PHP code example of tommyknocker / struct

1. Go to this page and download the library: Download tommyknocker/struct library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php. 
    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

tommyknocker / struct example snippets


use tommyknocker\struct\CollectionType;
use tommyknocker\struct\Field;
use tommyknocker\struct\Struct;
use tommyknocker\struct\validation\rules\CountRule;
use tommyknocker\struct\validation\rules\RangeRule;

enum OrderStatus: string
{
    case Paid = 'paid';
}

final class OrderItem extends Struct
{
    #[Field]
    public readonly string $sku;

    #[Field(validationRules: [new RangeRule(1, 100)])]
    public readonly int $quantity;
}

final class Order extends Struct
{
    #[Field(alias: 'order_id', outputAlias: 'id')]
    public readonly string $orderId;

    #[Field]
    public readonly OrderStatus $status;

    #[Field]
    public readonly DateTimeImmutable $createdAt;

    #[Field(OrderItem::class, collection: CollectionType::List, validationRules: [new CountRule(min: 1)])]
    public readonly array $items;
}

$order = Order::fromJson('{
    "order_id": "ord-42",
    "status": "paid",
    "createdAt": "2026-10-25T12:00:00+03:00",
    "items": [{"sku": "A", "quantity": 2}]
}');

$order->items[0]->quantity; // int: 2
$order->status;            // OrderStatus::Paid

$payload = $order->toArray();
// [
//     'id' => 'ord-42',
//     'status' => 'paid',
//     'createdAt' => '2026-10-25T12:00:00.000000+03:00',
//     'items' => [['sku' => 'A', 'quantity' => 2]],
// ]

$json = $order->toJson(pretty: true);