<?php
$array = array(
55 => array(
'ident' => 'test 1',
'depth' => 1,
),
77 => array(
'parent_id' => 55,
'ident' => 'test 2',
'depth' => 2,
),
109 => array(
'parent_id' => 77,
'ident' => 'test 3',
'depth' => 3,
),
78 => array(
'parent_id' => 55,
'ident' => 'test 4',
'depth' => 2,
),
25 => array(
'ident' => 'test 5',
'depth' => 1,
)
);
function v1($array) {
foreach ($array as $key => &$sub) {
if (isset($sub['parent_id'])) {
$array[$sub['parent_id']]['children'][$key] = &$sub;
}
}
unset($sub); // unset the reference to make sure to not overwrite it later...
// now remove the entries with parents
foreach ($array as $key => $sub) {
if (isset($sub['parent_id']))
unset($array[$key]);
}
return $array;
}
function &find_by_key($key, $array) {
foreach($array as $k => &$v) {
if($key == $k) {
return $v;
}
}
foreach($array as $sub) {
if(isset($sub['children']) && FALSE !== ($found = &find_by_key($key, $sub['children']))) {
return $found;
}
}
return FALSE;
}
function v2($array) {
$out = array();
foreach ($array as $key => $sub) {
if(!isset($sub['parent_id'])) {
$out[$key] = $sub;
$out[$key]['children'] = array();
}
else {
//$parent = &find_by_key($sub['parent_id'], $out);
//$parent['children'] = array();
//$parent['children'][$key] = $sub;
}
}
return $out;
}
//var_dump(v1($array));
var_dump(v2($array));
- Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
- array(2) {
[55]=>
array(3) {
["ident"]=>
string(6) "test 1"
["depth"]=>
int(1)
["children"]=>
array(0) {
}
}
[25]=>
array(3) {
["ident"]=>
string(6) "test 5"
["depth"]=>
int(1)
["children"]=>
array(0) {
}
}
}
- Output for 4.4.2 - 4.4.9
- Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/6LRnF on line 30
Process exited with code 255. - Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
- Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /in/6LRnF on line 30
Process exited with code 255. - Output for 4.3.2 - 4.3.4
- Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/6LRnF on line 30
Process exited with code 255.
preferences:
285.9 ms | 401 KiB | 457 Q