USPS - Address Validation City/State from Zip

{
    "carrier": "USPS",
    "action": "addressvalidate",
    "params": {
      "username": "YOURUSERNAME",
      "to_code": "92101",
      "test": true
    }
  }

<?php
$rs = new RocketShipIt;
$response = $rs->request(
array (
  'carrier' => 'USPS',
  'action' => 'addressvalidate',
  'params' => 
  array (
    'username' => 'YOURUSERNAME',
    'to_code' => '92101',
    'test' => true,
  ),
)
);

rs.request(
  {'action': 'addressvalidate',
 'carrier': 'USPS',
 'params': {'test': True, 'to_code': '92101', 'username': 'YOURUSERNAME'}}

)

rs.request(
  {"carrier"=>"USPS",
 "action"=>"addressvalidate",
 "params"=>{"username"=>"YOURUSERNAME", "to_code"=>"92101", "test"=>true}}

)

rocketshipit.request(
  {
    "carrier": "USPS",
    "action": "addressvalidate",
    "params": {
      "username": "YOURUSERNAME",
      "to_code": "92101",
      "test": true
    }
  }
)