README

ForexAPI PHP Client

This is a PHP client for the ForexAPI. It provides an easy-to-use interface for interacting with the API's endpoints. The ForexAPI offers a free plan and provides foreign exchange rates and currency conversion.
The API documentation can be found at https://forexapi.eu/en/docs.

Get a free API key

Requirements

• PHP 7.4 or higher
• json extension
• Composer

Installation

Use Composer to install the ForexAPI PHP Client:

composer require forexapi/client

This package does not come with a Http Client. You can use any PSR-18 compatible client.
If you have multiple Http Clients installed, you can specify which one to use.

composer require guzzlehttp/guzzle forexapi/client

Usage

Create an instance of the Client class directly with your API key:

use ForexAPI\Client\Client;

$client = new Client('your-api-key');

Create new instance using the ForexAPI\Client\ForexAPIClientBuilder class:

use \ForexAPI\Client\ForexAPIClientBuilder;

$builder = (new ForexAPIClientBuilder())
    ->withApiKey('your-api-key')
    ->withBaseUri('https://forexapi.eu/api/')
    ->withHttpAdapter($yourCustomHttpAdapter)
    ->build()
;

Using your own PSR-18 client and PSR-17 request factory is optional. If you don't provide them, the client will try to discover them automatically.

use \ForexAPI\Client\ForexAPIClientBuilder;

$builder = (new ForexAPIClientBuilder())
    ->withApiKey('your-api-key')
    ->withPsr18Client($yourCustomPsr18Client)
    ->withPsr17RequestFactory($yourCustomPsr17RequestFactory)
    ->build()
;

Get Live Quote

To get a live quote for a specific currency pair:

$quote = $client->getLiveQuote('USD', 'PLN');

echo $quote->getBase(); // USD
echo $quote->getCounter(); // PLN
echo $quote->getBid(); // Bid price
echo $quote->getAsk(); // Ask price
echo $quote->getMid(); // Mid price
echo $quote->getTimestamp(); // Timestamp

Get Exchange Rate

To get the exchange rate between two currencies:

$exchangeRate = $client->getExchangeRate('USD', 'PLN');

echo $exchangeRate->getFrom(); // USD
echo $exchangeRate->getTo(); // PLN
echo $exchangeRate->getRate(); // Exchange rate
echo $exchangeRate->getTimestamp(); // Timestamp

If you would like to get multiple exchange rates at once, you can use the getExchangeRates method.
It accepts an array of counter currencies as an argument:

$exchangeRate = $client->getExchangeRates('USD', ['PLN', 'EUR', 'GBP']);

Convert Currency

To convert an amount from one currency to another:

$conversion = $client->convert('USD', 'PLN', 100.0);

echo $conversion->getFrom(); // USD
echo $conversion->getTo(); // PLN
echo $conversion->getAmount(); // 100.0
echo $conversion->getResult(); // Converted amount in PLN
echo $conversion->getTimestamp(); // Timestamp

If you would like to convert to multiple currencies at once, you can use the convertMany method:

$conversions = $client->convertMany('USD', ['PLN', 'EUR', 'GBP'], 100.0);

Testing

This library includes a suite of unit tests. Run them using PHPUnit:

./vendor/bin/phpunit

License

This project is licensed under the MIT License. See the LICENSE file for details.