Hi,
May this can help you:
<?php
// recusive tree function
//
function tree($id_parent = 0, $indent = 0)
{
global $g_tree, $ret_tree;
$tt = array();
$x = 0;
$loop = 0;
foreach($g_tree as $n)
{
if( $n['id_parent'] == $id_parent)
{
$tt[$x++] = $loop;
}
$loop++;
}
/*-- if there are some parent ids --*/
if( $x != 0){
foreach($tt as $d)
{
$tmp = array();
foreach($g_tree[$d] as $key => $value)
{
$tmp[$key] = $value;
}
$tmp['indent'] = $indent;
$ret_tree[] = $tmp;
tree($tmp['id'], $indent+1);
}
}
else
{
return 0;
}
}
// This is your tree structure. It should be sorted by titles
//
$g_tree = array();
$g_tree[] = array(
'id' => 1,
'id_parent' => 0,
'title' => 'Astronomy'
);
$g_tree[] = array(
'id' => 2,
'id_parent' => 1,
'title' => 'Radio-Astronomy'
);
$g_tree[] = array(
'id' => 3,
'id_parent' => 2,
'title' => 'Radio-Observatories'
);
$g_tree[] = array(
'id' => 4,
'id_parent' => 0,
'title' => 'Physics'
);
$g_tree[] = array(
'id' => 5,
'id_parent' => 4,
'title' => 'Lasers'
);
$g_tree[] = array(
'id' => 6,
'id_parent' => 4,
'title' => 'Photonics'
);
// This the the return array with indents
//
$ret_tree = array();
tree(0,0);
//Print the tree structure with indents
//
foreach($ret_tree as $cat)
{
$indent = '';
for($i=0;$i<$cat['indent'];$i++)
$indent .= '___';
echo $indent.$cat['title'].'<br>';
}
?>
It sould even work to print a subtree eg. tree(1,0)
atur
_______________________________________________
"Mike Klemin" <[EMAIL PROTECTED]> wrote
> Hello,
>
> If anyone have expamples of displaying tree structure.
>
> Say I have array $result[x][y] with folloowing data
>
> X Y["ID"] Y["OWNER"]
> 0 1 0
> 1 2 1
> 2 3 2
> 3 4 2
> 4 5 3
> 5 6 2
> 6 7 2
>
>
> So, I want it displayed like
>
> ID1
> ID2
> ID3
> ID5
> ID4
> ID6
> ID7
>
> ========================
>
> Please, help I tryed to do it with recursing but failed.
>
> There is a test function which shows that php doesnt support recursing
> well:-
>
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