php - Magento: Change step order in checkout page -

i'm trying change order of steps in magento onepage checkout. need move review step before payment selection.

i've looked on internet solution found change order in app/code/core/mage/checkout/block/onepage/abstract.php

i've tried it, nothing changed.

what did creating file inside app/code/local/mage/checkout/block/onepage/abstract.phpand inside file i've changed line 208 in:

   protected function _getstepcodes() {     return array('login', 'billing', 'shipping', 'shipping_method', 'review', 'payment'); } 

what missing here?

(i'm using magento 1.9.1.1)

don't change php code.keep is.i think let php work. show thing want. go app->design->frontend->[package-name]->default->template->checkout->onepage->progress.phtml , open , change order accordingly. have fun.