[Sandra18[NL]]

Code:

new LastMoney[MAX_PLAYERS];

//OnGameModeInit

Code:

SetTimer("AntiMoneyCheat", 1000, 1);

//OnPlayerConnect(playerid)

Code:

LastMoney[playerid] = 0;

Code:

forward AntiMoneyCheat();
public AntiMoneyCheat()
{
  for(new i; i<MAX_PLAYERS; i++)
  {
    if(IsPlayerConnected(i))
    { 
      if(LastMoney[i] > 0)
      {
        if(GetPlayerMoney(i) - LastMoney[i] > 500)
        {
          SendClientMessage(i, 0xFF0000AA, "Money Cheater");
          Ban(i);
        }
      }
      LastMoney[i] = GetPlayerMoney(i);
    }
  }
}