我有以下JSON格式的数据。
$strTree = '{"id":"1","children":[{"id":"316","children":[{"id":"336","children":[{"id":"423"}]},{"id":"337","children":[{"id":"418"}]},{"id":"420"}]},{"id":"405"},{"id":"421"}]}';
现在我必须使用此数据来构建新的数组,以识别报告管理器
$strTree = [
'316' => '1',
'405' => '1',
'421' => '1',
'336' => '316',
'337' => '316',
'420' => '316',
'418' => '337',
'423' => '336',
]
这是我尝试过的方法,但没有找到解决方案以得到预期的结果
$strTree = '{
"id": "1",
"children": [{
"id": "316",
"children": [{
"id": "336",
"children": [{"id": "423"}]
},
{
"id": "337",
"children": [{"id": "418"}]
}, {"id": "420"}
]
},
{"id": "405"},
{"id": "421"}
]}';
$arr = (array) json_decode($strTree);
$arrHierarchicalEmpDetails = buildResultedArray($arr, 1);
function buildResultedArray( $elements, $parentId = 0) {
$branch = [];
$elements = (array) $elements;
foreach ($elements as $element) {
$element = (array) $element;
$intID = $element['id'];
$branch[ $intID ] = $parentId;
if (!empty( $element['children'])) {
buildTree( $element['children'], $element['id']);
}
}
return $branch;
}
echo '<pre>'; print_r($arrHierarchicalEmpDetails);
答案 0 :(得分:1)
Gerber,要解决此问题,您可以使用递归函数“展平”层次结构数组:
function flattenHierarchicalArray($inputArray, $parentId = null)
{
$flattenedData = [];
if (!empty($inputArray['children'])) {
foreach ($inputArray['children'] as $child) {
$flattenedData += flattenHierarchicalArray($child, $inputArray['id']);
}
}
if (!is_null($parentId)) {
$flattenedData[$inputArray['id']] = $parentId;
}
return $flattenedData;
}
您应该以这种方式调用该函数:
flattenHierarchicalArray($data)
其中$ data是从JSON示例解码得到的分层数组。输出:
array(8) {
[423]=>
string(3) "336"
[336]=>
string(3) "316"
[418]=>
string(3) "337"
[337]=>
string(3) "316"
[420]=>
string(3) "316"
[316]=>
string(1) "1"
[405]=>
string(1) "1"
[421]=>
string(1) "1"
}
注意:此函数不会保持预期输出的顺序,我假设这根本不重要。