How to represent this JSON data as PHP?

[TrialByFire]

Hey PHP Homies!

I'm trying to make this JSON into PHP so I can send it to an API using curl.

I have no problem with the first part of it, but I'm getting totally zonked on the cart contents where the items are in their own object.

 

{
   "store_id":"test",
   "api_token":"test",
   "checkout_id":"test",
   "txn_total":"4.00",
   "environment":"qa",
   "action":"preload",
   "cart":{
      "items":[
         {
            "description":"item 1",
            "unit_cost":"1.00",
            "quantity":"3"
         },
         {
            "description":"item 2",
            "unit_cost":"1.00",
            "quantity":"1"
         }
      ],
      "subtotal":"4.00"
   }
}

 

What is the best way to represent something like this in PHP and then convert it to JSON format to send out to CURL?

Thanks in advance!

Edited 16 hours ago by TrialByFire

[Barand]

JSON is a data structure converted to string format to make storage and transfer easier.

Define your json as a a PHP string ...

$json_str = '
            {
               "store_id":"test",
               "api_token":"test",
               "checkout_id":"test",
               "txn_total":"4.00",
               "environment":"qa",
               "action":"preload",
               "cart":{
                  "items":[
                     {
                        "description":"item 1",
                        "unit_cost":"1.00",
                        "quantity":"3"
                     },
                     {
                        "description":"item 2",
                        "unit_cost":"1.00",
                        "quantity":"1"
                     }
                  ],
                  "subtotal":"4.00"
               }
            }
            ';

Provided it is the correct format you use this in the api call.

To use the data in PHP you need to decode it with json_decode()...

$data = json_decode($json_str, true);                       # the second parameter "true" converts it to an array.
                                                            # without it you get a php object.

// view the resulting array data
echo '<pre>' . print_r($data, 1) . '</pre>'; 

... which gives us ...

Array
(
    [store_id] => test
    [api_token] => test
    [checkout_id] => test
    [txn_total] => 4.00
    [environment] => qa
    [action] => preload
    [cart] => Array
        (
            [items] => Array
                (
                    [0] => Array
                        (
                            [description] => item 1
                            [unit_cost] => 1.00
                            [quantity] => 3
                        )

                    [1] => Array
                        (
                            [description] => item 2
                            [unit_cost] => 1.00
                            [quantity] => 1
                        )

                )

            [subtotal] => 4.00
        )

)