sorry for that. actually i dont know how to explain this, im just putting up what ivd read... here is my script and pls just try to understand..... thank you.
<?
// functions for loading, contructing and
// displaying the tree
class treenode
{
// each node in the tree has member variables containing
// all the data for a post except the body of the message
var $m_postid;
var $m_title;
var $m_poster;
var $m_posted;
var $m_children;
var $m_childlist;
var $m_depth;
function treenode($postid, $title, $poster, $posted, $children,
$expand, $depth, $expanded, $sublist)
{
// sets up the member variables,
// and creates lower parts of the tree
$this->m_postid = $postid;
$this->m_title = $title;
$this->m_poster = $poster;
$this->m_posted = $posted;
$this->m_children =$children;
$this->m_childlist = array();
$this->m_depth = $depth;
// we only care what is below this node if it
// has children and is marked to be expanded
// sublists are always expanded
if(($sublist||$expand) && $children)
{
$conn = db_connect();
$query = "select * from header where parent = $postid order by posted";
$result = mysql_query($query);
for ($count=0; $row = @mysql_fetch_array($result); $count++)
{
if($sublist||$expanded[ $row[$postid] ] == true)
$expand = true;
else
$expand = false;
$this->m_childlist[$count]= new treenode($row['postid'],$row['title'],
$row['poster'],$row['posted'],
$row['children'], $expand,
$depth+1, $expanded, $sublist);
}
}
}
function display($row, $sublist = false)
{
// as this is an object, it is responsible for displaying itself
// $row tells us what row of the display we are up to
// so we know what color it should be
// $sublist tells us whether we are on the main page
// or the message page. Message pages should have
// $sublist = true.
// On a sublist, all messages are expanded and there are
// no "+" or "-" symbols.
// if this is the empty skip displaying
if($this->m_depth>-1)
{
//color alternate rows
echo "<tr><td bgcolor = ";
if ($row%2)
echo "'#cccccc'>";
else
echo "'#ffffff'>";
// indent replies to the depth of nesting
for($i = 0; $i<$this->m_depth; $i++)
{
echo "<img src = 'images/spacer.gif' height = 22
width = 22 alt = '' valign = bottom>";
}
// display + or - or a spacer
if ( !$sublist && $this->m_children && sizeof($this->m_childlist))
// we're on the main page, have some children, and they're expanded
{
// we are expanded - offer button to collapse
echo "<a href = 'lgbindex.php?collapse=".
$this->m_postid."#$this->m_postid'
><img src = 'images/minus.gif' valign = bottom
height = 22 width = 22 alt = 'Collapse Thread' border = 0></a>";
}
else if(!$sublist && $this->m_children)
{
// we are collapsed - offer button to expand
echo "<a href = 'lgbindex.php?expand=".
$this->m_postid."#$this->m_postid'><img src = 'images/plus.gif'
height = 22 width = 22 alt = 'Expand Thread' border = 0></a>";
}
else
{
// we have no children, or are in a sublist, do not give button
echo "<img src = 'images/spacer.gif' height = 22 width = 22
alt = ''valign = bottom>";
}
echo " <a name = $this->m_postid ><a href =
'lgbview_post.php?postid=$this->m_postid'>$this->m_title -
$this->m_poster - ".reformat_date($this->m_posted)."</a>";
echo "</td></tr>";
// increment row counter to alternate colors
$row++;
}
// call display on each of this node's children
// note a node will only have children in its list if expanded
$num_children = sizeof($this->m_childlist);
for($i = 0; $i<$num_children; $i++)
{
$row = $this->m_childlist[$i]->display($row, $sublist);
}
return $row;
}
};
?>
