[iLearner]

something like this:

PHP код:

// using sscanf, foreach & zcmd
CMD:g(playerid, params[])
{
    new text[128];
    if(sscanf(params, "s[128]", text)) return SendClientMessage(playerid, -1, "Usage: /g <text>");
    SendMessageToClass(playerid, text);
    return 1;
}
stock SendMessageToClass(playerid, text)
{
    new pname[24], str[128];
    GetPlayerName(playerid, pname, sizeof(pname));
    foreach(Player, i)
    {
        if(GetPlayerClass(i) == GetPlayerClass(playerid))
        {
            format(str, sizeof(str), "[Group Chat]%s(%i): %s", pname, playerid, text);
            SendClientMessage(i, -1, str);
        }
    }
}