hyperf-chat/app/Constants/TalkMode.php

<?php

namespace App\Constants;

/**
 * 聊天对话模式
 *
 * @package App\Constants
 */
class TalkMode
{
    // 私信
    const PRIVATE_CHAT = 1;

    // 群聊
    const GROUP_CHAT = 2;

    public static function getTypes()
    {
        return [
            self::PRIVATE_CHAT,
            self::GROUP_CHAT
        ];
    }
}