xAuth - Registered Users List

<?php
// MySQL
$sqlhost = "localhost";
$sqluser = "SqlUsername";
$sqlpass = "changeme";
$sqldb = "databasename";
mysql_connect($sqlhost,$sqluser,$sqlpass) or die(mysql_error());
mysql_select_db($sqldb) or die(mysql_error());
// Actual Code.
$query = "SELECT playername FROM accounts";
$result = mysql_query($query) or die(mysql_error());
while($row = mysql_fetch_array($result)){
    $users .= "<tr><td><img width=\"16\" height=\"16\" src=\"http://s1.ilkotech.co.uk/treecraft/face.php?uid=".$row['playername']."\" /></td><td>".$row['playername']."</td>";
    $users .= "</tr>";
}
echo $users;
?>