update

README.md

@@ -86,8 +86,11 @@ $bill->setNoteOfRedelivary(false);
 $billRequest = new BillRequest($bill);
 
 $soapMessage = $fis->signXML($billRequest->toXML());
-$res = $fis->sendSoap($soapMessage);
-var_dump($res);
+$response    = $fis->sendSoap($soapMessage);
+
+$parser = new ResponseParser($response);
+$jir    = $parser->getJir();
+var_dump($jir);
 ```
 
 ### OpenSSL 3

src/Fiskalizacija.php

@@ -21,6 +21,7 @@ class Fiskalizacija
     private $url = "https://cis.porezna-uprava.hr:8449/FiskalizacijaService";
     private $privateKeyResource;
     private $publicCertificateData;
+    private $signedInfoSignature;
 
     public function __construct($path, $pass, $security = 'SSL', $demo = false)
     {

src/ResponseParse.php

@@ -0,0 +1,31 @@
+<?php namespace Nticaric\Fiskalizacija;
+
+use DOMDocument;
+use DOMXPath;
+use Exception;
+
+class ResponseParser
+{
+    private $document;
+    private $xpath;
+
+    public function __construct($response)
+    {
+        $this->document = new DOMDocument();
+        $this->document->loadXML($response);
+        $this->xpath = new DOMXPath($this->document);
+        // Register the namespaces used in the SOAP response
+        $this->xpath->registerNamespace('soap', 'http://schemas.xmlsoap.org/soap/envelope/');
+        $this->xpath->registerNamespace('tns', 'http://www.apis-it.hr/fin/2012/types/f73');
+    }
+
+    public function getJir()
+    {
+        $query   = '/soap:Envelope/soap:Body/tns:RacunOdgovor/tns:Jir';
+        $entries = $this->xpath->query($query);
+        if ($entries->length > 0) {
+            return $entries->item(0)->nodeValue;
+        }
+        throw new Exception('JIR value not found in the response');
+    }
+}