libs/XMLHandler.class.php

<?

// This class implements something similar to XPath. Since versions of PVP 
// pre 5.0 don't include XPath implementations

class XMLHandler{
  var $_tree;

  function XMLHandler($tree){
    $this->_tree = $tree;
  }

  function GetNodeByPath($path,$tree=false){
    if ($path == "")
      return null;
    else 
      $path = strtolower($path);

    if ($tree)
      $tree_to_search = $tree;
    else
      $tree_to_search = $this->_tree;

    $arrPath = explode('/',$path);
    if ($arrPath[0] == "" && count($arrPath) > 1)
      array_shift($arrPath);

    foreach($tree_to_search as $key => $val){
      if (gettype($val) == "array"){
        $nodename = strtolower($val[name]);
        if ($nodename == $arrPath[0]){ 
          if (count($arrPath) == 1)
            if (isset($val[content][child]))
              return $val[content][child];
            else
            return $val;
          array_shift($arrPath);
          $new_path = implode($arrPath,"/");

          return $this->GetNodeByPath($new_path,$val[child]);
        }
      }
    }
  }

}
?>