USPS - Time in Transit

{
  "carrier": "USPS-REST",
  "action": "TimeInTransit",
  "params": {
    "key": "your-key-from-authenticate-request",
    "test": true,
    "shipper": "RocketShipIt",
    "ship_contact": "Mark Sanborn",
    "ship_phone": "1231231234",
    "ship_addr1": "123 Main St",
    "ship_city": "Whitehall",
    "ship_state": "MT",
    "ship_code": "59759",
    "ship_country": "US",
    "to_country": "US",
    "to_code": "90210"
  }
}

<?php
$rs = new RocketShipIt;
$response = $rs->request(
array (
  'carrier' => 'USPS-REST',
  'action' => 'TimeInTransit',
  'params' => 
  array (
    'key' => 'your-key-from-authenticate-request',
    'test' => true,
    'shipper' => 'RocketShipIt',
    'ship_contact' => 'Mark Sanborn',
    'ship_phone' => '1231231234',
    'ship_addr1' => '123 Main St',
    'ship_city' => 'Whitehall',
    'ship_state' => 'MT',
    'ship_code' => '59759',
    'ship_country' => 'US',
    'to_country' => 'US',
    'to_code' => '90210',
  ),
)
);

rs.request(
  {'action': 'TimeInTransit',
 'carrier': 'USPS-REST',
 'params': {'key': 'your-key-from-authenticate-request',
            'ship_addr1': '123 Main St',
            'ship_city': 'Whitehall',
            'ship_code': '59759',
            'ship_contact': 'Mark Sanborn',
            'ship_country': 'US',
            'ship_phone': '1231231234',
            'ship_state': 'MT',
            'shipper': 'RocketShipIt',
            'test': True,
            'to_code': '90210',
            'to_country': 'US'}}

)

rs.request(
  {"carrier"=>"USPS-REST",
 "action"=>"TimeInTransit",
 "params"=>
  {"key"=>"your-key-from-authenticate-request",
   "test"=>true,
   "shipper"=>"RocketShipIt",
   "ship_contact"=>"Mark Sanborn",
   "ship_phone"=>"1231231234",
   "ship_addr1"=>"123 Main St",
   "ship_city"=>"Whitehall",
   "ship_state"=>"MT",
   "ship_code"=>"59759",
   "ship_country"=>"US",
   "to_country"=>"US",
   "to_code"=>"90210"}}

)

rocketshipit.request(
  {
  "carrier": "USPS-REST",
  "action": "TimeInTransit",
  "params": {
    "key": "your-key-from-authenticate-request",
    "test": true,
    "shipper": "RocketShipIt",
    "ship_contact": "Mark Sanborn",
    "ship_phone": "1231231234",
    "ship_addr1": "123 Main St",
    "ship_city": "Whitehall",
    "ship_state": "MT",
    "ship_code": "59759",
    "ship_country": "US",
    "to_country": "US",
    "to_code": "90210"
  }
}
)