<?php
require_once("Question.class.php");
class QuestionsFile
{
private $filename;
private $treeXML;
public function __construct($filename)
$this->filename = $filename;
$this->reload();
}
/**
* Load or reload the questions file.
* Unsave changes will be erased.
*/
private function reload()
$this->treeXML = new DOMDocument('1.0', 'UTF-8');
$this->treeXML->formatOutput = true;
if (isfile($this->filename))
$this->treeXML->load($this->filename);
$root_nodes = $this->treeXML->getElementsByTagName("questions");
if ($root_node->length > 0)
$this->root_node = $root_nodes->item(0);
else
throw Exception("Not a valid nemubot QuestionsFile.");
$this->root_node = $this->treeXML->createElement("questions");
$this->treeXML->appendChild($this->root_node);
* Add a new question into the file
* @param $question The question object
public function add_question($question)
$this->root_node->appendChild($question->to_xml($this->root_node));
* Get a question from its unique identifiant
public function get_question($id)
return new Question($this->root_node->getElementById($id));
* Write changes into the real file
public function save($newfilename = null)
if (!empty($newfilename))
$this->filename = $newfilename;
$this->treeXML->save($this->filename);
?>