im-demo-server/app/Enum/MessageTypeEnum.php

<?php

namespace App\Enum;

enum MessageTypeEnum: int
{
    // 消息类型 0：文本 1：图片 2：音频 3：视频 4：处方 5：病例 6：视频通话
    case Text = 0;
    case Image = 1;
    case Audio = 2;
    case Video = 3;
    case Prescription = 4;
    case Case = 5;
    case VideoCall = 6;


    /**
     * @return string
     */
    public function description(): string
    {
        return match ($this) {
            self::Text => '文本',
            self::Image => '图片',
            self::Audio => '音频',
            self::Video => '视频',
            self::Prescription => '处方',
            self::Case => '病例',
            self::VideoCall => '视频通话',
            default => '未知',
        };
    }

}