Finder::getIndexedLanguages

static function getIndexedLanguages()
{
	$langs = Option::get('sale', self::SALE_LOCATION_INDEXED_LANGUAGES_OPT, '', '');
	$langsFromDb = static::getLangsFromDb();

	if($langs == '')
		return array_keys($langsFromDb);

	$result = array();
	$langs = explode(':', $langs);

	if(is_array($langs))
	{
		foreach($langs as $lang)
		{
			if(isset($langsFromDb[$lang]))
				$result[] = $lang;
		}
	}

	return array_unique($result);
}