<?php
$categories = array(
array(
'parent_id' => 0,
'categories_id' => 1,
),
array(
'parent_id' => 0,
'categories_id' => 2,
),
array(
'parent_id' => 1,
'categories_id' => 11,
),
array(
'parent_id' => 1,
'categories_id' => 111,
),
array(
'parent_id' => 2,
'categories_id' => 22,
),
);
$tree = array();
foreach ($categories as $category) {
$tree = &build($category, $tree);
}
// var_export($tree);
function &build($category, &$tree = array()) {
if ($category['parent_id'] == 0) {
$category = array(
$category['categories_id'] => $category,
);
$tree = array_merge($tree, $category);
return $tree;
}
foreach ($tree as $cate_id => $cate) {
var_dump($tree);
if ($category['parent_id'] == $cate_id) {
$tree[$cate_id]['childs'] = $category;
}
if (is_array($cate)) {
return build($cate, $tree);
}
}
return $tree;
}
- Output for 5.6.38, 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
- array(2) {
[0]=>
array(2) {
["parent_id"]=>
int(0)
["categories_id"]=>
int(1)
}
[1]=>
array(2) {
["parent_id"]=>
int(0)
["categories_id"]=>
int(2)
}
}
array(3) {
[0]=>
array(2) {
["parent_id"]=>
int(0)
["categories_id"]=>
int(1)
}
[1]=>
array(2) {
["parent_id"]=>
int(0)
["categories_id"]=>
int(2)
}
[2]=>
array(2) {
["parent_id"]=>
int(0)
["categories_id"]=>
int(1)
}
}
array(4) {
[0]=>
array(2) {
["parent_id"]=>
int(0)
["categories_id"]=>
int(1)
}
[1]=>
array(2) {
["parent_id"]=>
int(0)
["categories_id"]=>
int(2)
}
[2]=>
array(2) {
["parent_id"]=>
int(0)
["categories_id"]=>
int(1)
}
[3]=>
array(2) {
["parent_id"]=>
int(0)
["categories_id"]=>
int(1)
}
}
- Output for 8.3.5
- Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
array(2) {
[0]=>
array(2) {
["parent_id"]=>
int(0)
["categories_id"]=>
int(1)
}
[1]=>
array(2) {
["parent_id"]=>
int(0)
["categories_id"]=>
int(2)
}
}
array(3) {
[0]=>
array(2) {
["parent_id"]=>
int(0)
["categories_id"]=>
int(1)
}
[1]=>
array(2) {
["parent_id"]=>
int(0)
["categories_id"]=>
int(2)
}
[2]=>
array(2) {
["parent_id"]=>
int(0)
["categories_id"]=>
int(1)
}
}
array(4) {
[0]=>
array(2) {
["parent_id"]=>
int(0)
["categories_id"]=>
int(1)
}
[1]=>
array(2) {
["parent_id"]=>
int(0)
["categories_id"]=>
int(2)
}
[2]=>
array(2) {
["parent_id"]=>
int(0)
["categories_id"]=>
int(1)
}
[3]=>
array(2) {
["parent_id"]=>
int(0)
["categories_id"]=>
int(1)
}
}
preferences:
162.13 ms | 403 KiB | 180 Q