使用字符串路径设置嵌套数组数据 [英] Using a string path to set nested array data

问题描述

我有我试图code一个不寻常的用例。的目标是：我想的顾客能够提供一个串，诸如：

I have an unusual use-case I'm trying to code for. The goal is this: I want the customer to be able to provide a string, such as:

"cars.honda.civic = On"

使用这个字符串，我的code将如下设置一个值：

Using this string, my code will set a value as follows:

$data['cars']['honda']['civic'] = 'On';

这是很容易来标记客户输入这样：

It's easy enough to tokenize the customer input as such:

$token = explode("=",$input);
$value = trim($token[1]);
$path = trim($token[0]);
$exploded_path = explode(".",$path);

但现在，我怎么使用$爆炸路径设置数组没有做一些讨厌像一个eval？

But now, how do I use $exploded path to set the array without doing something nasty like an eval?

推荐答案

使用引用操作符来获得连续的现有阵列：

Use the reference operator to get the successive existing arrays:

$temp = &$data;
foreach($exploded as $key) {
    $temp = &$temp[$key];
}
$temp = $value;
unset($temp);

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