Numerating Comments - php

Question

The code below prints out all comments for a given "submissionid" in chronological order. How could I numerate these comments? (In other words, how do I print out a "1." next to the oldest comment, a "2." next to the second-oldest comment, etc.?)
$submission = mysql_real_escape_string($_GET['submission']);
$submissionid = mysql_real_escape_string($_GET['submissionid']);
$sqlStr = "SELECT comment.comment, comment.datecommented, login.username
FROM comment
LEFT JOIN login ON comment.loginid=login.loginid
WHERE submissionid=$submissionid
ORDER BY comment.datecommented ASC
LIMIT 100";
$result = mysql_query($sqlStr);
$arr = array();
echo "<table class=\"commentecho\">";
while ($row = mysql_fetch_array($result)) {
echo '<tr>';
echo '<td class="commentname1">'.stripslashes($row["comment"]).'</td>';
echo '</tr>';
echo '<tr>';
echo '<td class="commentname2">'.$row["username"].''.date('l, F j, Y &\nb\sp &\nb\sp g:i a &\nb\sp &\nb\sp \N\E\W &\nb\sp \Y\O\R\K &\nb\sp \T\I\M\E', strtotime($row["datecommented"])).'</td>';
echo '</tr>';
}
echo "</table>"

Answer 1

Showing relevant part of code, rest commented out so you immediately see what i added:
//echo "<table class=\"commentecho\">";
$count = 1; //<-start counter
//while ($row = mysql_fetch_array($result)) {
//echo '<tr>';
echo '<td>'.$counter++.'</td>'; //<-use numbering and increment afterwards
//echo '<td class="commentname1">'.stripslashes($row["comment"]).'</td>';
//echo '</tr>';
//..
}
//echo "</table>";