3

答案：{
                    if (is_array($value) && ! $delete)
                    {
                        foreach ($value as $suboption => $subvalue)
                        {
                            $this->{$option}["$suboption"] = $subvalue;
                        }
                    }
                    else
                    {
                          $this->$option = $value;
                    }
                }
            }
        }
    }

    // these are the functions, which are intended to be overriden in user classes

    /**
    *
    * @param    mixed
    * @return   object  DomNode
    * @access   private
    */
    function insertNewResult(&$metadata)
    {
        if ($this->xmlroot)
            return $this->xmlroot->new_child($this->tagNameResult, NULL);
        else
        {
            $this->xmlroot = $this->xmldoc->add_root($this->tagNameResult);
            //PHP 4.0.6 had $root->name as tagname, check for that here...
            if (!isset($this->xmlroot->{$this->tagname}))
            {
                $this->tagname = "name";
            }
            return $this->xmlroot;

        }
    }


    /**
    *   to be written
    *
    * @param    object DomNode $parent_row
    * @param    mixed $res
    * @param    mixed $key
    * @param    mixed &metadata
    * @return   object DomNode
    * @access private
    */
    function insertNewRow($parent_row, $res, $key, &$metadata)
    {
        return  $parent_row->new_child($this->tagNameRow, Null);
    }


    /**
    *   to be written
    *
    * @param    object DomNode $parent
    * @param    mixed $res
    * @param    mixed $key
    * @param    mixed &$metadata
    * @param    mixed &$subrow
    * @return   object DomNode
    * @access private
    */
    function insertNewElement($parent, $res, $key, &$metadata, &$subrow)
    {
        return  $parent->new_child($metadata[$key]["name"], $this->xml_encode(trim$res[$key]));
    }


    /**
    *   to be written
    *
    * @param    mixed $key
    * @param    mixed $value
    * @param    mixed &$metadata
    * @access private
    */
    function addTableInfo($key, $value, &$metadata) {

    }

    // end functions, which are intended to be overriden in user classes

    // here come some helper functions...

    /**
    * make utf8 out of the input data and escape & with & and "< " with "< "
    * (we assume that when there's no space after < it's a tag, which we need in the xml)
    *  I'm not sure, if this is the standard way, but it works for me.
    *
    * @param    string text to be utfed.
    * @access private
    */
    function xml_encode ($text)
    {
        if (function_exists("iconv") && isset($this->encoding_from) && isset($this->encoding_to))
        {
             ini_set("track_errors",1);
             $text = iconv($this->encoding_from,$this->encoding_to,ereg_replace("&","&",ereg_replace("< ","< ",$text)));

             if (! isset($text) )
             {
                if (isset($php_errormsg))
                {
                    $errormsg = "error: $php_errormsg&q

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