[[RP]Rav]

Well, I guess you already have a /login command, just do something like this

pawn Код:

if (strcmp(cmdtext, "/login", true) == 0)
{

  [...]

  OnPlayerLogin(playerid);
  return 1;
}

and somewhere else in your script

pawn Код:

stock OnPlayerLogin(playerid)
{
  // add your code here
  // you don't need to make it public unless you want to put it in a timer
}