In this example each case in the WheelSize enum class has a $price property and a constructor that initializes the property. The getPrice() method is used to retrieve the price of a particular enum case. The $wheelSizePrices associative array maps prices to the corresponding WheelSize enum cases.

WheelSize.php

<?php
enum WheelSize: int
{
    case size_20 = 20;
    case size_24 = 24;
    case size_28 = 28;

    private int $price;

    public function __construct(int $price)
    {
        $this->price = $price;
    }

    public function getPrice(): int
    {
        return $this->price;
    }
}

// create a mapping of prices to enum cases
$wheelSizePrices = [
    100 => WheelSize::size_20,
    200 => WheelSize::size_24,
    300 => WheelSize::size_28
];

// map a price to the enum class
$price = 100;
if (isset($wheelSizePrices[$price])) {
    $wheelSizeEnum = $wheelSizePrices[$price];
} else {
    throw new InvalidArgumentException("Invalid wheel size price: $price");
}

// get the price of the mapped enum case
$price = $wheelSizeEnum->getPrice();
>