1. Go to this page and download the library: Download b3it/x-rechnung-ubl library. Choose the download type require.
2. Extract the ZIP file and open the index.php.
3. Add this code to the index.php.
<?php
require_once('vendor/autoload.php');
/* Start to develop here. Best regards https://php-download.com/ */
b3it / x-rechnung-ubl example snippets
use UBL\Builder;
use UBL\Invoice;
use UBL\CommonAggregateComponents\MonetaryTotalType;
use UBL\UnqualifiedDataTypes\AmountType;
use UBL\UnqualifiedDataTypes\IdentifierType;
$invoice = new Invoice();
$invoice->setId(new IdentifierType('RE-2026-0001'));
$invoice->setIssueDate(new DateTime('2026-07-06'));
$legalMonetaryTotal = new MonetaryTotalType();
$legalMonetaryTotal->setLineExtensionAmount(new AmountType(314.86, 'EUR'));
$legalMonetaryTotal->setTaxExclusiveAmount(new AmountType(314.86, 'EUR'));
$legalMonetaryTotal->setTaxInclusiveAmount(new AmountType(336.90, 'EUR'));
$legalMonetaryTotal->setPayableAmount(new AmountType(336.90, 'EUR'));
$invoice->setLegalMonetaryTotal($legalMonetaryTotal);
$builder = new Builder();
$xml = $builder->serializeInvoice($invoice);
echo $xml;
use UBL\Builder;
use UBL\Invoice;
$builder = new Builder();
$xmlString = file_get_contents('invoice.xml');
/** @var Invoice $invoice */
$invoice = $builder->deserialize($xmlString, Invoice::class);
echo $invoice->getLegalMonetaryTotal()->getPayableAmount()->getValue();