This is a fork of florianv/symfony-swap for the use in Part-DB.
Swap allows you to retrieve currency exchange rates from various services such as Fixer, Currency Data or Exchange Rates Data and optionally cache the results.
|  | Fixer is a simple and lightweight API for foreign exchange rates that supports up to 170 world currencies. | 
|  | Currency Data provides reliable exchange rates and currency conversions for your business up to 168 world currencies. | 
|  | Exchange Rates Data provides reliable exchange rates and currency conversions for your business with over 15 data sources. | 
$ composer require part-db/swap-bundle php-http/message php-http/guzzle6-adapter ^1.0The complete documentation can be found here.
Here is the list of the currently implemented services:
| Service | Base Currency | Quote Currency | Historical | 
|---|---|---|---|
| Fixer | EUR (free, no SSL), * (paid) | * | Yes | 
| Currency Data | USD (free), * (paid) | * | Yes | 
| Exchange Rates Data | USD (free), * (paid) | * | Yes | 
| Abstract | * | * | Yes | 
| coinlayer | * Crypto (Limited standard currencies) | * Crypto (Limited standard currencies) | Yes | 
| Fixer | EUR (free, no SSL), * (paid) | * | Yes | 
| currencylayer | USD (free), * (paid) | * | Yes | 
| exchangeratesapi | USD (free), * (paid) | * | Yes | 
| European Central Bank | EUR | * | Yes | 
| National Bank of Georgia | * | GEL | Yes | 
| National Bank of the Republic of Belarus | * | BYN (from 01-07-2016), BYR (01-01-2000 - 30-06-2016), BYB (25-05-1992 - 31-12-1999) | Yes | 
| National Bank of Romania | RON, AED, AUD, BGN, BRL, CAD, CHF, CNY, CZK, DKK, EGP, EUR, GBP, HRK, HUF, INR, JPY, KRW, MDL, MXN, NOK, NZD, PLN, RSD, RUB, SEK, TRY, UAH, USD, XAU, XDR, ZAR | RON, AED, AUD, BGN, BRL, CAD, CHF, CNY, CZK, DKK, EGP, EUR, GBP, HRK, HUF, INR, JPY, KRW, MDL, MXN, NOK, NZD, PLN, RSD, RUB, SEK, TRY, UAH, USD, XAU, XDR, ZAR | Yes | 
| National Bank of Ukranie | * | UAH | Yes | 
| Central Bank of the Republic of Turkey | * | TRY | Yes | 
| Central Bank of the Republic of Uzbekistan | * | UZS | Yes | 
| Central Bank of the Czech Republic | * | CZK | Yes | 
| Central Bank of Russia | * | RUB | Yes | 
| Bulgarian National Bank | * | BGN | Yes | 
| WebserviceX | * | * | No | 
| 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 | 
| Xignite | * | * | Yes | 
| Currency Converter API | * | * | Yes (free but limited or paid) | 
| xChangeApi.com | * | * | Yes | 
| fastFOREX.io | USD (free), * (paid) | * | No | 
| exchangerate.host | * | * | Yes | 
| Array | * | * | Yes | 
The MIT License (MIT). Please see LICENSE for more information.
