Php 按二维数组排序

我想根据字段年份对以下2D数组进行排序

Array
(

[0] => Array
(
    [from] => 44.91
    [to] => 53.56
    [next] => 108.88
    [year] => 2011

), 
[1] => Array
(
    [from] => 44.44
    [next] => 53.16
    [year] => 2010

), 
[2] => Array
(
    [from] => 42.83
    [next] => 51.36
    [year] => 2012
)
);

因此，预期结果将是：

Array
(
[1] => Array
(
    [from] => 44.44
    [next] => 53.16
    [year] => 2010

), 
[0] => Array
(
    [from] => 44.91
    [to] => 53.56
    [next] => 108.88
    [year] => 2011

),
[2] => Array
(
    [from] => 42.83
    [next] => 51.36
    [year] => 2012
)
);

你试过使用吗

功能cmp\u年（$a，$b）{
如果（$a['year']=$b['year']）返回0；
回报（$a['year']<$b['year']）？-1:1；
}
uasort（$your_array，'cmp_year'）；

您可以使用

---

如何对嵌套数组执行相同的操作，并且要排序的值位于该嵌套数组中—这不起作用

function cmp_year($a, $b) {
    if($a['year'] == $b['year']) return 0;
    return ($a['year'] < $b['year']) ? -1 : 1;
}

uasort($your_array, 'cmp_year');

foreach ($arr as $k => $v) {
  $years[$k] = $v['year'];
}

array_multisort($years, SORT_DESC, $arr);