[iggy1]

Returning zero will fail. This is just as good. Since its an "if else" block there is no reason to return (early).

pawn Код:

public OnPlayerRequestSpawn(playerid)
{
    new tmp[128], pName[MAX_PLAYER_NAME];
    GetPlayerName(playerid, pName, sizeof(pName));
    if(PlayerInfo[playerid][pTeam] == 1)
    {
        format(tmp,sizeof(tmp),"%s has spawned",pName);
        SendClientMessageToAll(-1,tmp);
        SpawnPlayer(playerid);
    }
    else
    {
        SendClientMessage(playerid, Red, "You are not in this team");
        return 0;
    }
    return 1;
}

EDIT: just realised what you wanted. I was wrong returning zero wouldn't make it fail.