[JaYmE]

Try

pawn Code:

dcmd_suggest(playerid, params[])
{
  new string[128];
  if (sscanf(params, "s", string))
  {
    new File:handle = fopen("suggestions.txt", io_append);
    new Year, Month, Day, Hour, Min, Sec, pName[25], pIP[20];
    GetDate(Month, Day, Hour);
    GetTime(Day, Min, Sec);
    GetPlayerName(playerid, pName, sizeof(pName));
    GetPlayerIp(playerid, pIP, sizeof(pIP));
    format(string, 128, "|%d/%d|%d:%d|%s: %s|(%s)|\r\n", Day, Month, Hour, Min, pName, string, pIP);
    fwrite(handle, string);
    fclose(handle);
    SendClientMessage(playerid, 0xC0C0C0FF, "Suggestion Send");
  }
  else
  {
    SendClientMessage(playerid, 0xC0C0C0FF, "USAGE: /suggest [text]");
  }
  return 1;
}

Should work