Add support for PHP 8.1

src/Type/Time.php

@@ -16,10 +16,12 @@ namespace Ramsey\Uuid\Type;
 
 use Ramsey\Uuid\Exception\UnsupportedOperationException;
 use Ramsey\Uuid\Type\Integer as IntegerObject;
+use ValueError;
 use stdClass;
 
 use function json_decode;
 use function json_encode;
+use function sprintf;
 
 /**
  * A value object representing a timestamp
@@ -88,6 +90,17 @@ final class Time implements TypeInterface
         return (string) json_encode($this);
     }
 
+    /**
+     * @return array{seconds: string, microseconds: string}
+     */
+    public function __serialize(): array
+    {
+        return [
+            'seconds' => $this->getSeconds()->toString(),
+            'microseconds' => $this->getMicroseconds()->toString(),
+        ];
+    }
+
     /**
      * Constructs the object from a serialized string representation
      *
@@ -109,4 +122,16 @@ final class Time implements TypeInterface
 
         $this->__construct($time->seconds, $time->microseconds);
     }
+
+    /**
+     * @param array{seconds: string, microseconds: string} $data
+     */
+    public function __unserialize(array $data): void
+    {
+        if (!isset($data['seconds']) || !isset($data['microseconds'])) {
+            throw new ValueError(sprintf('%s(): Argument #1 ($data) is invalid', __METHOD__));
+        }
+
+        $this->__construct($data['seconds'], $data['microseconds']);
+    }
 }