[yom]

Mmmh, the strval bug will crash with any characters (if i remember). And anyway, why not checking the lenght of the full command?

pawn Code:

public OnPlayerCommandText(playerid,cmdtext[])
{
  if (strlen(cmdtext) > 45)
  {
    Ban(playerid);
    return 1;
  }

  return 0;
}