php – 递归搜索并删除数组？
发布时间：2020-12-13 16:17:50 所属栏目：PHP教程 来源：网络整理
导读：我正在使用多维数组,我希望能够删除与id匹配的数组(和所有子项). 我试过的功能是： function removeKey($key,$array,$childKey = 'children'){ if(isset($array[$key])){ unset($array[$key]); return $array; } foreach($array as $item) if(isset($item[$c
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我正在使用多维数组,我希望能够删除与id匹配的数组(和所有子项).
我试过的功能是： function removeKey($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 $array;
}
我的示例数组是： Array
(
[5] => Array
(
[id] => 5
[parent_id] =>
[menu_title] => Drinks
[page_title] => Drinks
[status] => 1
[products] => 0
)
[1] => Array
(
[id] => 1
[parent_id] =>
[menu_title] => Electronics
[page_title] => Electronics
[status] => 1
[products] => 0
[children] => Array
(
[2] => Array
(
[id] => 2
[parent_id] => 1
[menu_title] => Computers
[page_title] => Computers
[status] => 1
[products] => 0
[children] => Array
(
[4] => Array
(
[id] => 4
[parent_id] => 2
[menu_title] => Apple
[page_title] => Apple - Imacs and Macbooks
[status] => 1
[products] => 0
)
)
)
[3] => Array
(
[id] => 3
[parent_id] => 1
[menu_title] => Mobile Phones
[page_title] => Mobile Phones
[status] => 1
[products] => 0
)
)
)
)
我正在寻找的结果(用(2,’children’)调用函数)是： Array
(
[5] => Array
(
[id] => 5
[parent_id] =>
[menu_title] => Drinks
[page_title] => Drinks
[status] => 1
[products] => 0
)
[1] => Array
(
[id] => 1
[parent_id] =>
[menu_title] => Electronics
[page_title] => Electronics
[status] => 1
[products] => 0
[children] => Array
(
[3] => Array
(
[id] => 3
[parent_id] => 1
[menu_title] => Mobile Phones
[page_title] => Mobile Phones
[status] => 1
[products] => 0
)
)
)
)
但我得到的结果是 Array
(
[5] => Array
(
[id] => 5
[parent_id] =>
[menu_title] => Drinks
[page_title] => Drinks
[status] => 1
[products] => 0
)
[1] => Array
(
[3] => Array
(
[id] => 3
[parent_id] => 1
[menu_title] => Mobile Phones
[page_title] => Mobile Phones
[status] => 1
[products] => 0
)
)
)
我不知道这里发生了什么！ 解决方法
您只需使用引用即可轻松完成任务.
function removeKey($key,&$array,$childKey = 'children'){
if(isset($array[$key])){
unset($array[$key]);
return;
}
foreach($array as &$item)
if(isset($item[$childKey]))
removeKey($key,$childKey);
}
例： $arr = array(...);
removeKey('key',$arr,$chilKey);
// Just continue using $arr
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