我从SQL查询中得到一个名为$user_alerts的多维数组。为了供您参考，我在这里打印阵列：
Array
(
[154472] => Array
(
[3829802] => Array
(
[34438] => 34438
[34442] => 34442
[34429] => 34429
[34443] => 34443
)
[3830078] => Array
(
[34442] => 34442
[34438] => 34438
[34443] => 34443
[34429] => 34429
)
[3829803] => Array
(
[34442] => 34442
[34438] => 34438
[34429] => 34429
[34443] => 34443
)
)
[154554] => Array
(
[3831407] => Array
(
[34438] => 34438
[34429] => 34429
[34443] => 34443
[34442] => 34442
)
[3831408] => Array
(
[34429] => 34429
[34443] => 34443
[34442] => 34442
[34438] => 34438
)
)
[154551] => Array
(
[3831329] => Array
(
[34442] => 34442
[34438] => 34438
[34443] => 34443
[34429] => 34429
)
)
[154477] => Array
(
[3830046] => Array
(
[34442] => 34442
[34429] => 34429
[34438] => 34438
[34443] => 34443
)
[3829564] => Array
(
[34429] => 34429
[34442] => 34442
[34438] => 34438
[34443] => 34443
)
)
[154474] => Array
(
[3829402] => Array
(
[34429] => 34429
[34442] => 34442
[34438] => 34438
[34443] => 34443
)
)
[154473] => Array
(
[3829377] => Array
(
[34442] => 34442
[34429] => 34429
[34438] => 34438
[34443] => 34443
)
)
[154541] => Array
(
[3831211] => Array
(
[34442] => 34442
[34438] => 34438
[34443] => 34443
[34429] => 34429
)
)
[154514] => Array
(
[3830597] => Array
(
[34442] => 34442
[34438] => 34438
[34429] => 34429
[34443] => 34443
)
)
[154513] => Array
(
[3830557] => Array
(
[34442] => 34442
[34438] => 34438
[34429] => 34429
[34443] => 34443
)
)
[154493] => Array
(
[3830072] => Array
(
[34442] => 34442
[34429] => 34429
[34438] => 34438
[34443] => 34443
)
[3829611] => Array
(
[34429] => 34429
)
)
[154491] => Array
(
[3829998] => Array
(
[34429] => 34429
[34443] => 34443
[34442] => 34442
[34438] => 34438
)
)
)
现在我想按升序对内部数组进行排序。需要排序的样本内部数组如下（第一个内部数组元素）。
[3829802] => Array
(
[34438] => 34438
[34442] => 34442
[34429] => 34429
[34443] => 34443
)
实际上，我想对所有这样的内部数组进行排序。我尝试了很多技巧，但都没有达到预期的效果。有人能帮我解决这个问题吗？提前谢谢。
生成数组时是对其进行排序的最佳时机。构建数组时，只需调用ksort($array)。
如果出于任何原因，这都是不可行或不可能的，你可以在数组上循环并排序：
foreach($array as $key => $value){
foreach($value as $innerKey => $inner){
ksort($inner);
$array[$key][$innerKey] = $inner;
}
}