// Bayesian Rating Calc
$theItem = $_GET[’id’];
if($theItem) {
// all items votes and ratings
$result = mysql_query(”SELECT AVG(item),AVG(vote) FROM itemvotes WHERE vote>’0′ GROUP BY item”) or die(mysql_error());
$row = mysql_fetch_row($result);
$avg_num_votes = $row[0];
$avg_rating = $row[1];

// this item votes and ratings
$result = mysql_query(”SELECT COUNT(item),AVG(vote) FROM itemvotes WHERE item=’$theItem’ AND vote>’0′”) or die(mysql_error());
$row2 = mysql_fetch_row($result);
$this_num_votes = $row2[0];
$this_rating = $row2[1];

if(!$row OR !$row2)
$br = “_”;
else
$br = number_format( ((($avg_num_votes * $avg_rating) + ($this_num_votes * $this_rating))/($avg_num_votes + $this_num_votes)), 1, ‘.’ );
} // end of if item selected