Someone

$data = "select count(id) as total, to_member, avg(votes) as votes from voting group by to_member order by votes DESC limit 40";
$result = mysql_query($data) or die (mysql_error());
$num= 1;

$nums = array();
$names = array();

while($ratings = mysql_fetch_assoc($result)) { 
$rateavg   =$ratings['votes'];
$votename  =$ratings['to_member'];
$total     =$ratings['total'];

//echo "&num=".$num."<br>";
//echo "&votename=".$votename."<br>";

$nums[] = $num;
$names[] = $votename;

}

$url = "&num=" . implode(":", $nums) . "&name=" . implode(":", $names);

echo $url;