[Boarden]

Simple but works, feel free to edit this to your liking.

Код:

SendTesterMessage(message[])
{
	for(new i; i < MAX_PLAYERS; i++)
	{
		if(PlayerData[i][pAdmin] > 0 || PlayerData[i][pTester] > 0)
		{
			SendClientMessage(i, -1, message);
		}
	}
}

CMD:tchat(playerid, params[])
{
	if(PlayerData[playerid][pAdmin] == 0 && PlayerData[playerid][pTester] == 0) return SendClientMessage(playerid, -1, "You are not an admin/tester.");
	if(isnull(params)) return SendClientMessage(playerid, -1, "CMD: /tchat [text]");

	new testerMsg[128], pName[MAX_PLAYER_NAME+1];
	GetPlayerName(playerid, pName, sizeof(pName));
	format(testerMsg, sizeof(testerMsg), "[Tester Chat] %s: %s", pName, params);
	SendTesterMessage(testerMsg);
	return 1;
}

For showing admin rank you could do something like this

Код:

	if(PlayerData[playerid][pAdmin] > 0) format(testerMsg, sizeof(testerMsg), "[Tester Chat] %s %s: %s", GetAdminRank(playerid), pName, params);
	else format(testerMsg, sizeof(testerMsg), "[Tester Chat] %s %s: %s", GetTesterRank(playerid), pName, params);

Else If wouldn't really be needed since you've already checked if the player should be able to use the chat or not at the start of the command.