I am working with a multidimensional array I want to be able to remove an array (and all children) which match an id.
The function I have tried is:
function removeKey($key, $array, $childKey = 'children'){
if(isset($array[$key])){
unset($array[$key]);
return $array;
}
foreach($array as &$item)
if(isset($item[$childKey]))
$item = removeKey($key, $item[$childKey], $childKey);
return $array;
}
My example array is:
Array
(
[5] => Array
(
[id] => 5
[parent_id] =>
[menu_title] => Drinks
[page_title] => Drinks
[status] => 1
[products] => 0
)
[1] => Array
(
[id] => 1
[parent_id] =>
[menu_title] => Electronics
[page_title] => Electronics
[status] => 1
[products] => 0
[children] => Array
(
[2] => Array
(
[id] => 2
[parent_id] => 1
[menu_title] => Computers
[page_title] => Computers
[status] => 1
[products] => 0
[children] => Array
(
[4] => Array
(
[id] => 4
[parent_id] => 2
[menu_title] => Apple
[page_title] => Apple - Imacs and Macbooks
[status] => 1
[products] => 0
)
)
)
[3] => Array
(
[id] => 3
[parent_id] => 1
[menu_title] => Mobile Phones
[page_title] => Mobile Phones
[status] => 1
[products] => 0
)
)
)
)
and the result I am looking for (calling the function with (2, $array, 'children')) is:
Array
(
[5] => Array
(
[id] => 5
[parent_id] =>
[menu_title] => Drinks
[page_title] => Drinks
[status] => 1
[products] => 0
)
[1] => Array
(
[id] => 1
[parent_id] =>
[menu_title] => Electronics
[page_title] => Electronics
[status] => 1
[products] => 0
[children] => Array
(
[3] => Array
(
[id] => 3
[parent_id] => 1
[menu_title] => Mobile Phones
[page_title] => Mobile Phones
[status] => 1
[products] => 0
)
)
)
)
but the result I am getting is
Array
(
[5] => Array
(
[id] => 5
[parent_id] =>
[menu_title] => Drinks
[page_title] => Drinks
[status] => 1
[products] => 0
)
[1] => Array
(
[3] => Array
(
[id] => 3
[parent_id] => 1
[menu_title] => Mobile Phones
[page_title] => Mobile Phones
[status] => 1
[products] => 0
)
)
)
I have no idea what's going on here!
You can ease things by only using references.
function removeKey($key, &$array, $childKey = 'children'){
if(isset($array[$key])){
unset($array[$key]);
return;
}
foreach($array as &$item)
if(isset($item[$childKey]))
removeKey($key, $item[$childKey], $childKey);
}
Example:
$arr = array(...);
removeKey('key', $arr, $chilKey);
// Just continue using $arr