State API

Hello I’m trying to add US states with PHP api like

<?php elseif ($userInfo->country->isoCode == ‘US’) { ?>

how can i use STATES with country code or directly with state, there is CONTINENT->CODE == that i reached however for states, i didn’t. i just want to add

->country->isocode ==’us’ && “”state->code”” ==’texas’) for example

is there anyone to tried it? i didn’t find any documentation about it