From a83ac7d982fa4f9d49ac3e6dedac8b489f2f7baa Mon Sep 17 00:00:00 2001
From: Arun Persaud <arun@nubati.net>
Date: Sun, 27 May 2018 11:52:43 -0700
Subject: [PATCH] fix error when language is not set

---
 include/functions.php | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/include/functions.php b/include/functions.php
index f3495a4..ee02b0a 100644
--- a/include/functions.php
+++ b/include/functions.php
@@ -1715,9 +1715,14 @@ function verify_password($email, $password)
 function detectlanguage()
 {
 	/* read out browser's prefered language, taken from php-manual*/
-	$langcode = explode(";", $_SERVER['HTTP_ACCEPT_LANGUAGE']);
-	$langcode = explode(",", $langcode['0']);
-	return $langcode['0'];
+  if(isset($_SERVER["HTTP_ACCEPT_LANGUAGE"]))
+    {
+      $langcode = explode(";", $_SERVER['HTTP_ACCEPT_LANGUAGE']);
+      $langcode = explode(",", $langcode['0']);
+      return $langcode['0'];
+    }
+  else
+    return 'en';
 }
 
 function set_language($l,$type='lang')
-- 
2.17.1