you could use a multi-dimensional array:
$array["Bob Smith"][0]="value";
$array["Sven Tobrand"][0]="value";
$array["Sven Tobrand"][1]="value";
$array["Sven Tobrand"][2]="value";
If you want to know which values a person owns ...
$person = "Sven Tobrand";
do
{
$current_st = current($array[$person]);
echo "$current<BR>";
}
while(next($array[$person]));
and so on.