A
Anonymous
Guest
Code:
<?php
class Tree
{
var $host, $user, $pass, $db, $table, $dbconnection;
function set_db($host, $user, $pass, $db, $table)
{
$this->host = $host;
$this->user = $user;
$this->pass = $pass;
$this->db = $db;
$this->table = $table;
}
function get_parent($id)
{
$query = 'select parentid from '.$this->table .' where id = "'.$id.'" order by name asc';
$result = $this->query($query);
$myrow = mysql_fetch_array($result);
return $myrow['parentid'];
}
function is_root($id)
{
if($this->get_parent($id) == 0)
{
return 1;
}
else
{
return 0;
}
}
function get_children($id)
{
$query = "SELECT id, name FROM $this->table WHERE parentid = '$id' order by name asc";
$result = $this->query($query);
$count = 0;
while ($row = mysql_fetch_array($result))
{
$children[$count]["id"] = $row["id"];
$children[$count]["name"] = $row["name"];
$count++;
}
return $children;
}
function get_type($id)
{
if($this->get_children($id) )
{
return 1;
}
else
{
return 0;
}
}
function get_name($id)
{
$query = "SELECT name FROM $this->table WHERE id = '$id'";
$result = $this->query($query);
$row = mysql_fetch_row($result);
return $row[0];
}
function get_description($id)
{
$query = "SELECT description FROM $this->table WHERE id = '$id'";
$result = $this->query($query);
$row = mysql_fetch_row($result);
return $row[0];
}
function get_ancestors($id, $count = 0)
{
// get parent of this node
$parent = $this->get_parent($id);
// if not at the root, add to $ancestors[] array
if($parent)
{
$this->ancestors[$count]["id"] = $parent;
$this->ancestors[$count]["name"] = $this->get_name($parent);
// recurse to get the parent of this parent
$this->get_ancestors($this->ancestors[$count]["id"], $count+1);
// all done? at this stage the array contains a list in bottom-up order
// reverse the array and return
return array_reverse($this->ancestors);
}
}
function query($query)
{
if(!isset($this->dbconnection))
$this->dbconnection = mysql_connect($this->host, $this->user, $this->pass)
or die ("Cannot connect to database");
// run query
$ret = mysql_db_query($this->db, $query, $this->dbconnection)
or die ("Error in query: $query");
// return result identifier
return $ret;
}
function print_menu_tree($id = 0)
{
$result = $this->get_children($id);
echo "<ul>";
for ($x=0; $x<sizeof($result); $x++)
{
if($this->get_type($result[$x]["id"]))
echo $result[$x]["name"];
else
echo "<li>" . $result[$x]["name"] . "[" . $result[$x]["id"] . "]";
$this->print_menu_tree($result[$x]["id"]);
}
echo "</ul>";
}
}
?>here's a sample file
Code:
<?php
$obj = new Tree();
$obj->set_db($db_host,$db_user,$db_pass,$database,'geneology');
// print the entire tree
$obj->print_menu_tree(0);
?>