PHP基于键取消设置数组值

Question

我有如下的多维数组，

[0] => Array
(
[data] => 
[id] => 0000
[name] => Swirl
[categories] => Array
(
[0] => Array
(
[id] => 0001
[name] => Whirl
[products] => Array 
(
[0] => Array
(
[id] => 0002
[filename] => 1.jpg
)
[1] => Array
(
[id] => 0003
[filename] => 2.jpg
)
)
)
)
)

我使用了以下功能来查找密钥。

function find_parent($array, $needle, $parent = null) {
foreach ($array as $key => $value) {
if (is_array($value)) {
$pass = $parent;
if (is_string($key)) {
$pass = $key;
}
$found = find_parent($value, $needle, $pass);
if ($found !== false) {
return $found;
}
} else if ($key === $needle) {
return $parent;
}
}
return false;
}
$parentkey = find_parent($array, 'id');

现在我需要取消设置products数组，并将其替换为另一个数组。

如何做到这一点。请帮忙。

谢谢，sarnitha

Answer 1

您可以在数组上使用递归函数：

function replaceInArray(array &$arr, $needleKey, array $replacement) {
foreach ($arr as $k => $v) {
if ($k === $needleKey) {
$arr[$k] = $replacement;
} else {
if (is_array($v)) {
replaceInArray($arr[$k], $needleKey, $replacement);
}
}
}
}
replaceInArray($sourceArr, 'products', ['id' => '0004', 'filename' => 'new.jpg']);
function replaceInArrayWithKey(array &$arr, $needleKey, array $replacementArray, $replacementKey) {
foreach ($arr as $k => $v) {
if ($k === $needleKey) {
$arr[$replacementKey] = $replacementArray;
unset($arr[$k]);
} else {
if (is_array($v)) {
replaceInArrayWithKey($arr[$k], $needleKey, $replacementArray, $replacementKey);
}
}
}
}
replaceInArrayWithKey($sourceArray, 'products', ['id' => '0004', 'filename' => 'new.jpg'], 'products_new');

您也可以尝试使用内置的递归迭代器-https://www.php.net/manual/en/class.recursivearrayiterator.php