From 4afa565382df3b4e776828f8db524be7d57ef661 Mon Sep 17 00:00:00 2001
From: Flavio Copes <copesc@gmail.com>
Date: Thu, 5 May 2016 16:28:56 +0200
Subject: [PATCH] Fix #563 Invalid argument supplied for foreach

---
 classes/controller.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/classes/controller.php b/classes/controller.php
index 29146ce3..2a78cbe1 100644
--- a/classes/controller.php
+++ b/classes/controller.php
@@ -2062,13 +2062,13 @@ class AdminController
             $header = $input['header'];
 
             foreach ($header as $key => $value) {
-                if ($key == 'metadata') {
+                if ($key == 'metadata' && is_array($header[$key])) {
                     foreach ($header['metadata'] as $key2 => $value2) {
                         if (isset($input['toggleable_header']['metadata'][$key2]) && !$input['toggleable_header']['metadata'][$key2]) {
                             $header['metadata'][$key2] = '';
                         }
                     }
-                } elseif ($key == 'taxonomy') {
+                } elseif ($key == 'taxonomy' && is_array($header[$key])) {
                     foreach ($header[$key] as $taxkey => $taxonomy) {
                         if (is_array($taxonomy) && count($taxonomy) == 1 && trim($taxonomy[0]) == '') {
                             unset($header[$key][$taxkey]);