From 6cc3d15ee7819c6206ffcd0209cf90d5b9b482b7 Mon Sep 17 00:00:00 2001
From: Matias Griese <matias@kunena.org>
Date: Tue, 7 Oct 2014 12:22:41 +0300
Subject: [PATCH] Fix warnings when sorting empty collection of pages

---
 system/src/Grav/Common/Page/Pages.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/system/src/Grav/Common/Page/Pages.php b/system/src/Grav/Common/Page/Pages.php
index bbe48e123..408cc15fa 100644
--- a/system/src/Grav/Common/Page/Pages.php
+++ b/system/src/Grav/Common/Page/Pages.php
@@ -173,6 +173,9 @@ class Pages
     public function sortCollection(Collection $collection, $orderBy, $orderDir = 'asc', $orderManual = null)
     {
         $items = $collection->toArray();
+        if (!$items) {
+            return [];
+        }
 
         $lookup = md5(json_encode($items));
         if (!isset($this->sort[$lookup][$orderBy])) {