​<?php

$supported = ['de', 'en', 'fr', 'it', 'es', 'pl', 'nl', 'ja', 'ko', 'zh'];

$lang = strtolower(substr($_SERVER['HTTP_ACCEPT_LANGUAGE'] ?? 'en', 0, 2));

if (!in_array($lang, $supported, true)) {
    $lang = 'en';
}

header("Location: babyhrv-" . $lang . ".php");
exit;
?>