A Laravel package for current and historical currency exchange rates & crypto exchange rates based on the free API provided by exchangerate.host

#Laravel Currency

Update: exchangerate.host now requires API key, a new version will be released soon to support API keys

Laravel currency is a simple package for current and historical currency exchange rates & crypto exchange rates. based on the free API exchangerate.host - no API keys needed!

Note: This package is an integration for the Currency library

#Requirements

• PHP >= 7.2
• Laravel >= 6.0
• guzzlehttp >= 6.0

#Installation

composer require amrshawky/laravel-currency

#Usage

#1. Currency Conversion

To convert from one currency to another you may chain the methods:

use AmrShawky\LaravelCurrency\Facade\Currency;
 
Currency::convert()
        ->from('USD')
        ->to('EUR')
        ->get();

This will return the converted amount or null on failure.

The amount to be converted is default to 1, you may specify the amount:

use AmrShawky\LaravelCurrency\Facade\Currency;
 
Currency::convert()
        ->from('USD')
        ->to('EUR')
        ->amount(50)
        ->get();

#Available Methods

• Convert currency using historical exchange rates YYYY-MM-DD:

use AmrShawky\LaravelCurrency\Facade\Currency;
 
Currency::convert()
        ->from('USD')
        ->to('EUR')
        ->date('2019-08-01')
        ->get();

• Round the converted amount to decimal places:

use AmrShawky\LaravelCurrency\Facade\Currency;
 
Currency::convert()
        ->from('USD')
        ->to('EUR')
        ->round(2)
        ->get();

• You may also switch data source between forex default, bank view or crypto currencies:

use AmrShawky\LaravelCurrency\Facade\Currency;
 
Currency::convert()
        ->from('BTC')
        ->to('ETH')
        ->source('crypto')
        ->get();

#2. Latest Rates

To get latest rates you may chain the methods:

use AmrShawky\LaravelCurrency\Facade\Currency;
 
Currency::rates()
        ->latest()
        ->get();
 
// ['USD' =>  1.215707, ...]
 
Currency::rates()
        ->latest()
        ->source('crypto')
        ->get();
 
// ['ETH' => 3398.61, ...]

This will return an array of all available currencies or null on failure.

#Available Methods

• Just like currency conversion you may chain any of the available methods:

use AmrShawky\LaravelCurrency\Facade\Currency;
 
Currency::rates()
        ->latest()
        ->symbols(['USD', 'EUR', 'EGP']) //An array of currency codes to limit output currencies
        ->base('GBP') //Changing base currency (default: EUR). Enter the three-letter currency code of your preferred base currency.
        ->amount(5.66) //Specify the amount to be converted
        ->round(2) //Round numbers to decimal places
        ->source('ecb') //Switch data source between forex `default`, bank view or crypto currencies.
        ->get();

#3. Historical Rates

Historical rates are available for most currencies all the way back to the year of 1999.

use AmrShawky\LaravelCurrency\Facade\Currency;
 
Currency::rates()
        ->historical('2020-01-01') //`YYYY-MM-DD` Required date parameter to get the rates for
        ->get();
 
// ['USD' =>  1.1185, ...]
 
Currency::rates()
        ->historical('2021-03-30')
        ->source('crypto')
        ->get();
 
// ['BTC' =>  2.0E-5, ...]

Same as latest rates you may chain any of the available methods:

use AmrShawky\LaravelCurrency\Facade\Currency;
 
Currency::rates()
        ->historical('2020-01-01')
        ->symbols(['USD', 'EUR', 'CZK'])
        ->base('GBP')
        ->amount(5.66)
        ->round(2)
        ->source('ecb')
        ->get();

#4. Timeseries Rates

Timeseries are for daily historical rates between two dates of your choice, with a maximum time frame of 365 days. This will return an array or null on failure.

use AmrShawky\LaravelCurrency\Facade\Currency;
 
