Merge pull request #5633 from EliuFlorez/patch-9

3.0 RC1: Get Date String errors

src/Validation/Validation.php

@@ -984,7 +984,7 @@ class Validation
         $formatted = '';
         if (
             isset($value['year'], $value['month'], $value['day']) &&
-            (is_numeric($value['year']) & is_numeric($value['month']) && is_numeric($value['day']))
+            (is_numeric($value['year']) && is_numeric($value['month']) && is_numeric($value['day']))
         ) {
             $formatted .= sprintf('%d-%02d-%02d ', $value['year'], $value['month'], $value['day']);
         }