Error : E_NOTICE

Undefined index: HTTP_ACCEPT_LANGUAGE

1
/kunden/332211_12685/websites/other/te-sa.de/te-sa.de/memyc/bootstrap/bootstrap/controller/Controller.php, line 175
172.             }
173. 
174.             // set by Browser
175.             $browserLanguage = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
176.             if (isset($browserLanguage)) {
177.                 $this->registry->language = $browserLanguage;
178.             }