Null coalescing.

module/VuFind/src/VuFind/ILS/Driver/NoILS.php

@@ -89,7 +89,7 @@ class NoILS extends AbstractBase implements TranslatorAwareInterface
      */
     public function getConfig($function, $params = null)
     {
-        return isset($this->config[$function]) ? $this->config[$function] : false;
+        return $this->config[$function] ?? false;
     }
 
     /**
@@ -99,8 +99,7 @@ class NoILS extends AbstractBase implements TranslatorAwareInterface
      */
     protected function getIdPrefix()
     {
-        return isset($this->config['settings']['idPrefix'])
-            ? $this->config['settings']['idPrefix'] : null;
+        return $this->config['settings']['idPrefix'] ?? null;
     }
 
     /**
@@ -131,8 +130,7 @@ class NoILS extends AbstractBase implements TranslatorAwareInterface
      */
     public function getStatus($id)
     {
-        $useStatus = isset($this->config['settings']['useStatus'])
-            ? $this->config['settings']['useStatus'] : 'none';
+        $useStatus = $this->config['settings']['useStatus'] ?? 'none';
         if ($useStatus == "custom") {
             $status = $this->translate($this->config['Status']['status']);
             return [
@@ -173,8 +171,7 @@ class NoILS extends AbstractBase implements TranslatorAwareInterface
      */
     public function getStatuses($idList)
     {
-        $useStatus = isset($this->config['settings']['useStatus'])
-            ? $this->config['settings']['useStatus'] : 'none';
+        $useStatus = $this->config['settings']['useStatus'] ?? 'none';
         if ($useStatus == "custom" || $useStatus == "marc") {
             $status = [];
             foreach ($idList as $id) {
@@ -201,8 +198,7 @@ class NoILS extends AbstractBase implements TranslatorAwareInterface
      */
     public function getHolding($id, array $patron = null)
     {
-        $useHoldings = isset($this->config['settings']['useHoldings'])
-            ? $this->config['settings']['useHoldings'] : 'none';
+        $useHoldings = $this->config['settings']['useHoldings'] ?? 'none';
 
         if ($useHoldings == "custom") {
             return [
@@ -250,8 +246,7 @@ class NoILS extends AbstractBase implements TranslatorAwareInterface
      */
     protected function getFormattedMarcDetails($recordDriver, $configSection)
     {
-        $marcStatus = isset($this->config[$configSection])
-            ? $this->config[$configSection] : false;
+        $marcStatus = $this->config[$configSection] ?? false;
         if ($marcStatus) {
             $field = $marcStatus['marcField'];
             unset($marcStatus['marcField']);
@@ -285,8 +280,7 @@ class NoILS extends AbstractBase implements TranslatorAwareInterface
      */
     public function hasHoldings($id)
     {
-        $useHoldings = isset($this->config['settings']['useHoldings'])
-            ? $this->config['settings']['useHoldings'] : '';
+        $useHoldings = $this->config['settings']['useHoldings'] ?? '';
 
         // "none" will be processed differently in the config depending
         // on whether it's in or out of quotes; handle both cases.
@@ -342,8 +336,7 @@ class NoILS extends AbstractBase implements TranslatorAwareInterface
      */
     public function getOfflineMode()
     {
-        return isset($this->config['settings']['mode'])
-            ? $this->config['settings']['mode'] : "ils-offline";
+        return $this->config['settings']['mode'] ?? 'ils-offline';
     }
 
     /**
@@ -355,8 +348,7 @@ class NoILS extends AbstractBase implements TranslatorAwareInterface
      */
     public function loginIsHidden()
     {
-        return isset($this->config['settings']['hideLogin'])
-            ? $this->config['settings']['hideLogin'] : false;
+        return $this->config['settings']['hideLogin'] ?? false;
     }
 
     /**