JSON to PHP class

How to use it

1. Enter json input and root type name.
2. The result appears straight away and updates as you edit.
3. Copy the result, or copy a link that keeps the same values to share it.

How it is calculated

int, float, string, bool, array and mixed, with a final class per object and typed public properties. A field that can be null or missing becomes ?T defaulting to null, and the array item type goes in a @var comment such as list<string>.

Example

Inputs: Root type name = Root. Result: Generated code: <?php declare(strict_types=1); final class Root { public int $id; public string $name; public string $email; public bool $isActive; // JSON key: "is_active" public float $balance; /** @var list<string> */ public array $tags; public Address $address; /** @var list<Order> */ public array $orders; } final class Address { public string $city; public string $postalCode; // JSON key: "postal_code" } final class Order { public string $orderId; // JSON key: "order_id" public float $total; public ?string $coupon = null; }; Types generated: 3; Fields: 13.

{
  "id": 1024,
  "name": "Sara Ahmed",
  "email": "sara@example.com",
  "is_active": true,
  "balance": 1520.75,
  "tags": ["vip", "riyadh"],
  "address": { "city": "Riyadh", "postal_code": "12211" },
  "orders": [
    { "order_id": "A-1", "total": 99.5, "coupon": "EID10" },
    { "order_id": "A-2", "total": 120, "coupon": null }
  ]
}

<?php

declare(strict_types=1);

final class Root
{
    public int $id;
    public string $name;
    public string $email;
    public bool $isActive; // JSON key: "is_active"
    public float $balance;
    /** @var list<string> */
    public array $tags;
    public Address $address;
    /** @var list<Order> */
    public array $orders;
}

final class Address
{
    public string $city;
    public string $postalCode; // JSON key: "postal_code"
}

final class Order
{
    public string $orderId; // JSON key: "order_id"
    public float $total;
    public ?string $coupon = null;
}

Limits and caveats

• Needs PHP 8.0 or newer because of the mixed type.
• The classes do not fill themselves from JSON; use json_decode and assign the properties, or a hydration library.