File Source for exercise

<?php // $Id: $
/**
* @copyright (c) 2001-2006 Universite catholique de Louvain (UCL)
*
* @license http://www.gnu.org/copyleft/gpl.html (GPL) GENERAL PUBLIC LICENSE
*
* @package dokeos.exercise
* @author claro team <cvs@claroline.net>
*/
require '../../inc/global.inc.php';
//SECURITY CHECK
if ( api_is_platform_admin() ) api_not_allowed();
//DECLARE NEEDED LIBRARIES
require_once api_get_path(LIBRARY_PATH) . 'fileManage.lib.php';
require_once api_get_path(LIBRARY_PATH) . 'fileUpload.lib.php';
require_once 'exercise_import.inc.php';
include_once '../exercise.class.php';
include_once '../question.class.php';
include_once 'qti/qti_classes.php';
//SQL table name
$tbl_exercise = Database::get_course_table(TABLE_QUIZ_TEST);
$tbl_question = Database::get_course_table(TABLE_QUIZ_QUESTION);
$tbl_rel_exercise_question = Database::get_course_table(TABLE_QUIZ_TEST_QUESTION);
// tool libraries
include_once '../exercise.class.php';
//Tool title
$nameTools = get_lang('ImportExercise');
//bredcrump
$interbredcrump[]= array ('url' => '../exercise.php','name' => get_lang('Exercises'));
//----------------------------------
// EXECUTE COMMAND
//----------------------------------
$cmd = (isset($_REQUEST['cmd'])? $_REQUEST['cmd'] : 'show_import');
switch ( $cmd )
{
case 'show_import' :
{
$display = '<p>'
. get_lang('Imported exercises must consist of a zip or an XML file (IMS-QTI) and be compatible with your Claroline version.') . '<br>'
. '</p>'
. '<form enctype="multipart/form-data" action="" method="post">'
. '<input name="cmd" type="hidden" value="import" />'
. '<input name="uploadedExercise" type="file" /><br><br>'
. get_lang('Import exercise') . ' : '
. '<input value="' . get_lang('Ok') . '" type="submit" /> '
. claro_html_button( $_SERVER['PHP_SELF'], get_lang('Cancel'))
. '<br><br>'
. '<small>' . get_lang('Max file size') . ' : 2 MB</small>'
. '</form>';
}
break;
case 'import' :
{
//include needed librabries for treatment
$result_log = import_exercise($_FILES['uploadedExercise']['name']);
//display the result message (fail or success)
$dialogBox = '';
foreach ($result_log as $log)
{
$dialogBox .= $log . '<br>';
}
}
break;
}
//----------------------------------
// FIND INFORMATION
//----------------------------------
//empty!
//----------------------------------
// DISPLAY
//----------------------------------
include api_get_path(INCLUDE_PATH) . '/header.inc.php';
//display title
Display::display_introduction_section(TOOL_QUIZ);
//Display Forms or dialog box(if needed)
if ( isset($dialogBox) ) echo Display::display_normal_message($dialogBox,false);
//display content
if (isset($display) ) echo $display;
//footer display
include api_get_path(INCLUDE_PATH) . '/footer.inc.php';
?>

Source for file exercise_import.php