amezmo-number-formatter.php

<?php

require_once 'vendor/autoload.php';

class Invoice
{
    /**
     * @var \Stripe\Invoice;
     */
    private $invoice;

    /**
     * Represents a Stripe invoice. Pass in the result from `\Stripe\Invoice::retrieve`
     *
     * @param string $stripeObj stripe api Invoice
     *
     * @see https://stripe.com/docs/api/invoices/retrieve?lang=php
     */
    public function __construct(Stripe\Invoice $invoice)
    {
        $this->invoice = $invoice;
    }
    
    /**
     * Sum all line items in this invoice
     *
     * @return int
     */
    public function getTotal()
    {
        $amount = 0;

        foreach ($this->invoice->lines as $line) {
            $amount += $line->amount;
        }

        return $amount;
    }
    
    /**
     * Get the invoice amount
     *
     * @return string
     */
    public function getPresentableAmount()
    {
        $formatter = new \NumberFormatter(
            'en_US',
            \NumberFormatter::CURRENCY
        );

        return $formatter->formatCurrency(
            $this->getTotal() / 100,
            $this->getCurrency()
        );
    }       
}