每第n个具有新键名的键将一维键值数组转换为二维键值数组

由 tvelit发布于 2020-04-09 07:02:26

我有一个看起来像这样的数组：

我需要将其翻译为：

Some things to know about the $startArray is that it is dynamic based on the amount of people submitted on a form. Each person always has just those three fields though (custom_12, custom_13, custom_14 aka fName, lName, email). So if there were 5 members, the 5th members fName would be the key custom_12-5 in the start array.

I've been looking around on stackoverflow for a question just like this and I was not able to find one. What would be the steps taken and possible array functions or anything else for creating the $endArray ?

siusto

2020-04-09 07:02:26

There's actually a builtin function for this: https://www.php.net/manual/en/function.array-chunk.php

For example, array_chunk($startArray, 3) will give you the base for your new array, you'll just need to then iterate through it and rename the keys.

另外，您可以自己遍历数组，然后根据当前迭代的索引将值添加到新数组中。

O老男人

2020-04-09 07:02:26

感谢查理的建议，我想到了这一点。

$startArray = array(
    'custom_12' => 'john',
    'custom_13' => 'johny',
    'custom_14' => 'john@johny.com',
    'custom_12-2' => 'bob',
    'custom_13-2' => 'bobby',
    'custom_14-2' => 'bob@bobby.com',
    'custom_12-3' => 'don',
    'custom_13-3' => 'donny',
    'custom_14-3' => 'don@donny.com'
);

$middleArray = array_chunk($startArray, 3);

$endArray = array_map(function($val) {
    return array(
        'fName' => $val[0],
        'lName' => $val[1],
        'email' => $val[2]
    ); 
}, $middleArray);

echo "<pre>";
    print_r($endArray);
echo "</pre>";

输出正是我想要的：

tvelit

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