Make codestyle happy

Signed-off-by: Sven Rautenberg <sven@rtbg.de>

Author: SvenRtbg

src/Pattern/CallbackCache.php

@@ -7,6 +7,7 @@
 
 use function array_key_exists;
 use function array_values;
+use function is_array;
 use function is_callable;
 use function is_object;
 use function md5;
@@ -111,19 +112,18 @@ public function generateKey(callable $callback, array $args = []): string
      */
     protected function generateCallbackKey(callable $callback, array $args): string
     {
+        if (! is_callable($callback, false, $callbackKey)) {
+            throw new Exception\InvalidArgumentException('Invalid callback');
+        }
 
         // Create a cache key for the ObjectCache use case.
         $options = $this->getOptions();
-        if (is_object($options->getObject())) {
+        if (is_object($options->getObject()) && is_array($callback) && isset($callback[1])) {
             $callbackKey = md5($options->getObjectKey() . '::' . strtolower($callback[1]));
             $argumentKey = $this->generateArgumentsKey($args);
             return $callbackKey . $argumentKey;
         }
 
-        if (! is_callable($callback, false, $callbackKey)) {
-            throw new Exception\InvalidArgumentException('Invalid callback');
-        }
-
         // functions, methods and classnames are case-insensitive
         $callbackKey = strtolower($callbackKey);
 

test/Pattern/TestAsset/TestObjectCache.php

@@ -4,6 +4,8 @@
 
 namespace LaminasTest\Cache\Pattern\TestAsset;
 
+use Closure;
+
 use function func_get_args;
 use function implode;
 
@@ -22,13 +24,15 @@ final class TestObjectCache
     /** @var string */
     public $property = 'testProperty';
 
-    private \Closure $closure;
+    public Closure $closure;
 
     public function __construct()
     {
         // Closures prevent serialization - this acts as a detector to verify this object is not serialized during test.
-        $this->closure = function () {};
+        $this->closure = function (): void {
+        };
     }
+
     public function bar(): string
     {
         ++static::$fooCounter;
@@ -49,4 +53,10 @@ public function __invoke(): string
     public function emptyMethod(): void
     {
     }
+
+    public function fakeUseOfClosure(): void
+    {
+        $closure = $this->closure;
+        $closure();
+    }
 }