...
$www['cmd'] = get_request('cmd','REQUEST');
$www['meth'] = get_request('meth','REQUEST');

ob_start();
$file = '';

switch ($www['cmd']) {
    case '_debug' :
        debug_dump($_REQUEST,1);
        break;

    default :
        if (defined('HOOKSDIR') && file_exists(HOOKSDIR.$www['cmd'].'.php'))
            $file = HOOKSDIR.$www['cmd'].'.php';

        elseif (defined('HTDOCDIR') && file_exists(HTDOCDIR.$www['cmd'].'.php'))
            $file = HTDOCDIR.$www['cmd'].'.php';

        elseif (file_exists('welcome.php'))
            $file = 'welcome.php';
}

if (DEBUG_ENABLED)
   debug_log('Ready to render page for command [%s,%s].',128,__FILE__,__LINE__,__METHOD__,$www['cmd'],$file);

# Create page.
$www['page'] = new page($ldapserver->server_id);

if ($file)
    include $file;
...