PHP/XML/XML DOM Tree

Walking the Document Tree

   <source lang="html4strict">

<?php

    function walk_tree ($node, $depth = 0) {
         for ($i = 0, $indent = ""; $i < $depth; $i++)
              $indent .= "     ";
         if ($node->type == XML_ELEMENT_NODE) {
               print ($indent . $node->tagname . "\n");
               $kids = $node->children ();
               $nkids = count ($kids);
               if ($nkids > 0) {
                    $depth++;
                    for ($i = 0; $i < $nkids; $i++)
                         walk_tree ($kids[$i], $depth);
                    $depth--;
              }
         }
    }
    $doc = xmldocfile ("contact.xml");

print ("

\n");
     walk_tree ($doc->root ());
     print ("

\n");

?>

      </source>