[RedJohn]

What about:

pawn Код:

for(new i = 0; i < MAX_PLAYERS; i++)
{
    SetPlayerMarkerForPlayer(i,playerid,0xFFFFFF00);
}

NOTE: Didn't tested!

EDIT: Fully command.

pawn Код:

CMD:rco_hide(playerid, params[])
{
    if(IsPlayerAdmin(playerid))
    {
        SendClientMessage(playerid, COLOR_GREEN, "[PR0-RCON]Hiding you from radar...");
        for(new i = 0; i < MAX_PLAYERS; i++)
        {
            SetPlayerMarkerForPlayer(i,playerid,0xFFFFFF00);
        }
    }
    else
    {
        SendClientMessage(playerid, -1, "SERVER:Unknown command");
    }
    return 1;
}