替换PHP数组的字符串键 [英] Replace string key of PHP array

问题描述

我在PHP中有一个看起来像这样的数组：

I have an array in PHP which looks like that:

$test = array('3' => 5);

如何替换字符串数组键3？
我尝试过：

How could I replace the stringed array key 3? I tried:

$test['3'] = "New value"

但它不起作用，之后看起来像这样：

but it don't work, it look like that after that:

array('3' => 5, 3 => "New value")

PHP版本：5.2.11

PHP version: 5.2.11

推荐答案

获取数字索引的最可能方法按字符串表示将具有数字属性名称的对象转换为数组时。

The most possible way you can get the numerical index represented by string is when you convert object with numeric property name to array.

对此进行了更详细的介绍此处

More detailed this covered here

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