Как да взема потребитгелското име при phpbb3 ?

<?php
if ($user->data['user_id'] == ANONYMOUS)
{
echo"
<form action=\"". append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=login', true, $user->session_id) . "\" method=\"post\">
<input type=\"hidden\" name=\redirect\" value=\"../index.php\" />
<img border=\"0\" src=\"http://lov4e.net/images/user.jpg\" width=\"24\" height=\"22\">
<input type=\"text\" name=\"username\" size=\"18\" maxlength=\"25\" style=\"border: 1px solid #FF99FF; background-color: #FFE6F2\">
<img border=\"0\" src=\"http://lov4e.net/images/pass.jpg\" width=\"24\" height=\"22\">
<input type=\"password\" name=\"password\" size=\"18\" maxlength=\"25\" style=\"border: 1px solid #FF99FF; background-color: #FFE6F2\">
Запомни ме: <input type=\"checkbox\" name=\"autologin\" checked > 
<br>
Скрит <input type=\"checkbox\" class=\"radio\" name=\"viewonline\" />
<br>
<input type=\"hidden\" name=\"autologin\" value=\"1\" />
<input type=\"image\" src=\"images/vhod.jpg\" value=\"Влез\" name=\"login\" />
<input type=\"hidden\" name=\"redirect\" value=\"../index.php\" />
</form>


";
}


else
{

include("forum/includes/functions_display.php");
echo "<center><img src=\"forum/download/file.php?avatar=".$user->data['user_avatar']."\" alt=\"Твоят аватар\"/></center>
";

$level = $user->data['group_id'];
$level = str_replace("1", "Анонимен", "$level");
$level = str_replace("2", "Потребител", "$level");
$level = str_replace("4", "Модератор", "$level");
$level = str_replace("5", "<font color=red>Администратор</font>", "$level");
echo "<center>$level</center>";

echo "<br><a class=\"linkprofil\" href=# >Профил</a>";



$privmsg = $user->data['user_unread_privmsg'];
if ($privmsg == 0)
{
$msg = "";
}
else
{
$msg = "($privmsg)";
}

echo "<br> Лични съобщения <strong>$msg</strong>";
echo"
<form action=\"". append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=logout', true, $user->session_id) . "\" method=\"post\">
<input type=\"hidden\" name=\"mode\" value=\"logout\" />
<input type=\"image\" src=\"images/exit.jpg\" value=\"Излез\" name=\"logout\" />
</form>
";


}

?>

<?php
echo $user->data['username'];
?>