protected function add_lang($lang_file)
{
if (is_array($lang_file)) {
foreach ($lang_file as $file) {
$this->add_lang($file);
}
}
$lang_path = __DIR__ . "/../../phpBB/language/en/{$lang_file}.php";
$lang = array();
if (file_exists($lang_path)) {
include $lang_path;
}
$this->lang = array_merge($this->lang, $lang);
}