Re: Stripping a JSON of extra characters in PHP

Arno Welzel, 2023-02-07 09:16:

> The Doctor, 2023-02-07 02:28:
> 
> [...]
>> cart is subarray with the main array,  added items in the cart
>> is a subarray of the cart.>
>> Source 
>>
>> https://developer.moneris.com/livedemo/checkout/preload_req/guide/dotnet
> 
> No! Cart is an OBJECT there:
> 
> "cart":{
> ...
> }
> 
> Also contact details:
> 
> "contact_details":{
> ...
> }
> 
> The "{" indicates the beginning of an OBJECT while "[" starts an ARRAY.
> 
> As I said: learn how to read JSON and try to understand how that format
> works!
> 
> Also see: <https://www.json.org/json-en.html>

In addition:

To create an OBJECT in PHP use something like this - as a reduced example:

<?php
class CartItem
{
  public $url;
  public $description;
  public $product_code;
  public $unit_cost;
  public $quantity;
}

class TaxItem
{
  public $amount;
  public $description;
  public $rate;
}

class Cart
{
  public $items;
  public $subtotal;
  public $tax;
};

$cart = new Cart();

$cartItem = new CartItem();
$cartItem->url = "https:\/\/example.com\/examples\/item1.jpg";
$cartItem->description = "One item";
$cartItem->product_code = "one_item";
$cartItem->unit_cost = "100.00";
$cartItem->quantity = "1";
$cart->items[] = $cartItem;

$cartItem = new CartItem();
$cartItem->url = "https:\/\/example.com\/examples\/item2.jpg";
$cartItem->description = "Two item";
$cartItem->product_code = "two_item";
$cartItem->unit_cost = "200.00";
$cartItem->quantity = "1";
$cart->items[] = $cartItem;

$cartItem = new CartItem();
$cartItem->url = "https:\/\/example.com\/examples\/item3.jpg";
$cartItem->description = "Three item";
$cartItem->product_code = "three_item";
$cartItem->unit_cost = "100.00";
$cartItem->quantity = "1";
$cart->items[] = $cartItem;

$cart->subtotal = "400.00";

$taxItem = new TaxItem();
$taxItem->amount = "52.00";
$taxItem->description = "Taxes";
$taxItem->rate = "13.00";
$cart->tax = $taxItem;

echo json_encode($cart, JSON_PRETTY_PRINT);
?>

Result of this as formatted output:

{
    "items": [
        {
            "url": "https:\\\/\\\/example.com\\\/examples\\\/item1.jpg",
            "description": "One item",
            "product_code": "one_item",
            "unit_cost": "100.00",
            "quantity": "1"
        },
        {
            "url": "https:\\\/\\\/example.com\\\/examples\\\/item2.jpg",
            "description": "Two item",
            "product_code": "two_item",
            "unit_cost": "200.00",
            "quantity": "1"
        },
        {
            "url": "https:\\\/\\\/example.com\\\/examples\\\/item3.jpg",
            "description": "Three item",
            "product_code": "three_item",
            "unit_cost": "100.00",
            "quantity": "1"
        }
    ],
    "subtotal": "400.00",
    "tax": {
        "amount": "52.00",
        "description": "Taxes",
        "rate": "13.00"
    }
}

Hopefully you understand the idea now - if you don't want an ARRAY in
the JSON then do not create one! If the specification asks for an OBJECT
then use an OBJECT based on a class with named members.

-- 
Arno Welzel
https://arnowelzel.de