[DarkSkull]

PHP код:

stock GetPlayerID(playername[])
{
  for(new i = 0; i <= MAX_PLAYERS; i++)
  {
    if(IsPlayerConnected(i))
    {
      new playername2[MAX_PLAYER_NAME];
      GetPlayerName(i, playername2, sizeof(playername2));
      if(strcmp(playername2, playername, true, strlen(playername)) == 0)
      {
        return i;
      }
    }
  }
  return INVALID_PLAYER_ID;
} 


Try this.

You also need to check if the player is connected in your id command.

PHP код:

CMD:id(playerid, params[])
{
    new id,string[150],name[24],pname[24];
    if(sscanf(params, "u", name)) return SendClientMessage(playerid,-1,"Usage: /id [name]");
    id = GetPlayerID(name);
    if(id=INVALID_PLAYER_ID) return SendClientMessage(playerid, -1, "Player not connected!");
    GetPlayerName(id,pname,24);
    format(string,sizeof(string),"%d %s",id,pname);
    SendClientMessage(playerid,COLOR_LIGHTGRAY,string);
    return 1;
}