递归搜索，并在数组中删除？ [英] Recursive search and remove in array?
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问题描述
我有一个多维数组工作，我希望能够删除一个数组（和所有儿童）匹配一个id其中。
I am working with a multidimensional array I want to be able to remove an array (and all children) which match an id.
我已经试过的功能是：
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 $array;
}
我的例子数组是：
My example array is:
Array
(
[5] => Array
(
[id] => 5
[parent_id] =>
[menu_title] => Drinks
[page_title] => Drinks
[status] => 1
[products] => 0
)
[1] => Array
(
[id] => 1
[parent_id] =>
[menu_title] => Electronics
[page_title] => Electronics
[status] => 1
[products] => 0
[children] => Array
(
[2] => Array
(
[id] => 2
[parent_id] => 1
[menu_title] => Computers
[page_title] => Computers
[status] => 1
[products] => 0
[children] => Array
(
[4] => Array
(
[id] => 4
[parent_id] => 2
[menu_title] => Apple
[page_title] => Apple - Imacs and Macbooks
[status] => 1
[products] => 0
)
)
)
[3] => Array
(
[id] => 3
[parent_id] => 1
[menu_title] => Mobile Phones
[page_title] => Mobile Phones
[status] => 1
[products] => 0
)
)
)
)
和我期待的结果（调用具有的功能（2，$阵列，'孩子'））是：
and the result I am looking for (calling the function with (2, $array, 'children')) is:
Array
(
[5] => Array
(
[id] => 5
[parent_id] =>
[menu_title] => Drinks
[page_title] => Drinks
[status] => 1
[products] => 0
)
[1] => Array
(
[id] => 1
[parent_id] =>
[menu_title] => Electronics
[page_title] => Electronics
[status] => 1
[products] => 0
[children] => Array
(
[3] => Array
(
[id] => 3
[parent_id] => 1
[menu_title] => Mobile Phones
[page_title] => Mobile Phones
[status] => 1
[products] => 0
)
)
)
)
但我得到的结果是
but the result I am getting is
Array
(
[5] => Array
(
[id] => 5
[parent_id] =>
[menu_title] => Drinks
[page_title] => Drinks
[status] => 1
[products] => 0
)
[1] => Array
(
[3] => Array
(
[id] => 3
[parent_id] => 1
[menu_title] => Mobile Phones
[page_title] => Mobile Phones
[status] => 1
[products] => 0
)
)
)
我不知道是怎么回事！
I have no idea what's going on here!
推荐答案
您可以只使用引用缓解的东西。
You can ease things by only using references.
function removeKey($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);
}
例如：
$arr = array(...);
removeKey('key', $arr, $chilKey);
// Just continue using $arr
这篇关于递归搜索，并在数组中删除？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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