yoghi/madda

diff -uBbw a/src/Utils/Callback.php b/src/Utils/Callback.php
index a4e5e95..dc3cbce 100644
--- a/src/Utils/Callback.php
+++ b/src/Utils/Callback.php
@@ -95,7 +95,11 @@
         });

         try {
+            if (defined('HHVM_VERSION')) {
+                $res = call_user_func_array($function, $args);
+            } else {
             $res = $function(...$args);
+            }
             restore_error_handler();
             return $res;