Netson\L4gettext\L4gettext::setLocale PHP Метод

    public function setLocale($locale)
    {
        // fetch locales list
        $locales = Config::get('l4gettext::locales.list');
        // sanity check
        if (!in_array($locale, $locales)) {
            throw new InvalidLocaleException("The provided locale [{$locale}] does not exist in the list of valid locales [config/locales.php]");
        }
        // set locale in class
        $this->locale = $locale;
        // get localecodeset
        $localecodeset = $this->getLocaleAndEncoding();
        // set environment variable
        if (!putenv('LC_ALL=' . $localecodeset)) {
            throw new EnvironmentNotSetException("The given locale [{$localecodeset}] could not be set as environment [LC_ALL] variable; it seems it does not exist on this system");
        }
        if (!putenv('LANG=' . $localecodeset)) {
            throw new EnvironmentNotSetException("The given locale [{$localecodeset}] could not be set as environment [LANG] variable; it seems it does not exist on this system");
        }
        // set locale - the exception is only thrown in case the app is NOT run from the command line
        // ignoring the cli creates a chicken and egg problem when attempting to fetch the installed locales/encodings,
        // since the ServiceProvider will always attempt to load the locale/encoding before the config files can even be
        // published; thus not allowing the user to change the default settings which should prevent the exception in the first place
        if (!setlocale(LC_ALL, $localecodeset) && !\App::runningInConsole()) {
            throw new LocaleNotFoundException("The given locale [{$localecodeset}] could not be set; it seems it does not exist on this system");
        }
        // save locale to session
        Session::put('l4gettext_locale', $this->locale);
        // return - allow object chaining
        return $this;
    }