Helper: [[https://github.com/ROMOPAT/easybill-php-helper]]
  * [[https://soap.easybill.de/soap.easybill.php?wsdl]]
  * [[https://soap.easybill.de/wsdl/soap.customer.xsd]]
  * [[https://soap.easybill.de/wsdl/soap.document.xsd]]
  * [[https://soap.easybill.de/wsdl/soap.companyposition.xsd]]

Beispielcode: [[http://www.easybill.de/blog/index.php/tag/rechnungssystem-shop/]]