具有数组结构的字符串到数组 [英] String with array structure to Array

问题描述

我有字符串:

Main.Sub.SubOfSub

还有一些数据，可能是一个字符串:

And some kind of data, may be a string:

SuperData

如何将其全部转换为上面的这个数组?

How I can transform it all to this array above?

Array
(
[Main] => Array
    (
        [Sub] => Array
            (
                [SubOfSub] => SuperData
            )

    )

)

感谢您的帮助，PK

推荐答案

给定值

$key = "Main.Sub.SubOfSub";
$target = array();
$value = "SuperData";

这里有一些代码可以满足您的需求¹:

Here's some code I have lying around that does what you need¹:

$path = explode('.', $key);
$root = &$target;

while(count($path) > 1) {
    $branch = array_shift($path);
    if (!isset($root[$branch])) {
        $root[$branch] = array();
    }

    $root = &$root[$branch];
}

$root[$path[0]] = $value;

查看实际操作.

¹ 实际上，它的作用远不止于此:它可以简单地封装在一个函数中，并且可以在所有三个输入值上进行配置(您可以传入一个具有现有值的数组，它会根据需要对其进行扩展).

¹ Actually it does slightly more than that: it can be trivially encapsulated inside a function, and it is configurable on all three input values (you can pass in an array with existing values, and it will expand it as necessary).

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