help.php

   1 <?PHP /// $Id$
   2       /// help.php - prints a very simple page and includes a
   3       ///            page content or a string from elsewhere
   4       ///            Usually this will appear in a popup
   5       ///            See helpbutton() in lib/moodlelib.php
   6
   7     require_once("config.php");
   8
   9     optional_variable($file, "");
  10     optional_variable($text, "No text to display");
  11     optional_variable($module, "moodle");
  12
  13     print_header();
  14
  15     if (detect_munged_arguments("$module/$file")) {
  16         error("Filenames contain illegal characters!");
  17     }
  18
  19     $helpfound = false;
  20
  21     if (!empty($file)) {
  22         $langs = array(current_language(), get_string("parentlanguage"), "en");  // Fallback
  23         foreach ($langs as $lang) {
  24             if (empty($lang)) {
  25                 continue;
  26             }
  27             if ($module == "moodle") {
  28                 $filepath = "$CFG->dirroot/lang/$lang/help/$file";
  29             } else {
  30                 $filepath = "$CFG->dirroot/lang/$lang/help/$module/$file";
  31             }
  32
  33             if (file_exists("$filepath")) {
  34                 $helpfound = true;
  35                 include("$filepath");   // The actual helpfile
  36                 break;
  37             }
  38         }
  39     } else {
  40         echo "<p>";
  41         echo $text;
  42         echo "</p>";
  43         $helpfound = true;
  44     }
  45
  46     if (!$helpfound) {
  47         notify("Help file '$file' could not be found!");
  48     }
  49
  50     close_window_button();
  51
  52     echo "<center><p><a href=\"help.php?file=index.html\">".get_string("helpindex")."</a><p></center>";
  53 ?>
  54 </body>
  55 </html>
  56