Swap allows you to retrieve currency exchange rates from various services such as Fixer or currencylayer and optionally cache the results. It is integrated to other libraries like moneyphp/money and provides a Symfony Bundle and a Laravel Package.
$ composer require php-http/curl-client nyholm/psr7 php-http/message florianv/swap
use Swap\Builder; // Build Swap $swap = (new Builder()) // Use the Fixer.io service as first level provider ->add('fixer', ['access_key' => 'your-access-key']) // Use the currencylayer.com service as first fallback ->add('currency_layer', ['access_key' => 'secret', 'enterprise' => false]) ->build(); // Get the latest EUR/USD rate $rate = $swap->latest('EUR/USD'); // 1.129 $rate->getValue(); // 2016-08-26 $rate->getDate()->format('Y-m-d'); // Get the EUR/USD rate 15 days ago $rate = $swap->historical('EUR/USD', (new \DateTime())->modify('-15 days'));
We recommend to use the services that support our project, providing a free plan up to 1,000 requests per day.
The documentation for the current branch can be found here.
We are proudly supported by the following exchange rate providers offering free plans up to 1,000 requests per day:
Fixer is a simple and lightweight API for foreign exchange rates that supports up to 170 world currencies. They provide real-time rates and historical data, however, EUR is the only available base currency on the free plan.
Currencylayer provides reliable exchange rates and currency conversions for your business up to 168 world currencies. They provide real-time rates and historical data, however, USD is the only available base currency on the free plan.
Here is the list of the currently implemented services:
|Service||Base Currency||Quote Currency||Historical|
|Fixer||EUR (free, no SSL), * (paid)||*||Yes|
|currencylayer||USD (free), * (paid)||*||Yes|
|coinlayer||* Crypto (Limited standard currencies)||* Crypto (Limited standard currencies)||Yes|
|European Central Bank||EUR||*||Yes|
|National Bank of Romania||RON||*||Yes|
|Central Bank of the Republic of Turkey||*||TRY||Yes|
|Central Bank of the Czech Republic||*||CZK||Yes|
|Central Bank of Russia||*||RUB||Yes|
|Bulgarian National Bank||*||BGN||Yes|
|1Forge||* (free but limited or paid)||* (free but limited or paid)||No|
|Cryptonator||* Crypto (Limited standard currencies)||* Crypto (Limited standard currencies)||No|
|CurrencyDataFeed||* (free but limited or paid)||* (free but limited or paid)||No|
|Open Exchange Rates||USD (free), * (paid)||*||Yes|
|Currency Converter API||*||*||Yes (free but limited or paid)|
Additionally, you can add your own services as long as they implement the
The MIT License (MIT). Please see LICENSE for more information.