lib/class.anonuser.php

   1 <?php
   2 // $Id$
   3
   4 /**
   5  * Anonymous user class
   6  *
   7  * This is used to represent a user that's not logged in.
   8  */
   9 class anonuser
  10 {
  11         public $userlinks = array(
  12                 'Log In' => '#login_u',
  13                 'Register' => 'register'
  14         );
  15
  16         protected $attrcache = array(
  17                 'alias'                         => '[nobody]',
  18                 'points'                        => 0,
  19                 'theme'                         => -1,
  20                 'topics_page'           => 15,
  21                 'msgs_page'                     => 10,
  22                 'sig'                           => ''
  23         );
  24
  25         protected $namecache;
  26
  27         function __get($varname)
  28         {
  29                 // Assign these three dynamically so they aren't included every page.
  30                 switch ( $varname ) {
  31                         case 'msglist_layout':
  32                                 $this->attrcache['msglist_layout'] = messagelist_flat::ID; break;
  33                         case 'topiclist_layout':
  34                                 $this->attrcache['topiclist_layout'] = topiclist_default::ID; break;
  35                         case 'boardlist_layout':
  36                                 $this->attrcache['boardlist_layout'] = boardlist_default::ID; break;
  37                 }
  38                 if ( array_key_exists($varname, $this->attrcache) ) {
  39                         return $this->attrcache[$varname];
  40                 } else
  41                         throw new OutOfBoundsException('Error in user->__get('.$varname.'): attribute not available.');
  42         }
  43
  44         /**
  45          * Prints the list of user links at the top of each page.
  46          */
  47         public function userheader()
  48         {
  49                 global $page;
  50                 if ( ! ($page->headers & page::Pageheader) )
  51                         $page->pageheader();
  52
  53                 if ( ! ($page->headers & page::Userheader) ) {
  54                         echo '<ul id="userheader" class="nl">',"\n";
  55                         foreach ( $this->userlinks as $text => $href )
  56                                 echo '  <li><a href="',$href,'">',$text,"</a></li>\n";
  57                         echo "</ul>\n";
  58
  59                         $page->headers |= page::Userheader;
  60                 }
  61         }
  62
  63         /**
  64          * Return a username given the corresponding user ID
  65          *
  66          * @param int    $id   User ID of username to look up
  67          * @param string $name Associate the given ID with this name instead of querying the DB
  68          */
  69         public function namelink($id, $name = null)
  70         {
  71                 global $DB;
  72
  73                 if ( empty($this->namecache[$id]) ) {
  74                         if ( $name === null )
  75                                 list($name) = $DB->query('SELECT `alias` FROM `users` WHERE `userid` = '.$id)->fetch_row();
  76
  77                         return ($this->namecache[$id] = $name);
  78                 } else
  79                         return $this->namecache[$id];
  80         }
  81
  82         /**
  83          * Takes a list of usernames and IDs from the DB and returns it as an array.
  84          * This also adds the ID:name pairs to the authuser object's namecache, so namelink() can reuse them.
  85          *
  86          * @param mysqli_result $rows A result set of 1 or more rows consisting of user ID and name.
  87          */
  88         public function fillnamecache(mysqli_result $rows)
  89         {
  90                 while ( list($a, $b) = $rows->fetch_row() )
  91                         $this->namecache[$a] = $c[$a] = $b;
  92                 return $c;
  93         }
  94
  95         /**
  96          * Turn a Unix timestamp into a human-readable date.
  97          * Outputs UTC time in ISO-8601 format.
  98          */
  99         public function fdate($timestamp)
 100         {
 101                 return ( $timestamp == 0 ? 'N/A' : gmdate('Y-m-d H:i:s', $timestamp) );
 102         }
 103 }
 104 ?>