You can do it only in few lines of code with a recursive function... You
can display full tree structure with unlimited levels.
Mysql Table :
cid int,
parent int,
Name varchar
Cid parent varchar
1 0 A
2 1 C
3 0 B
4 1 D
5 2 E
6 3 F
This should output :
- A
- - C
- - - E
- - D
- B
- - F
function ShowTree($parent=0,$level=0){
$query=mysql_query("select cid,parent,name from categories where
parent='$parent'");
$level++;
while ($row=mysql_fetch_object($query) ){
$cnt=$row->cid;
$element[$cnt]['cid']=$row->cid;
$element[$cnt]['parent']=$row->parent;
$element[$cnt]['name']=$row->name;
echo str_repeat('-', $level) ."<B>".$element[$cnt]['name']."</B>
(level=$level)(counter=$cnt)<br>";
ShowTree($element[$cnt]['cid'],$level);
}
}
ShowTree(0,0);
> -----Original Message-----
> From: MindHunter [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, November 28, 2001 9:27 AM
> To: [EMAIL PROTECTED]
> Subject: [PHP] Hierarchies
>
>
> Hi,
>
> I need to display hierarchies (hierarchical structures). I
> have a MYSQL table with data like this:
>
> Node,Parent
> A,
> B,A
> C,A
> D,B
> E,B
> F,D
> G,A
>
> It can go down to 10 levels.
>
> I do not want display one level and then click to display the
> next, I want to see the entire tree at once, say like this:
>
> A
> ---B
> ------D
> ---------F
> ------E
> ---C
> ---G
>
> Any ideas, scripts on how I can do this? I seems like I have
> to use a recursive function and /or arrays?
>
> Any help will be appreciated!
>
> Thanks
> MH
>
>
>
>
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