[LocMax]

PHP код:

dcmd_pay(playerid, params[])
{
    new otherid, cash;
    if(sscanf(params, "ui", otherid, cash)) return SendClientMessage(playerid, 0xFF0000AA, "Usage: /pay [ID] [Cash]");
    if(GetPlayerMoney(playerid) > cash) return SendClientMessage(playerid, COLOR_RED, "You don't have that much!");
    if(!IsPlayerConnected(otherid)) return SendClientMessage(playerid, COLOR_RED, "That PlayerID is not connected!");
    if(otherid == playerid) return SendClientMessage(playerid, COLOR_RED, "It is pointless to pay yourself..");
    GivePlayerMoney(playerid, -cash);
    GivePlayerMoney(otherid, cash);
      return 1;
} 


Better version.
By the way, use zcmd, it's faster.