我正在使用 PHP，并且我有以下数组，并且一直在尝试找出如何通过以下方式将其展平。这是一个使用 json_decode 从 JSON 创建的数组，最终结果将是另一个 json 文件。
因此，只要我们有唯一的名称，
patternTypetype当前数据结构。
[
'abc' => [
[
'foo' => '*',
'action' => 'Read',
'resource' => [
'name' => 'name_1',
'patternType' => 'fixed',
'type' => 'partition',
],
],
[
'foo' => '*',
'action' => 'Write',
'resource' => [
'name' => 'name_1',
'patternType' => 'fixed',
'type' => 'partition',
],
],
[
'foo' => '*',
'action' => 'Read',
'resource' => [
'name' => 'name_2',
'patternType' => 'fixed',
'type' => 'partition',
],
],
[
'foo' => '*',
'action' => 'Alter',
'resource' => [
'name' => 'name_2',
'patternType' => 'fixed',
'type' => 'partition',
],
],
],
];
所需的数据结构
Array
(
[abc] => Array
[0] => Array
(
[foo] => *
[action] => Array
(
[0] => Read
[1] => Write
)
[resource] => Array
(
[name] => name_1
[patternType] => fixed
[type] => partition
)
)
[1] => Array
(
[foo] => *
[action] => Array
(
[0] => Read
[1] => Alter
)
[resource] => Array
(
[name] => name_2
[patternType] => fixed
[type] => partition
)
)
)
我尝试过各种函数，如 array_merges、array_merge_recursive 等...我还尝试循环数组，创建辅助数组并在那里正确创建数据结构，但我总是遇到弄清楚如何引用在这种情况下，父数组，b/c 子数组的顺序总是可以不同。
要实现所需的数据结构，您可以循环原始数组并使用临时关联数组按 “name” 字段对元素进行分组。然后，您可以从此临时数组创建所需的结构。下面是执行此操作的 PHP 代码示例：
$inputArray = [
'abc' => [
[
'foo' => '*',
'action' => 'Read',
'resource' => [
'name' => 'name_1',
'patternType' => 'fixed',
'type' => 'partition',
],
],
[
'foo' => '*',
'action' => 'Write',
'resource' => [
'name' => 'name_1',
'patternType' => 'fixed',
'type' => 'partition',
],
],
[
'foo' => '*',
'action' => 'Read',
'resource' => [
'name' => 'name_2',
'patternType' => 'fixed',
'type' => 'partition',
],
],
[
'foo' => '*',
'action' => 'Alter',
'resource' => [
'name' => 'name_2',
'patternType' => 'fixed',
'type' => 'partition',
],
],
],
];
$outputArray = [];
foreach ($inputArray as $key => $items) {
$tempArray = [];
foreach ($items as $item) {
$name = $item['resource']['name'];
if (!isset($tempArray[$name])) {
$tempArray[$name] = [
'foo' => $item['foo'],
'action' => [],
'resource' => $item['resource'],
];
}
$tempArray[$name]['action'][] = $item['action'];
}
$outputArray[$key] = array_values($tempArray);
}
echo "<pre>";
print_r($outputArray);
这将为您提供所需的数据结构
$outputArray这是适合您的解决方案
<?php
$array = [
"abc" => [
[
"foo" => "*",
"action" => "Read",
"resource" => [
"name" => "name_1",
"patternType" => "fixed",
"type" => "partition"
]
],
[
"foo" => "*",
"action" => "Write",
"resource" => [
"name" => "name_1",
"patternType" => "fixed",
"type" => "partition"
]
],
[
"foo" => "*",
"action" => "Read",
"resource" => [
"name" => "name_2",
"patternType" => "fixed",
"type" => "partition"
]
],
[
"foo" => "*",
"action" => "Alter",
"resource" => [
"name" => "name_2",
"patternType" => "fixed",
"type" => "partition"
]
],
]
];
$grouparr = [];
$tempVal;
$action;
foreach ($array['abc'] as $key => $val) {
if ($val['resource']['name'] == @$tempVal['resource']['name']){
$grouparr[$key] = $val;
$actions = [$action];
array_push($actions, $grouparr[$key]['action']);
$grouparr[$key]['action'] = $actions;
} else {
$action = $val['action'];
$tempVal = $val;
}
}
print_r(array_values($grouparr));
?>
array_values()
清除不需要的键。这是更直接的方法。我认为“资源名称”是识别数据集唯一性的可靠方法。通过此标识符声明引用变量。
如果之前没有遇到过标识符，则将
action
值转换为单元素数组，定义引用变量的数据，然后推入结果数组。如果之前遇到过标识符，只需将新的
action值推入引用的
action子数组即可。代码：（
演示）
$result = [];
foreach ($array as $key => $sets) {
foreach ($sets as $set) {
$id = $set['resource']['name'];
if (!isset($ref[$id])) {
$set['action'] = (array) $set['action'];
$ref[$id] = $set;
$result[$key][] = &$ref[$id];
} else {
$ref[$id]['action'][] = $set['action'];
}
}
}
var_export($result);
action
值集合的
name子数组。代码：（
演示）
foreach ($array as $key => &$sets) {
foreach ($sets as $i => &$set) {
$id = $set['resource']['name'];
if (!isset($ref[$id])) {
$set['action'] = (array) $set['action'];
$ref[$id] = &$set['action'];
} else {
$ref[$id][] = $set['action'];
unset($array[$key][$i]);
}
}
}
var_export($array);