<?php
function printMenu ($pages)
{
   echo '<ul>';
   foreach ($pages as $page)
   {
      printf('<li><a href="page.php?id=%d">%s</a>',
             $page['id'],
             $page['name']);
      if (is_array($page['childs']) && (count($page['childs'] > 0))
         printMenu($page['childs']);
      echo '<\li>';
   }
   echo '<\ul>';
}