Shipping Calculator

Shipping calculation library based on Symfony 2 components.

Installation

Add in your composer.json the require entry for this library.

{
    "require": {
        "shiptor/shipping-calculator": "*"
    }
}

and run composer install (or update) to download all files.

Usage

How to create a calculator?

Example code below will create the calculator for a single shipment method.

$config = include __DIR__.'/../src/Resources/DHL/ExportExpressWorldWide/tariff_2015_08_25_usa.php';
$calculator = new BaseCalculator([
    'handler' => DhlHandler::create($config)
]);

What is what:

• DhlCalculatorHandler contains calculation algorithm for the Dhl Express Shipping Method;
• $config contains configuration for the DhlHandler;
• BaseCalculator is a wrapper for a calculation handlers, it contains an algorithm "How to use calculation handlers" and returns a calculation result;

How to calculate a package shipping?

Example code below will create a package and calculate shipping cost for Dhl Express.

// previous example code here

$weight = new Weight();
$weight->setValue(10);
$weight->setUnit('lb');

$dimensions = new Dimensions();
$dimensions->setLength(10);
$dimensions->setWidth(10);
$dimensions->setHeight(10);
$dimensions->setUnit('in');

$senderAddress = new Address();
$senderAddress->setCountryCode('USA');

$recipientAddress = new Address();
$recipientAddress->setCountryCode('RUS');

$package = new Package();
$package->setWeight($weight);
$package->setDimensions($dimensions);
$package->setSenderAddress($senderAddress);
$package->setRecipientAddress($recipientAddress);

$result = $calculator->calculate($package);

What is what:

• Weight contains information about physical weight;
• Dimensions contains information about package box dimensions. It is required to calculate a volumetric weight of your package;
• $senderAddress and $recipientAddress contains information about sender and recipient;
• Package is a wrapper object to all objects above. You will need to pass this object to calculate method of your calculator;
• $result contains your package and resulting calculation data;

How to extend a calculator?

Shipping calculator uses symfony event dispatcher and you can use it to extend calculation algorithms as you need. For example, you can increase shipping cost by 10$.

// place calculator creation code here

$calculator->getDispatcher()->addListener(Events::AFTER_CALCULATE, function (AfterCalculateEvent $event) {
    $event->getResult()->setShippingCost($event->getResult()->getShippingCost() + 10);
});

What is what:

• Events::AFTER_CALCULATE is an event calling when calculation ends and calculation result is ready;
• AfterCalculateEvent is an event object which contains calculation result and package. Look to other available events here;

More ideas how to use and extend shipping calculator

• create calculation handlers for other couriers and shipping methods;
• create calculators and realize your own algorithms using handlers;