Convert array syntax and other minor code style adjustments.

src/Frontend/DataController.php

@@ -28,13 +28,13 @@ class DataController
      *
      * @var array
      */
-    private $input = array(
+    private $input = [
         'format' => 'geojson',
         'type'   => 'layer',
         'id'     => null,
         'filter' => null,
-        'values' => null
-    );
+        'values' => null,
+    ];
 
     /**
      * Debug mode.
@@ -140,9 +140,9 @@ class DataController
             default:
                 $error = true;
 
-                return array($data, $error);
+                return [$data, $error];
         }
 
-        return array($data, $error);
+        return [$data, $error];
     }
 }

src/Frontend/RequestUrl.php

@@ -57,12 +57,12 @@ class RequestUrl implements \JsonSerializable
      */
     public static function create($dataId, $type = null, $format = null, Request $request = null)
     {
-        $params = array(
+        $params = [
             'for'    => $request ? $request->getMapIdentifier() : null,
             'type'   => $type != 'layer' ? $type : null,
             'id'     => $dataId,
-            'format' => $format != 'geojson' ? $format : null
-        );
+            'format' => $format != 'geojson' ? $format : null,
+        ];
 
         $hash  = base64_encode(implode(',', $params));
         $query = 'leaflet=' . $hash;