更改数组中的所有键

I want to replace all index keys in a array but i need to do it only with a function like array_map (not with a foreach) and that's why it's a little hard for me.

我想要替换数组中的所有索引键，但我只需要使用array_map(不是foreach)这样的函数，这就是为什么对我来说有点难。

Actual array :

真正的数组:

$array = [
    'mc_gross' => 10.17,
    'protection_eligibility' => 'Eligible',
    'address_status' => 'unconfirmed',
    'payer_id' => 'STTAC7UV2CVJ4'
];

Expected array :

将数组:

$array = [
    'McGross' => 10.17,
    'ProtectionEligibility' => 'Eligible',
    'AddressStatus' => 'unconfirmed',
    'PayerId' => 'STTAC7UV2CVJ4'
];

I have already a function to put the first letter in uppercase and remove all '_' :

我已经有一个函数将第一个字母大写，并删除所有的'_':

str_replace(
    "_",
    "",
    implode(
        '_',
        array_map(
            'ucfirst',
            explode(
                '_',
                ucwords(strtolower($key))
            )
        )
    )
);

I have tried with array_walk, but this function can't replace index key, only value... :

我尝试过array_walk，但是这个函数不能替换索引键，只能替换value…:

array_walk($array, function ($value, &$key) {
    $key = str_replace("_", "", implode('_', array_map('ucfirst', explode('_', ucwords(strtolower($key))))));
});

Thanks in advance for your help.

谢谢你的帮助。

1 个解决方案

#1

If you don't want to use a foreach, you can use a combination of array_keys, array_map, and array_combine to achieve this.

如果不想使用foreach，可以使用array_keys、array_map和array_combine的组合来实现这一点。

$array = array(
    'mc_gross' => 10.17,
    'protection_eligibility' => 'Eligible',
    'address_status' => 'unconfirmed',
    'payer_id' => 'STTAC7UV2CVJ4'
);

//Get keys
$keys = array_keys($array);

//Format keys
function map($key){
    return str_replace(' ', '', ucwords(str_replace('_', ' ', $key)));
}

//Map keys to format function
$keys = array_map('map', $keys);

//Use array_combine to map formatted keys to array values
$array = array_combine($keys,$array);

var_dump($array);

This should output something like:

这应该输出如下内容:

array(4){
    ["McGross"]=>float(10.17)
    ["ProtectionEligibility"]=>string(8) "Eligible"
    ["AddressStatus"]=>string(11) "unconfirmed"
    ["PayerId"]=>string(13) "STTAC7UV2CVJ4"
}

Relative docs:

#1