[Flake.]

pawn Код:

forward SendMessageToOfficialFaction(playerid, color,const string[]);
public SendMessageToOfficialFaction(playerid, color,const string[]) 
{
    for(new i = 0; i < MAX_PLAYERS; i++)
    {
        if(IsPlayerConnected(i) == 1)
        if(PlayerInfo[i][pFaction] == PlayerInfo[playerid][pFaction])
        SendClientMessage(i, color, string);
    }
    return 1;
}

Try that