Write a PHP class model from a dynamic array keys - php

Question

I am consuming an API that returns data in a strange way.
When a successfull request is made I get a response like this:
{
"data": {
...,
"rooms_available": [
{
"1": {
"hotel": "d9c5e4ca-1234-4321-8a97-kas123s",
"hotel_name": "Hotel name",
"history": [
{
"uuid": "d9c76322-f404-aa-b913-asd123",
"quantity": 0,
"room_id": "7b15fa32-f427-22-83bd-asd123",
"prices": {
"2023-04-13": {
"MXN": {
"regular_price_day": 0,
"member_price_day": 0,
"promotion_price_day": 0
},
"USD": {
"regular_price_day": 0,
"member_price_day": 0,
"promotion_price_day": 0
}
}
}
}
]
}
}
]
...,
}
}
I have the following model:
class MyResponse {
public Data $data;
public function __construct(Data $data) {
$this->data = $data;
}
public static function fromJson(array $data): self {
return new self(
Data::fromJson($data['data'])
);
}
}
class Data {
public array $roomsAvailable;
public function __construct(array $roomsAvailable) {
$this->roomsAvailable = $roomsAvailable;
}
public static function fromJson(array $data): self {
return new self(
array_map(static function($data) {
return RoomsAvailable::fromJson($data);
}, $data['rooms_available'])
);
}
}
I am doing the request and then I serialize the response doing:
$response = MyResponse::fromJson( $request->getContent() ); // getting the raw content of result
Everything is ok but the issue is that, for rooms_available and some other keys, it has dynamic keys like "1" or dates like "2023-04-13".
The thing is that I don't know how to represent that into a PHP object.
I am using this tool to convert JSON to PHP objects
https://jacobdekeizer.github.io/json-to-php-generator/#/
I have being using the fromJson strategy to serialize the request from the entire project and it has being going ok until now.
Which for the prices object from the respose, it generates this model:
class Prices
{
public 2023_04_13 $2023_04_13;
public function __construct(2023_04_13 $2023_04_13)
{
$this->2023_04_13 = $2023_04_13;
}
public static function fromJson(array $data): self
{
return new self(
2023_04_13::fromJson($data['2023-04-13'])
);
}
}
or the RoomsAvailable response
class RoomsAvailable
{
public 1 $1;
public function __construct(1 $1)
{
$this->1 = $1;
}
public static function fromJson(array $data): self
{
return new self(
1::fromJson($data['1'])
);
}
}
These classes are not valid due to those numbers used as keys in the JSON response.
How can I properly serialize the response into a PHP object?
I tried flatting the array one level on those nodes where there are number keys but it didn't worked.