public function setVisitorLanguage($languageId)
{
$languages = XenForo_Application::isRegistered('languages') ? XenForo_Application::get('languages') : XenForo_Model::create('XenForo_Model_Language')->getAllLanguagesForCache();
if ($languageId && !empty($languages[$languageId])) {
$language = $languages[$languageId];
} else {
$defaultLanguageId = XenForo_Application::get('options')->defaultLanguageId;
if (!empty($languages[$defaultLanguageId])) {
$language = $languages[$defaultLanguageId];
} else {
$language = reset($languages);
}
}
if (!$language) {
return;
// this probably shouldn't happen
}
if (empty($language['phrase_cache'])) {
$language['phrase_cache'] = array();
}
$this->_language = $language;
XenForo_Phrase::setLanguageId($language['language_id']);
XenForo_Phrase::setPhrases($language['phrase_cache']);
XenForo_Locale::setDefaultLanguage($language);
}