Currency::rates()
        ->timeSeries('2021-05-01', '2021-05-02') //`YYYY-MM-DD` Required dates range parameters
        ->symbols(['USD']) //[optional] An array of currency codes to limit output currencies
        ->base('GBP') //[optional] Changing base currency (default: EUR). Enter the three-letter currency code of your preferred base currency.
        ->amount(5.66) //[optional] Specify the amount to be converted (default: 1)
        ->round(2) //[optional] Round numbers to decimal places
        ->source('ecb') //[optional] Switch data source between forex `default`, bank view or crypto currencies.
        ->get();
 
/**
[
    '2021-05-01' => [
        "USD" => 1.201995
    ],
    '2021-05-02' => [
        "USD" => 1.2027
    ]
]
 */

#5. Fluctuations

Retrieve information about how currencies fluctuate on a day-to-day basis, with a maximum time frame of 365 days. This will return an array or null on failure.

use AmrShawky\LaravelCurrency\Facade\Currency;
 
Currency::rates()
        ->fluctuations('2021-03-29', '2021-04-15') //`YYYY-MM-DD` Required dates range parameters
        ->symbols(['USD']) //[optional] An array of currency codes to limit output currencies
        ->base('GBP') //[optional] Changing base currency (default: EUR). Enter the three-letter currency code of your preferred base currency.
        ->amount(5.66) //[optional] Specify the amount to be converted (default: 1)
        ->round(2) //[optional] Round numbers to decimal places
        ->source('ecb') //[optional] Switch data source between forex `default`, bank view or crypto currencies.
        ->get();
 
/**
 [
    'USD' => [
        "start_rate" => 1.376454,
        "end_rate"   => 1.37816,
        "change"     => -0.001706,
        "change_pct" => -0.001239
        ]
 ]
 */

#Throwing Exceptions

The default behavior is to return null for errors that occur during the request (connection timeout, DNS errors, client or server error status code, missing API success parameter, etc.).

If you would like to throw an exception instead, you may use the throw method, The throw method returns the currency instance, allowing you to chain other methods:

use AmrShawky\LaravelCurrency\Facade\Currency;
 
Currency::convert()
        ->from('USD')
        ->to('EUR')
        ->amount(20)
        ->throw()
        ->get();

If you would like to perform some additional logic before the exception is thrown, you may pass a closure to the throw method:

use AmrShawky\LaravelCurrency\Facade\Currency;
 
Currency::convert()
        ->from('USD')
        ->to('EUR')
        ->amount(20)
        ->throw(function ($response, $e) {
            //
        })
        ->get();

#Other Methods

• You may use the withoutVerifying method to indicate that TLS certificates should not be verified when sending the request:

use AmrShawky\LaravelCurrency\Facade\Currency;
 
Currency::convert()
        ->from('USD')
        ->to('EUR')
        ->withoutVerifying()
        ->get();

• You may specify additional Guzzle request options using the withOptions method. The withOptions method accepts an array of key / value pairs:

use AmrShawky\LaravelCurrency\Facade\Currency;
 
Currency::rates()
        ->historical('2021-04-30')
        ->withOptions([
            'debug'   => true,
            'timeout' => 3.0
        ])
        ->get();

• The when method will execute the given callback when the first argument given to the method evaluates to true:

use AmrShawky\LaravelCurrency\Facade\Currency;
 
Currency::rates()
        ->latest()
        ->when(true, function ($rates) {
            // will execute
            $rates->symbols(['USD', 'EUR', 'EGP'])
                  ->base('GBP');
        })
        ->when(false, function ($rates) {
            // won't execute
            $rates->symbols(['HKD']);
        })
        ->get();

#Testing

Currency uses Laravel facades which makes it easy to mock so it's not actually executed during the test:

use AmrShawky\LaravelCurrency\Facade\Currency;
 
Currency::shouldReceive('convert')
        ->once()
        ->andReturn(1.50);
 
 
Currency::shouldReceive('rates')
         ->once()
         ->andReturn(['EUR' => 1,'USD' => 1.215707]);

More information regarding list of bank sources here

For a list of all supported symbols here and list of crypto currencies here

#License

The MIT License (MIT). Please see LICENSE for more information.