From 2770bb0d377888120d442068d425a6bccf1a82fd Mon Sep 17 00:00:00 2001
From: Dennis Eichhorn <spl1nes.com@googlemail.com>
Date: Thu, 26 Oct 2017 20:00:53 +0200
Subject: [PATCH] Make sure foreach is traversable

---
 Validation/Validator.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Validation/Validator.php b/Validation/Validator.php
index ecb079c71..4f1d9b593 100644
--- a/Validation/Validator.php
+++ b/Validation/Validator.php
@@ -39,6 +39,10 @@ final class Validator extends ValidatorAbstract
      */
     public static function isValid($var, array $constraints = null) : bool
     {
+        if(!isset($constraints)) {
+            return true;
+        }
+
         foreach ($constraints as $callback => $settings) {
             $callback = StringUtils::endsWith($callback, 'Not') ? substr($callback, 0, -3) : $callback;
             $valid = self::$callback($var, ...$settings);