Export-Möglichkeit von (einzelnen) User-Profilen bzw Stamm-Daten?

PHP-Code:
// user-export
if($mybb->input['action'] == "export_user")
{
    $page->add_breadcrumb_item("Benuter-Export Vorschau");
    $page->output_header("Benuter-Export");

    $sub_tabs['export_user'] = array(
        'title' => "Benuter-Export",
        'link' => "index.php?module=user-users&amp;action=export_user&amp;uid={$mybb->input['uid']}",
        'description' => "Hier eine Zusammenstellung aller erforderlichen Benutzerdaten für den Export."
    );

    $page->output_nav_tabs($sub_tabs, 'export_user');

    $query = $db->simple_select("users", "*", "uid='{$mybb->input['uid']}'", array('limit' => 1));
    $user = $db->fetch_array($query);
    
    $user['username'] = htmlspecialchars_uni($user['username']);
    $username = htmlspecialchars_uni($user['username']);
    // Log admin action
    log_admin_action($user['uid'], htmlspecialchars_uni($user['username']));

    $table = new Table;

    $table->construct_header("Benutzer-Daten", array('colspan' => '2'));
    
    $table->construct_cell("<strong>Benutzername:</strong> ", array('width' =>'200'));
    $table->construct_cell($user['username']);
    $table->construct_row();
    
    if(empty($user['website']))
    {
        $user['website'] = $lang->unknown;
    }
    else
    {
        $user['website'] = htmlspecialchars_uni($user['website']);

    }
    $table->construct_cell("<strong>Webseite:</strong> ", array('width' =>'200'));
    $table->construct_cell($user['website']);
    $table->construct_row();
    
    if(empty($user['email']))
    {
        $user['email'] = $lang->unknown;
    }
    else
    {
        $user['email'] = htmlspecialchars_uni($user['email']);

    }
    $table->construct_cell("<strong>E-Mail:</strong> ", array('width' =>'200'));
    $table->construct_cell($user['email']);
    $table->construct_row();
    
    if(empty($user['icq']))
    {
        $user['icq'] = $lang->unknown;
    }
    else
    {
        $user['icq'] = htmlspecialchars_uni($user['icq']);

    }
    $table->construct_cell("<strong>ICQ-Nummer:</strong> ", array('width' =>'200'));
    $table->construct_cell($user['icq']);
    $table->construct_row();
    
    if(empty($user['aim']))
    {
        $user['aim'] = $lang->unknown;
    }
    else
    {
        $user['aim'] = htmlspecialchars_uni($user['aim']);

    }
    $table->construct_cell("<strong>AIM-ID:</strong> ", array('width' =>'200'));
    $table->construct_cell($user['aim']);
    $table->construct_row();
    
    if(empty($user['yahoo']))
    {
        $user['yahoo'] = $lang->unknown;
    }
    else
    {
        $user['yahoo'] = htmlspecialchars_uni($user['yahoo']);

    }
    $table->construct_cell("<strong>Yahoo-ID:</strong> ", array('width' =>'200'));
    $table->construct_cell($user['yahoo']);
    $table->construct_row();
    
    if(empty($user['skype']))
    {
        $user['skype'] = $lang->unknown;
    }
    else
    {
        $user['skype'] = htmlspecialchars_uni($user['skype']);

    }
    $table->construct_cell("<strong>Skype-ID:</strong> ", array('width' =>'200'));
    $table->construct_cell($user['skype']);
    $table->construct_row();
    
    if(empty($user['google']))
    {
        $user['google'] = $lang->unknown;
    }
    else
    {
        $user['google'] = htmlspecialchars_uni($user['google']);

    }
    $table->construct_cell("<strong>Google-Hangouts-ID:</strong> ", array('width' =>'200'));
    $table->construct_cell($user['google']);
    $table->construct_row();

    $user['lastip'] = my_inet_ntop($db->unescape_binary($user['lastip']));

    
    $table->construct_cell("<strong>{$lang->last_known_ip}:</strong> ", array('width' =>'200'));
    $table->construct_cell($user['lastip']);
    $table->construct_row();

    if(empty($user['regip']))
    {
        $user['regip'] = $lang->unknown;
    }
    else
    {
        $user['regip'] = my_inet_ntop($db->unescape_binary($user['regip']));

    }
    $table->construct_cell("<strong>{$lang->registration_ip}:</strong> ", array('width' =>'200'));
    $table->construct_cell($user['regip']);
    $table->construct_row();
    
    $table->construct_cell("<strong>Diese Daten als txt downloaden:</strong><br />(Rechtsklick->Speichern unter)", array('width' =>'200'));
    $filename = $user['username'].".txt";
    $user = array(
        "Benutzername: ".$user['username'],
        "Webseite: ".$user['website'],
        "Email: ".$user['email'],
        "ICQ-ID: ".$user['icq'],
        "AIM-ID: ".$user['aim'],
        "Yahoo-ID: ".$user['yahoo'],
        "Skype-ID: ".$user['skype'],
        "Google-Hangouts-ID: ".$user['google'],
        "Registrierungs-IP: ".$user['regip'],
        "Letzte bekannte IP: ".$user['lastip']
    );

    $fp = fopen("userdaten/".$filename,"w+");
    // mit "w+" wird die datei immer wieder überschrieben
    foreach($user as $values) fputs($fp, $values."\n");
    #fwrite($fp,"$user");
    fclose($fp);
    $table->construct_cell("<a href=\"userdaten/{$filename}\" title=\"\">Datei downloaden</a>");
    $table->construct_row();

    $table->output("Benutzer-Daten von ".$username);

    $page->output_footer();
}
// user-export ende