public static function are_requirements_met() {
        $enabled = ini_get('apc.enabled') && (php_sapi_name() != "cli" || ini_get('apc.enable_cli'));
        if (!extension_loaded('apcu') || !$enabled) {
            return false;
        }

        $version = phpversion('apcu');
        return $version && version_compare($version, self::REQUIRED_VERSION, '>=');
    }