From 1f55a12bf8711deea71845867ebd5d37d68076d9 Mon Sep 17 00:00:00 2001
From: Simey Lameze <simey@moodle.com>
Date: Wed, 23 Jul 2014 14:54:10 +0800
Subject: [PATCH] MDL-46433 blog: fix error message when creating an external
 blog

---
 blog/lib.php | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/blog/lib.php b/blog/lib.php
index 9190e465881..72ce6ce7ca0 100644
--- a/blog/lib.php
+++ b/blog/lib.php
@@ -181,9 +181,11 @@ function blog_sync_external_entries($externalblog) {
             $filtertags = array_map('trim', $filtertags);
             $filtertags = array_map('strtolower', $filtertags);
 
-            foreach ($categories as $category) {
-                if (in_array(trim(strtolower($category->term)), $filtertags)) {
-                    $containsfiltertag = true;
+            if (!empty($categories)) {
+                foreach ($categories as $category) {
+                    if (in_array(trim(strtolower($category->term)), $filtertags)) {
+                        $containsfiltertag = true;
+                    }
                 }
             }