Core_Core::run

protected static function run()
{
    if (IS_CLI || IS_SYSTEM_MODE)
    {
        Core::execute(Core::$path_info);
    }
    else
    {
        ob_start();

        try
        {
            Core::execute(Core::$path_info);
        }
        catch (Exception $e)
        {
            $code = $e->getCode();

            if (404===$code || E_PAGE_NOT_FOUND===$code)
            {
                Core::show_404($e->getMessage());
            }
            elseif (500===$code)
            {
                Core::show_500($e->getMessage());
            }
            else
            {
                Core::show_500($e);
            }
        }

        Core::$output = ob_get_clean();
    }
}