summarise php array into treeview - php

Question

Array
(
[00000000017] => Array
(
[00000000018] => Array
(
[00000000035] => I-0SAYHADW4JJA
[00000000038] => I-RF10EHE25KY0
[00000000039] => I-8MG3B1GT406F
)
[00000000019] => I-7GM4G5N3SDJL
)
[00000000025] => Array
(
[00000000011] => I-HT34P06WNMGJ
[00000000029] => I-U5KKT1H8J39W
)
[00000000040] => I-GX43V2WP9KPD
[00000000048] => I-XM526USFJAH9
[00000000052] => I-M414RK3H987U
[00000000055] => I-GABD4G13WHX7
)
I have the above array and i want to create a treeview display..
any recommendation ?
I guess i have to elaborate furthe on my question..
I want to store those array according to the level of array..
Example , I want something look like this :
[level_1]=> 00000000017,00000000025,00000000040, 00000000048, 00000000052
[level_2]=> 00000000018,00000000019, 00000000011, 00000000029
[level_3]=> 00000000035, 00000000038, 00000000039

Answer 1

You want a modified breadth-first search. This has the correct results for your sample structure:
<?php
function BFTraverse(&$tree = NULL, $depth = 0)
{
if (empty($tree))
return FALSE;
$keys = array_keys($tree);
$struct["lvl_$depth"] = $keys;
foreach ($keys as $key)
{
if (is_array($tree[$key]))
{
$struct = array_merge_recursive($struct, BFTraverse($tree[$key], $depth + 1));
}
}
return $struct;
}
$data = array
('00000000017' => array
(
'00000000018' => array
(
'00000000035' => 'I-0SAYHADW4JJA',
'00000000038' => 'I-RF10EHE25KY0',
'00000000039' => 'I-8MG3B1GT406F'
),
'00000000019' => 'I-7GM4G5N3SDJL'
),
'00000000025' => array
(
'00000000011' => 'I-HT34P06WNMGJ',
'00000000029' => 'I-U5KKT1H8J39W'
),
'00000000040' => 'I-GX43V2WP9KPD',
'00000000048' => 'I-XM526USFJAH9',
'00000000052' => 'I-M414RK3H987U',
'00000000055' => 'I-GABD4G13WHX7'
);
$var = BFTraverse($data);
$i = 0;
foreach ($var as $level)
echo "Level " . ++$i . ': ' . implode(', ', $level) . "\n";
?>
The output is:
Level 1: 00000000017, 00000000025, 00000000040, 00000000048, 00000000052, 00000000055
Level 2: 00000000018, 00000000019, 00000000011, 00000000029
Level 3: 00000000035, 00000000038, 00000000039
edit: Modified in the sense that you want the keys and not the node values.

Answer 2

I ran into the same problem recently and this article by Kevin van Zonneveld helped me out.
Basically you have to use a recursive function. Check out the article, it's what you need!