Laravel version update

Laravel version update

vendor/symfony/http-foundation/Session/Storage/MockFileSessionStorage.php

@@ -24,14 +24,9 @@ namespace Symfony\Component\HttpFoundation\Session\Storage;
  */
 class MockFileSessionStorage extends MockArraySessionStorage
 {
-    /**
-     * @var string
-     */
     private $savePath;
 
     /**
-     * Constructor.
-     *
      * @param string      $savePath Path of directory to save session files
      * @param string      $name     Session name
      * @param MetadataBag $metaBag  MetadataBag instance
@@ -96,7 +91,26 @@ class MockFileSessionStorage extends MockArraySessionStorage
             throw new \RuntimeException('Trying to save a session that was not started yet or was already closed');
         }
 
-        file_put_contents($this->getFilePath(), serialize($this->data));
+        $data = $this->data;
+
+        foreach ($this->bags as $bag) {
+            if (empty($data[$key = $bag->getStorageKey()])) {
+                unset($data[$key]);
+            }
+        }
+        if (array($key = $this->metadataBag->getStorageKey()) === array_keys($data)) {
+            unset($data[$key]);
+        }
+
+        try {
+            if ($data) {
+                file_put_contents($this->getFilePath(), serialize($data));
+            } else {
+                $this->destroy();
+            }
+        } finally {
+            $this->data = $data;
+        }
 
         // this is needed for Silex, where the session object is re-used across requests
         // in functional tests. In Symfony, the container is rebooted, so we don't have