static public function dumpInstances()
    {
        foreach (static::$instances as $k => $v) {
            echo $k . ':' . get_class($v) . ':'; print_r($v->getOption()); PHP_EOL;
        }
    }
static public function dumpInstances()
    {
        foreach (static::$instances as $k => $v) {
            echo $k . ':' . get_class($v) . ':'; print_r($v->getOption()); PHP_EOL;
        }
    }
static public function dumpInstances ( ) { foreach ( static :: $ instances as $ k => $ v ) { echo $ k . ':' . get_class ( $ v ) . ':' ; print_r ( $ v -> getOption ( ) ) ; PHP_EOL ; } }
dump, use to debug
@return void
dump use to debug