function CalculateRankings($tableName)
{
$query = "SELECT userid, points FROM $tableName";
$queryResult = mysql_query($query) or die(mysql_error());
$scores = Array();
while($row = mysql_fetch_array($queryResult))
{
$scorePair = Array();
$scorePair["userid"] = $row["userid"];
$scorePair["points"] = $row["points"];
array_push($scores, $scorePair);
}
usort($scores, "CompareScorePairs");
$scores[0]["rank"] = 1;
$rank = 1;
for($i = 1; $i < count($scores); $i++)