php - 关于数组重组
本文介绍了php - 关于数组重组的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
问 题
有这样一个数组:
[
1 => [ 'k' => 0 ],
2 => [ 'k' => 1 ],
3 => [ 'k' => 1 ],
4 => [ 'k' => 2 ],
5 => [ 'k' => 4 ],
6 => [ 'k' => 3 ],
7 => [ 'k' => 0 ],
8 => [ 'k' => 6 ]
]
根据数组中存的k的值,在数组中找自己的父级,然后把自己添加到父级的children下,数组重组成如下的结构:
[
1 => [
'k' => 0,
'children' => [
2 => [
'k' => 1,
'children' => [
4 => [
'k' => 2
'children' => [
5 => ['k' => 4]
]
]
]
],
3 => [
'k' => 1,
'children' => [
6 => [
'k' => 3,
'children' => [
8 => ['k' => 6]
]
]
]
]
],
7 => [ 'k' => 0 ]
]
解决方案
直接贴代码了
$array = [
1 => [ 'k' => 0 ],
2 => [ 'k' => 1 ],
3 => [ 'k' => 1 ],
4 => [ 'k' => 2 ],
5 => [ 'k' => 4 ],
6 => [ 'k' => 3 ],
7 => [ 'k' => 0 ],
8 => [ 'k' => 6 ]
];
$tree = [];
$refer = $array;
foreach($array as $key => $val) {
if (isset($refer[$val['k']])) {
$refer[$val['k']]['children'][$key] = &$refer[$key];
} else {
$tree[$key] = &$refer[$key];
}
}
print_r($tree);
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