[Konstantinos]

That's the mistake, the function is supposed to get a vehicle ID and not a vehicle model ID.

PHP код:

GetVehicleName(vehicleid, model = 0)
{
    new String[32] = "N/A";
    if(!model)
    {
        new modelid = GetVehicleModel(vehicleid);
        if(modelid) strcpy(String, VehicleNames[modelid - 400], sizeof(String));
    }
    else
    {
        if(400 <= vehicleid <= 611) strcpy(String, VehicleNames[modelid - 400], sizeof(String));
    }
    return String;
} 


Use the second parameter when you want to pass the model ID. Examples:

pawn Код:

GetVehicleName(vehicleid)
GetVehicleName(modelid, 1)