23005 USD order label ALL 225 fr_FR issuerlogin@hipay.com value 1 value 2 value 3 first product name first product description 5.2 225 1 REF1 shipping 25 VAT 19.6% second product name second product description 2.14 225 2 REF2 VAT 19.6% shipping 5.25 15% "; /* * Var $data contain the XML string describing your order */ $data = trim($xml); // your website Hipay key $signKey = 'a65eb46d338a40e41955dc56e1af55a5'; $encodedData = base64_encode($data); $md5Sign = md5($encodedData.$signKey); ?>