order_consumption_system_new/app/Support/EnumTrait.php

<?php
/**
 * Created by PhpStorm.
 * User: ws655
 * Date: 2020/7/28
 * Time: 14:20
 */

namespace App\Support;


use Illuminate\Support\Arr;

trait EnumTrait
{

    public static function enum($attr = null, $key = null)
    {
        $enum = static::getEnumData();

        if (empty($enum))
            return null;

        if ($attr === null)
            return $enum;

        if (!isset($enum[$attr]))
            return null;

        if ($key === null)
            return $enum[$attr];

        return Arr::get($enum[$attr], $key);
    }/*}}}*/

    public static function getEnumData()
    {
        return [];
    }
}