Gdn_Locale::set PHP Method

    public function set($LocaleName)
    {
        $CurrentLocale = self::canonicalize($LocaleName);
        // Get locale sources
        $this->Locale = $CurrentLocale;
        if ($this->addonManager !== null) {
            $LocaleSources = $this->addonManager->getEnabledTranslationPaths($CurrentLocale);
        } else {
            $LocaleSources = [];
        }
        $Codeset = c('Garden.LocaleCodeset', 'UTF8');
        $SetLocale = array(LC_TIME, "{$CurrentLocale}.{$Codeset}", $CurrentLocale);
        list($Language) = explode('_', $CurrentLocale, 2);
        if (isset(self::$SetLocales[$Language])) {
            $FullLocales = (array) self::$SetLocales[$Language];
            foreach ($FullLocales as $FullLocale) {
                $SetLocale[] = "{$FullLocale}.{$Codeset}";
                $SetLocale[] = $FullLocale;
            }
        }
        $r = call_user_func_array('setlocale', $SetLocale);
        if (!is_array($LocaleSources)) {
            $LocaleSources = array();
        }
        // Create a locale config container
        $this->unload();
        $ConfLocaleOverride = PATH_CONF . '/locale.php';
        foreach ($LocaleSources as $localeSource) {
            if ($ConfLocaleOverride != $localeSource && file_exists($localeSource)) {
                // Don't double include the conf override file... and make sure it comes last
                $this->load($localeSource, false);
            }
        }
        // Also load any custom defined definitions from the conf directory
        if (file_exists($ConfLocaleOverride)) {
            $this->load($ConfLocaleOverride, true);
        }
        // Prepare developer mode if needed
        $this->DeveloperMode = c('Garden.Locales.DeveloperMode', false);
        if ($this->DeveloperMode) {
            $this->DeveloperContainer = new Gdn_Configuration();
            $this->DeveloperContainer->splitting(false);
            $this->DeveloperContainer->caching(false);
            $DeveloperCodeFile = PATH_CACHE . "/locale-developer-{$LocaleName}.php";
            if (!file_exists($DeveloperCodeFile)) {
                touch($DeveloperCodeFile);
            }
            $this->DeveloperContainer->load($DeveloperCodeFile, 'Definition', true);
        }
        // Import core (static) translations
        if ($this->DeveloperMode) {
            $this->DeveloperContainer->massImport($this->LocaleContainer->get('.'));
        }
        // Allow hooking custom definitions
        $this->fireEvent('AfterSet');
    }