[Mencent]

Hello.

You don't send the message to the player(s).
Try this.

PHP код:

CMD:streamforall(playerid,params[])
{
    if(PlayerInfo[playerid][pAdmin] >= 4)
    {
        new url[200],name[MAX_PLAYER_NAME];
        if(sscanf(params,"s[200]",url))return SendClientMessage(playerid,-1,"{FF0000}Syntax: /streamforall [url]");
        GetPlayerName(playerid,name,sizeof(name));
        format(string,sizeof(string),"Song Played by %s.\tType /stopplay to stop the music",name);
        SendClientMessage(playerid,-1,string);
        for(new i;i<MAX_PLAYERS;i++)
        {
            if(!IsPlayerConnected(i) || IsPlayerNPC(i))continue;
            PlayAudioStreamForPlayer(i,url);
        }
    }
    else
    {
        SendClientMessage(playerid,-1,"{FF0000}Error:{FFFFFF} You are not authorized to use this command!");
    }
    return 1;
}