in PHP
Note: currently only average rate is retrieved.
$nbp = new NbpRepository();
$currencyData = $nbp->getRate('2015-01-02', 'USD');
var_dump($currencyData->avg);
var_dump($currencyData->date);Outputs:
double(3.5725)
string(10) "2015-01-02"
This is usefull when you need to retrieve last available currency rate from working day before specified date.
$nbp = new NbpRepository();
$currencyData = $nbp->getRateBefore('2015-01-02', 'USD');
var_dump($currencyData->avg);
var_dump($currencyData->date);Outputs:
double(3.5072)
string(10) "2014-12-31"
When using cache the amount of HTTP requests to NBP server is minimized.
<?php
use Doctrine\Common\Cache\FilesystemCache;
use MaciejSz\NbpPhp\Service\NbpCache;
use MaciejSz\NbpPhp\NbpRepository;
$cacheBackend = new FilesystemCache(sys_get_temp_dir() . "/nbp-php");
$nbpCache = new NbpCache($cacheBackend);
$nbp = new NbpRepository($nbpCache);
// ...