[HazardouS]

pawn Code:

CMD:buybiz(playerid, params[]) 
{ 
    new string[128]; 
    new id = IsPlayerNearBusiness(playerid); 
    if(id == -1 || id == 0) return SendClientMessage(playerid, COLOR_RED, "You aren't near in any business"); 
    if(BusinessInfo[id][bPrice] < GetPlayerMoney(playerid)) 
    { 
        if(BusinessInfo[id][bOwned] == 0) 
        { 
            BusinessInfo[id][bOwned] = 1; 
            BusinessInfo[id][bOwner] = PlayerName(playerid); 
            BusinessInfo[id][bLocked] = 0; 
            BusinessInfo[id][bMoney] = 0; 
            GivePlayerMoney(playerid, -BusinessInfo[id][bPrice]); 
        } 
        else 
        { 
            format(string,sizeof(string),"This business is already owned by: %s",BusinessInfo[id][bOwner]); 
            SendClientMessage(playerid, COLOR_RED, string); 
        } 
    } 
    else 
    { 
        SendClientMessage(playerid, COLOR_RED, "You don't have enough money"); 
    } 
    return 1; 
}

There is no need for a loop since you already know the id of the business you are near to. Just check the price and the owner for that particular business and that's it.