Something

<?phpfunction shortPath($from, $to){    $queue = array($from);    $active = 0;    $prev = array();        while ( count($queue) > 0 )    {        $active = array_shift($queue);         $dbresult = mysql_query("SELECT `ven` FROM `vennetabel` WHERE `bruger` = $active");         while ($enven = mysql_fetch_assoc($dbresult))        {            $enven = $enven['ven'];            if (!empty($prev[$enven]))                continue;             $prev[$enven] = $active;            array_push($queue,$enven);                        if ($enven == $to)                return backTrack($from, $to, $prev);         }    }    return "No path exists between $from and $to";}function backTrack($from, $to, $prev){    $output = array($to);    $active = $to;    while ($active != $from)    {        $active = $prev[$to];        array_unshift($output,$active);    }    return $output;}?>