diff --git a/php_example/composer.json b/php_example/composer.json
index c4818db..4210dc5 100644
--- a/php_example/composer.json
+++ b/php_example/composer.json
@@ -1,5 +1,7 @@
 {
     "require": {
-        "firebase/php-jwt": "^5.2"
+        "firebase/php-jwt": "^6.11",
+      "ext-curl": "*",
+      "ext-readline": "*"
     }
 }
diff --git a/php_example/enablebanking.php b/php_example/enablebanking.php
index 1439856..799dc49 100644
--- a/php_example/enablebanking.php
+++ b/php_example/enablebanking.php
@@ -2,21 +2,19 @@
 
 include 'vendor/autoload.php';
 
-use \Firebase\JWT\JWT;
+use Firebase\JWT\JWT;
 
-function request($url, $headers=[], $post='')
+function request($url, $headers = [], $post = ''): array
 {
     $ch = curl_init();
     curl_setopt($ch, CURLOPT_URL, $url);
     curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
     curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
     curl_setopt($ch, CURLOPT_HEADER, 0);
-    if(!empty($post))
-    {
+    if (!empty($post)) {
         curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
     }
-    if(count($headers))
-    {
+    if (count($headers)) {
         curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
     }
 
@@ -32,7 +30,7 @@ function request($url, $headers=[], $post='')
 $rsa_key = file_get_contents(dirname(__FILE__) . '/../' . $key_path);
 
 // Creating JWT
-$jwt_header = [ 'typ' => 'JWT', 'alg' => 'RS256', 'kid' => $config->applicationId ];
+$jwt_header = ['typ' => 'JWT', 'alg' => 'RS256', 'kid' => $config->applicationId];
 $payload = [
     'iss' => 'enablebanking.com',
     'aud' => 'api.enablebanking.com',
@@ -48,8 +46,7 @@ function request($url, $headers=[], $post='')
 
 // Requesting application details
 $r = request('https://api.enablebanking.com/application', $headers);
-if($r['status'] === 200)
-{
+if ($r['status'] === 200) {
     $app = json_decode($r['body']);
     echo 'Application details:';
     print_r($app);
@@ -59,8 +56,7 @@ function request($url, $headers=[], $post='')
 
 // Requesting available ASPSPs
 $r = request('https://api.enablebanking.com/aspsps', $headers);
-if($r['status'] === 200)
-{
+if ($r['status'] === 200) {
     $aspsps = json_decode($r['body']);
     echo 'Available ASPSPs:';
     print_r($aspsps);
@@ -71,16 +67,15 @@ function request($url, $headers=[], $post='')
 // Starting authorization
 $valid_until = time() + 2 * 7 * 24 * 60 * 60;
 $body = [
-    'access' => [ 'valid_until' => date('c', $valid_until) ],
-    'aspsp' => [ 'name' => 'Danske Bank', 'country' => 'FI' ], // { name: aspsps[0]['name'], country: aspsps[0]['country'] },
+    'access' => ['valid_until' => date('c', $valid_until)],
+    'aspsp' => ['name' => 'Danske Bank', 'country' => 'FI'], // { name: aspsps[0]['name'], country: aspsps[0]['country'] },
     'state' => 'random',
     'redirect_url' => $app->redirect_urls[0],
     'psu_type' => 'personal'
 ];
 
 $r = request('https://api.enablebanking.com/auth', $headers, json_encode($body));
-if($r['status'] == 200)
-{
+if ($r['status'] == 200) {
     $auth_url = json_decode($r['body'])->url;
     echo 'To authenticate open URL ' . $auth_url . PHP_EOL;
 } else {
@@ -90,13 +85,12 @@ function request($url, $headers=[], $post='')
 // Reading auth code and creating user session
 $auth_code = readline('Enter value of code parameter from the URL you were redirected to: ');
 
-$body = json_encode([ 'code' => $auth_code ]);
+$body = json_encode(['code' => $auth_code]);
 $r = request('https://api.enablebanking.com/sessions', $headers, $body);
-if($r['status'] === 200)
-{
+if ($r['status'] === 200) {
     $session = json_decode($r['body']);
     echo 'New user session has been created:';
-    print_r($session); 
+    print_r($session);
 } else {
     exit('Error response #' . $r['status'] . ':' . $r['body']);
 }
@@ -104,8 +98,7 @@ function request($url, $headers=[], $post='')
 
 // Retrieving account balances
 $r = request('https://api.enablebanking.com/accounts/' . $account_uid . '/balances', $headers);
-if($r['status'] === 200)
-{
+if ($r['status'] === 200) {
     $balances = json_decode($r['body'])->balances;
     echo 'Balances: ';
     print_r($balances);
@@ -115,22 +108,18 @@ function request($url, $headers=[], $post='')
 
 // Retrieving account transactions (since yesterday)
 $continuation_key = null;
-do
-{
+do {
     $params = '?date_from=' . date('Y-m-d', strtotime('-1 day', time()));
-    if($continuation_key)
-    {
+    if ($continuation_key) {
         $params .= '&continuation_key=' . $continuation_key;
     }
     $r = request('https://api.enablebanking.com/accounts/' . $account_uid . '/transactions' . $params, $headers);
-    if($r['status'] === 200)
-    {
+    if ($r['status'] === 200) {
         $rest_data = json_decode($r['body']);
         $transactions = $rest_data->transactions;
         echo 'Transactions:';
         print_r($transactions);
-        if(isset($rest_data->continuation_key) && $rest_data->continuation_key)
-        {
+        if (isset($rest_data->continuation_key) && $rest_data->continuation_key) {
             $continuation_key = $rest_data->continuation_key;
             echo 'Going to fetch more transaction with continaution key ' . $continuation_key;
         } else {
@@ -140,5 +129,4 @@ function request($url, $headers=[], $post='')
     } else {
         exit('Error response #' . $r['status'] . ':' . $r['body']);
     }
-}
-while(true);
+} while (true);