From 5dab92836b53cc11fee3eb9c1eb2e9f876b7c496 Mon Sep 17 00:00:00 2001
From: Sof <virtualsof@yahoo.fr>
Date: Mon, 30 Nov 2015 12:27:58 +0100
Subject: [PATCH] FIX: Warning: implode(): Invalid arguments passed

 Declare array type before implode to avoid warning
---
 htdocs/core/class/extrafields.class.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/htdocs/core/class/extrafields.class.php b/htdocs/core/class/extrafields.class.php
index 5cdc9f39a14..aed58a6556d 100644
--- a/htdocs/core/class/extrafields.class.php
+++ b/htdocs/core/class/extrafields.class.php
@@ -1551,7 +1551,7 @@ class ExtraFields
 				else if (in_array($key_type,array('checkbox')))
 				{
 					$value_arr=GETPOST($keysuffix."options_".$key.$keyprefix);
-					$value_key=implode(',', $value_arr);
+					$value_key=implode(',', (array)$value_arr);
 				}
 				else if (in_array($key_type,array('price','double')))
 				{
-- 
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