setAttribute('xmlns:o', self::NS_OWNCLOUD); // adding the retry node $error = $errorNode->ownerDocument->createElementNS('o:', 'o:retry', var_export($this->retry, true)); $errorNode->appendChild($error); // adding the message node $error = $errorNode->ownerDocument->createElementNS('o:', 'o:reason', $this->getMessage()); $errorNode->appendChild($error); } }