如何“变平"一个多维数组到 PHP 中的简单数组?

2022-01-30 00:00:00 arrays multidimensional-array php

这可能是初学者的问题，但我已经阅读了较长时间的文档，但找不到任何解决方案.我想我可以对每个维度使用 implode，然后将这些字符串与 str_split 重新组合在一起以创建新的简单数组.但是我永远不知道连接模式是否也在值中，所以在执行 str_split 之后，我的原始值可能会中断.

It's probably beginner question but I'm going through documentation for longer time already and I can't find any solution. I thought I could use implode for each dimension and then put those strings back together with str_split to make new simple array. However I never know if the join pattern isn't also in values and so after doing str_split my original values could break.

对于多维数组内部的数组，是否有类似 combine($array1, $array2) 的东西?

Is there something like combine($array1, $array2) for arrays inside of multi-dimensional array?

推荐答案

使用array_walk_recursive

<?php

$aNonFlat = array(
    1,
    2,
    array(
        3,
        4,
        5,
        array(
            6,
            7
        ),
        8,
        9,
    ),
    10,
    11
);

$objTmp = (object) array('aFlat' => array());

array_walk_recursive($aNonFlat, create_function('&$v, $k, &$t', '$t->aFlat[] = $v;'), $objTmp);

var_dump($objTmp->aFlat);

/*
array(11) {
  [0]=>
  int(1)
  [1]=>
  int(2)
  [2]=>
  int(3)
  [3]=>
  int(4)
  [4]=>
  int(5)
  [5]=>
  int(6)
  [6]=>
  int(7)
  [7]=>
  int(8)
  [8]=>
  int(9)
  [9]=>
  int(10)
  [10]=>
  int(11)
}
*/

?>

使用 PHP 5.5.9-1ubuntu4.24 (cli) 测试(构建时间:2018 年 3 月 16 日 12:32:06)

Tested with PHP 5.5.9-1ubuntu4.24 (cli) (built: Mar 16 2018 12:32:06)

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