Apply fixes

Author: paulbalandan

user_guide_src/source/database/results/013.php

@@ -16,7 +16,7 @@ public function lastLogin($format)
     public function __set($name, $value)
     {
         if ($name === 'lastLogin') {
-            $this->lastLogin = DateTime::createFromFormat('U', $value);
+            $this->lastLogin = DateTime::createFromFormat('!U', $value);
         }
     }
 

user_guide_src/source/outgoing/response/022.php

@@ -1,4 +1,4 @@
 <?php
 
 $response->setLastModified(date('D, d M Y H:i:s'));
-$response->setLastModified(DateTime::createFromFormat('U', $timestamp));
+$response->setLastModified(DateTime::createFromFormat('!U', $timestamp));