_drawrating.php file in includes directory

[McMendo]

I've just realised that there is a file _drawrating.php in my includes/ directory, which I can't relate but which appears to be related to some rating system?

It is not in the default installation. Does anyone know what this file is?

PHP Code:

<?php
/*
Page:           _drawrating.php
Created:        Aug 2006
Last Mod:       Mar 18 2007
The function that draws the rating bar.
--------------------------------------------------------- 
ryan masuga, masugadesign.com
ryan@masugadesign.com 
Licensed under a Creative Commons Attribution 3.0 License.
http://creativecommons.org/licenses/by/3.0/
See readme.txt for full credit details.
--------------------------------------------------------- */
function rating_bar($id,$units='',$static='')
{
        global $vbulletin;
        $rating_unitwidth     = 30;
        require_once('./global.php');
        include_once './includes/krumo/class.krumo.php';

        //set some variables
        $userid = $vbulletin->userinfo['userid'];
        if (!$units) {$units = 10;}
        if (!$static) {$static = FALSE;}

        // get votes, values, ips for the current rating bar
        $query = $vbulletin->db->query_read("SELECT total_votes, total_value, userids FROM " . TABLE_PREFIX . "anymedia_rating WHERE id='$id' ")or die(" Error: ".mysql_error());


        // insert the id in the DB if it doesn't exist already
        // see: http://www.masugadesign.com/the-lab/scripts/unobtrusive-ajax-star-rating-bar/#comment-121
        if (mysql_num_rows($query) == 0) {
        $sql = "INSERT INTO " . TABLE_PREFIX . "anymedia_rating (`id`,`total_votes`, `total_value`, `userids`) VALUES ('$id', '0', '0', '')";
        $result = $vbulletin->db->query_read($sql);
        }

        $numbers=$vbulletin->db->fetch_array($query);


        if ($numbers['total_votes'] < 1) {
                $count = 0;
        } else {
                $count=$numbers['total_votes']; //how many votes total
        }
        $current_rating=$numbers['total_value']; //total number of rating added together and stored
        $tense=($count==1) ? "vote" : "votes"; //plural form votes/vote

        // determine whether the user has voted, so we know how to draw the ul/li
        $voted=mysql_num_rows($vbulletin->db->query_read("SELECT userids FROM " . TABLE_PREFIX . "anymedia_rating WHERE userids=$userid AND id=$id"));

        // now draw the rating bar
        $rating_width = @number_format($current_rating/$count,2)*$rating_unitwidth;
        $rating1 = @number_format($current_rating/$count,1);
        $rating2 = @number_format($current_rating/$count,2);

        krumo(array_keys(get_defined_vars()), $id, $units, $static, $vbulletin, $userid, $query, $numbers, $sql, $result, $rating1, $tense, $current_rating, $voted);

        if ($static == 'static') {

                        $static_rater = array();
                        $static_rater[] .= "\n".'<div class="ratingblock">';
                        $static_rater[] .= '<div id="unit_long'.$id.'">';
                        $static_rater[] .= '<ul id="unit_ul'.$id.'" class="unit-rating" style="width:'.$rating_unitwidth*$units.'px;">';
                        $static_rater[] .= '<li class="current-rating" style="width:'.$rating_width.'px;">Currently '.$rating2.'/'.$units.'</li>';
                        $static_rater[] .= '</ul>';
                        $static_rater[] .= '<p class="static">'.$id.'. Rating: <strong> '.$rating1.'</strong>/'.$units.' ('.$count.' '.$tense.' cast) <em>This is \'static\'.</em></p>';
                        $static_rater[] .= '</div>';
                        $static_rater[] .= '</div>'."\n\n";

                        return join("\n", $static_rater);


        } else {

              $rater ='';
              $rater.='<div class="ratingblock">';

              $rater.='<div id="unit_long'.$id.'">';
              $rater.='  <ul id="unit_ul'.$id.'" class="unit-rating" style="width:'.$rating_unitwidth*$units.'px;">';
              $rater.='     <li class="current-rating" style="width:'.$rating_width.'px;">Currently '.$rating2.'/'.$units.'</li>';

              for ($ncount = 1; $ncount <= $units; $ncount++) { // loop from 1 to the number of units
                   if(!$voted) { // if the user hasn't yet voted, draw the voting stars
                      $rater.='<li><a href="anymedia/db.php?j='.$ncount.'&amp;q='.$id.'&amp;t='.$userid.'&amp;c='.$units.'" title="'.$ncount.' out of '.$units.'" class="r'.$ncount.'-unit rater" rel="nofollow">'.$ncount.'</a></li>';
                   }
              }
              $ncount=0; // resets the count

              $rater.='  </ul>';
              $rater.='  <p';
              if($voted){ $rater.=' class="voted"'; }
              $rater.='>'.$id.' Rating: <strong> '.$rating1.'</strong>/'.$units.' ('.$count.' '.$tense.' cast)';
              $rater.='  </p>';
              $rater.='</div>';
              $rater.='</div>';
              return $rater;
         }
}
?>