test if mb_internal_encoding() is available in functions.php head

diff --git a/include/functions.php b/include/functions.php
index d6bd5fb731295b33efd720327c2565c2380253cc..3ccc09d751d8474748794477beecd9a495843990 100755 (executable)
--- a/include/functions.php
+++ b/include/functions.php
@@ -16,7 +16,9 @@
 
        libxml_disable_entity_loader(true);
 
-       mb_internal_encoding("UTF-8");
+       // separate test because this is included before sanity checks
+       if (function_exists("mb_internal_encoding")) mb_internal_encoding("UTF-8");
+
        date_default_timezone_set('UTC');
        if (defined('E_DEPRECATED')) {
                error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);