我怎么能强制PHP使用字符串数组钥匙？ [英] How can I force PHP to use strings for array keys?

问题描述

我遇到一个使用一个ID名称类型的数组，例如旧的应用程序...

I've come across an old app that uses an id to name type array, for example...

array(1) {
  [280]=>
  string(3) "abc"
}

现在，我需要重新排列这些和的var_dump（）将使其显示这是不会发生的，而钥匙是整数。

Now I need to reorder these, and a var_dump() would make it appear that that isn't going to happen while the keys are integers.

如果我增加一个 A 来各项指标，的var_dump（）将呈现围绕重点双引号，我想表明它现在是一个字符串...

If I add an a to every index, var_dump() will show double quotes around the key, my guess to show it is now a string...

array(1) {
  ["280a"]=>
  string(3) "abc"
}

这将让我轻松地重新排序，而无需接触更多code。

This would let me easily reorder them, without having to touch more code.

这确实无法正常工作

$newArray = array();
foreach($array as $key => $value) {
   $newArray[(string) $key] = $value;
}

A 的var_dump（）仍显示他们作为整数数组索引。

A var_dump() still shows them as integer array indexes.

有没有办法来强制键是字符串，这样我就可以重新排序，不会损坏阵列？

Is there a way to force the keys to be strings, so I can reorder them without ruining the array?

推荐答案

修改

我认为，如果他们是整数，我
  在不改变不能重新排序
  键（这是显著在此
  例）。然而，如果它们是
  串，我可以重新排列它们如何
  等作为指标不应
  除preTED有任何特殊
  含义。不管怎样，看到我的问题
  更新我做到了（我去了一个
  不同的路线）。

I assumed that if they are integers, I can't reorder them without changing the key (which is significant in this example). However, if they were strings, I can reorder them how they like as the index shouldn't be interpreted to have any special meaning. Anyway, see my question update for how I did it (I went down a different route).

其实他们没有要在数字顺序...

Actually they dont have to be in numeric order...

array(208=>'a', 0=> 'b', 99=>'c');

是完全有效的，如果您选择手动分配它们。虽然我同意整数键可能是因为PTED有人有一个连续的意义，尽管如果他们在一个非数字的顺序将是显而易见的，他们的werent你会觉得misinter $ P $。这就是说我想既然你有余地来改变code，你更新的是更好的方法。

Is perfectly valid if youre assigning them manually. Though i agree the integer keys might be misinterpreted as having a sequential meaning by someone although you would think if they were in a non-numeric order it would be evident they werent. That said i think since you had the leeway to change the code as you updated that is the better approach.

也许不是最有效的方式，但易如反掌：

Probably not the most efficient way but easy as pie:

$keys = array_keys($data);

$values = array_values($data);
$stringKeys = array_map($keys, 'strval');

$data = array_combine($stringKeys, $values);

//sort your data

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