[Stack-cvs] stack-1-0 mei.php,NONE,1.1

[Chris S. <san...@us...>]

Update of /cvsroot/stack/stack-1-0
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv8318

Added Files:
	mei.php 
Log Message:


--- NEW FILE: mei.php ---
<?php 
/**
*
* Welcome to STACK.  A system for teaching and assessment using a 
* computer algebra kernel.
* <br>
* This file is licensed under the GPL License.
* <br>
* Copyright (c) 2005, Christopher James Sangwin
*
* @author Chris Sangwin       C.J...@bh...
*
* @package Stack
*/
session_start();
require_once('stackConfig.php');
require_once('stackLib.php');

/**
* To use this script, add a variable $choosequiz_store
* to stackConfig.php which is an array of the subjectID numbers
* of subjects you wish to be available through this page.
*
* eg  $choosequiz_store = array('1','2');
* where 1 & 2 are the subjectID numbers you wish to release.
*
* You also need to add a variable $choosequiz_auth to stackConf.php 
* This is used by VISTA to authorise the page.
*/

$user = stack_user_guest();

if (array_key_exists('username',$_GET)) {
  $username = strtolower($_GET['username']);
  $userID   = strtolower($_GET['userID']);

  $user = stack_user_login_vista($username,$userID);
  $_SESSION['user'] = $user;
}

if (array_key_exists('subjectID',$_GET)) {

    // Check this is permitted.
    if (isset($MEI_subjects)) {
       if (FALSE !== array_search($_GET['subjectID'],$MEI_subjects)) {
           $subjectID = $_GET['subjectID'];
       } else {
           echo "This subject is not available through this page.";
           die();
       }
    } else {
      echo "The administrator of this STACK server has not released any subjects.";
      die();
    }

    $subject             = stack_db_subject_get($subjectID,FALSE);
    $_SESSION['subject'] = $subject;
} else if (array_key_exists('subject',$_SESSION)) {
    $subject   = $_SESSION['subject'];
    $subjectID = $subject['subjectID']; 
} else {
    echo "You need to supply details of a STACK subjectID number.";
    die();
}


echo "<table width='100%'>\n<tr>\n  <td align='left'><h1>STACK quizzes</h1></td>\n";
echo "  <td align='right'><img src='pics/logo.png' alt='STACK logo' /></td>\n</tr>\n</table>";

echo $subject['subjectHTMLHead'];
$quiz_store = stack_db_subject_quiz_list_student($subjectID);
stack_quiz_student_select($subjectID,$quiz_store, $user, FALSE, "choosequiz.php");
echo $subject['subjectHTMLFoot'];