protected static function engine()
    {
        $engine = '';

        foreach (static::$engines as $name => $function) {
            if ($function === null || function_exists($function)) {
                $engine = $name;
                break;
            }
        }

        return $engine;
    }
protected static function engine()
    {
        $engine = '';

        foreach (static::$engines as $name => $function) {
            if ($function === null || function_exists($function)) {
                $engine = $name;
                break;
            }
        }

        return $engine;
    }
protected static function engine ( ) { $ engine = '' ; foreach ( static :: $ engines as $ name => $ function ) { if ( $ function === null || function_exists ( $ function ) ) { $ engine = $ name ; break ; } } return $ engine ; }
Get name of php Cache engine used.

@return string engine
Get name of php Cache engine used .