Final php/mySQL question

[CVO Chris]

Half a day later and (I think) I got it! Whew!

<?php

//this pulls the variables from the flash movie when the user
//hits submit.  
$from = $_POST ['from'];
$to = $POST ['to'];

//connect to the database
  $host = "";
  $user = "";
  $pass = "";
  $database = "";

$db_connect = mysql_connect($host, $user, $pass) or die (mysql_error());
$db_select = mysql_select_db($database, $db_connect) or die (mysql_error());

$query = "SELECT * FROM takensquares WHERE id BETWEEN '$from' AND '$to' AND taken = 1";
$result = mysql_query($query) or die(mysql_error());

// count rows of array
$num = mysql_numrows($result);

// loop through results of array and print to screen
$i=0;
while ($i < $num) {
$id=mysql_result($result,$i,"id");
echo $id,",";
$i++;
}
?>

This outputs the results in the following format: 1,25,298,466
Is this the way they should be output for what I'm trying to achieve (ie: separated by commas?).

Just a "yes" or "no" would be a nice confirmation