From bd8cc3d73834e24e4c835d954d1b0ef179d6b6a6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?David=20Fern=C3=A1ndez?= <david@mundosaparte.com>
Date: Sun, 28 May 2017 03:26:03 +0200
Subject: [PATCH] Improve memory usage at Query/Builder/chunkById (#19369)

* Improve the usage of memory

* StyleCI

* StyleCI
---
 src/Illuminate/Database/Query/Builder.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/Illuminate/Database/Query/Builder.php b/src/Illuminate/Database/Query/Builder.php
index c41bf1ff7804..4fa473b99172 100755
--- a/src/Illuminate/Database/Query/Builder.php
+++ b/src/Illuminate/Database/Query/Builder.php
@@ -1863,6 +1863,8 @@ public function chunkById($count, callable $callback, $column = 'id', $alias = n
             }
 
             $lastId = $results->last()->{$alias};
+
+            unset($results);
         } while ($countResults == $count);
 
         return true;