首页 / PHP / 按父级排序的PHP数组
按父级排序的PHP数组
内容导读
互联网集市收集整理的这篇技术教程文章主要介绍了按父级排序的PHP数组，小编现在分享给大家，供广大互联网技能从业者学习和参考。文章包含3493字，纯文字阅读大概需要5分钟。
内容图文
我有一个要排序的复杂数组,它看起来像这样：
Array
(
[0] => Array
(
[id] => 1171409310
[parent] => 1171287657
[createdAt] => 2013-12-20T12:42:19
)
[1] => Array
(
[id] => 1171360372
[parent] => 1171313704
[createdAt] => 2013-12-20T11:18:46
)
[2] => Array
(
[id] => 1171313704
[parent] => 1171304353
[createdAt] => 2013-12-20T10:14:46
)
[3] => Array
(
[id] => 1171304353
[parent] => 1171287657
[createdAt] => 2013-12-20T09:55:34
)
[4] => Array
(
[id] => 1171303539
[parent] => 1171014482
[createdAt] => 2013-12-20T09:53:54
)
[5] => Array
(
[id] => 1171287657
[parent] => 1170597579
[createdAt] => 2013-12-20T09:29:34
)
[6] => Array
(
[id] => 1171264520
[parent] => 1169354287
[createdAt] => 2013-12-20T08:58:26
)
[7] => Array
(
[id] => 1171014482
[parent] =>
[createdAt] => 2013-12-20T02:51:24
)
[8] => Array
(
[id] => 1170700661
[parent] => 1170597579
[createdAt] => 2013-12-19T21:30:31
)
[9] => Array
(
[id] => 1170597579
[parent] =>
[createdAt] => 2013-12-19T20:22:40
)
[10] => Array
(
[id] => 1169362457
[parent] =>
[createdAt] => 2013-12-18T22:27:28
)
[11] => Array
(
[id] => 1169354287
[parent] =>
[createdAt] => 2013-12-18T22:20:08
)
[12] => Array
(
[id] => 1169315244
[parent] =>
[createdAt] => 2013-12-18T21:52:59
)
)
我希望数组首先按日期排序(最旧的在顶部),然后每个子节点在其父节点之后(最顶层的节点也是如此).问题是孩子也可能是有孩子的父母,因此有多个维度.如果可能,我还想添加尺寸.
我希望我的问题很明确.
编辑：我从disqus API获取数组,并希望它像在网站上一样排序.
编辑：它必须像这样结束：
Array
(
[12] => Array
(
[id] => 1169315244
[parent] =>
[createdAt] => 2013-12-18T21:52:59
)
[11] => Array
(
[id] => 1169354287
[parent] =>
[createdAt] => 2013-12-18T22:20:08
)
[6] => Array
(
[id] => 1171264520
[parent] => 1169354287
[createdAt] => 2013-12-20T08:58:26
)
[10] => Array
(
[id] => 1169362457
[parent] =>
[createdAt] => 2013-12-18T22:27:28
)
[9] => Array
(
[id] => 1170597579
[parent] =>
[createdAt] => 2013-12-19T20:22:40
)
[8] => Array
(
[id] => 1170700661
[parent] => 1170597579
[createdAt] => 2013-12-19T21:30:31
)
[5] => Array
(
[id] => 1171287657
[parent] => 1170597579
[createdAt] => 2013-12-20T09:29:34
)
[3] => Array
(
[id] => 1171304353
[parent] => 1171287657
[createdAt] => 2013-12-20T09:55:34
)
[2] => Array
(
[id] => 1171313704
[parent] => 1171304353
[createdAt] => 2013-12-20T10:14:46
)
[1] => Array
(
[id] => 1171360372
[parent] => 1171313704
[createdAt] => 2013-12-20T11:18:46
)
[0] => Array
(
[id] => 1171409310
[parent] => 1171287657
[createdAt] => 2013-12-20T12:42:19
)
[7] => Array
(
[id] => 1171014482
[parent] =>
[createdAt] => 2013-12-20T02:51:24
)
[4] => Array
(
[id] => 1171303539
[parent] => 1171014482
[createdAt] => 2013-12-20T09:53:54
)
)
解决方法:
uasort($array, function($a, $b) {
// sort by date first
if (@$a["createdAt"] == @$b["createdAt"]){
return 0;
}
return (@$a["createdAt"] > @$b["createdAt"]) ? 1 : -1;
});
$array_asc = array();
foreach($array as $key => $val){
// create an array with ids as keys and children
// with the assumption that parents are created earlier.
// store the original key
$array_asc[$val['id']] = array_merge($val, array('org_key' => $key));
if ($val['parent']){
$array_asc[$val['parent']]['children'][] = $val['id'];
}
}
$array_out = array();
// get a flat array again
foreach($array_asc as $val){
if ($val['parent']){
continue;
}
add_to_output($array_out, $val, $array_asc);
}
function add_to_output(&$array_out, $val, $array_asc){
$array_out[$val['org_key']] = $val;
if (sizeof($val['children'])){
foreach($val['children'] as $id){
add_to_output($array_out, $array_asc[$id], $array_asc);
}
}
unset($array_out[$val['org_key']]['children'], $array_out[$val['org_key']]['org_key']);
}
未经测试.
内容总结
以上是互联网集市为您收集整理的按父级排序的PHP数组全部内容，希望文章能够帮你解决按父级排序的PHP数组所遇到的程序开发问题。 如果觉得互联网集市技术教程内容还不错，欢迎将互联网集市网站推荐给程序员好友。
内容备注
版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 gblab@vip.qq.com 举报，一经查实，本站将立刻删除。
内容手机端
扫描二维码推送至手机访问。
来源：【匿名】