jingcai-php/app/Enums/SaleState.php

<?php

namespace App\Enums;

use BenSampo\Enum\Enum;

/**
 * @method static static Selling()
 * @method static static StopSelling()
 */
final class SaleState extends Enum
{
    const Selling =   'selling';
    const StopSelling =   'stopSelling';
}