Are there any specific PHP libraries or tools recommended for generating XRechnung invoices?

To generate XRechnung invoices in PHP, it is recommended to use the Factur-X library. This library provides functionalities to create and manipulate XRechnung invoices easily. By using Factur-X, you can ensure that your invoices comply with the XRechnung standard and are compatible with various accounting systems.

// Include the Factur-X library
require_once 'path/to/facturx/vendor/autoload.php';

use FacturX\FacturX;

// Create a new FacturX instance
$facturX = new FacturX();

// Generate XRechnung invoice
$invoiceData = [
    'invoice_number' => 'INV-001',
    'issue_date' => '2022-01-01',
    'due_date' => '2022-01-31',
    // Add more invoice data here
];

$facturX->createInvoice($invoiceData);

// Save the generated XRechnung invoice
$facturX->saveInvoice('path/to/save/invoice.xrechnung');