如何从另一个php数组创建php哈希数组？

我想得到这样的数组=>

Array
(
    [0] => Array
        (
            [Poll] => Array
                (
                    [id] => 1
                    [question] => What's your favourite linux distribution ?
                    [mark] => 1
                    [created] => 2011-09-05 20:30:57
                    [modified] => 2011-09-05 20:30:57
                )

        )

    [1] => Array
        (
            [Poll] => Array
                (
                    [id] => 2
                    [question] => What's your favourite editor ?
                    [mark] => 1
                    [created] => 2011-09-05 20:31:59
                    [modified] => 2011-09-05 20:31:59
                )

        )

)

有没有php函数可以实现这一点或任何快捷方式？

---

我知道foreach循环。

php数组中的每个键都必须是唯一的。因此，您不能有

array（“Poll”=>array（），“Poll”=>array（））。但是，您可以使用以下命令

            [Poll] => Array
                (
                    [id] => 1
                    [question] => What's your favourite linux distribution ?
                    [mark] => 1
                    [created] => 2011-09-05 20:30:57
                    [modified] => 2011-09-05 20:30:57
                )
            [Poll] => Array
                (
                    [id] => 2
                    [question] => What's your favourite editor ?
                    [mark] => 1
                    [created] => 2011-09-05 20:31:59
                    [modified] => 2011-09-05 20:31:59
                )

这将使
$r
成为如下数组：

$r = array_map(function($subArray) {
  return $subArray['Poll'];
}, $inputArray);

array(
  array(
    "id" => 1,
    "question" => "What's your favourite linux distribution ?",
    "mark" => 1,
    "created" => "2011-09-05 20:30:57",
    "modified" => "2011-09-05 20:30:57",
  ),
  array(
    "id" => 2,
    "question" => "What's your favourite editor ?",
    "mark" => 1,
    "created" => "2011-09-05 20:31:59",
    "modified" => "2011-09-05 20:31:59"
  )
);

您可以这样使用它：

$r = array_map(function($subArray) {
  return $subArray['Poll'];
}, $inputArray);

array(
  array(
    "id" => 1,
    "question" => "What's your favourite linux distribution ?",
    "mark" => 1,
    "created" => "2011-09-05 20:30:57",
    "modified" => "2011-09-05 20:30:57",
  ),
  array(
    "id" => 2,
    "question" => "What's your favourite editor ?",
    "mark" => 1,
    "created" => "2011-09-05 20:31:59",
    "modified" => "2011-09-05 20:31:59"
  )
);

顺便说一下，您不应该以文本格式存储时间，特别是不应该以没有时区规范的格式存储时间。相反，使用and返回的UNIX时间戳或对象。
（参考）现在我如何访问/获取'question'的值？