[DrTHE]

pawn Код:

if(GetPlayerID(inputtext) == -1) return SendClientMessage(playerid, -1, "Error, invalid name connected!");
new pID = GetPlayerID(inputtext);

pawn Код:

stock GetPlayerID(Name[])
{
    for(new i; i<MAX_PLAYERS; i++)
    {
      if(IsPlayerConnected(i))
      {
        new pName[MAX_PLAYER_NAME];
        GetPlayerName(i, pName, sizeof(pName));
        if(strcmp(Name, pName, true) == 0) 
    {
    break;
    return i;
    }
      }
    }
    return -1;
}

I think it should work.

Sorry for the bad indentation, I'm on the phone.