> For the complete documentation index, see [llms.txt](https://minwork.gitbook.io/array/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://minwork.gitbook.io/array/common-methods/getkeysarray.md).

# getKeysArray

#### Definition

```php
Arr::getKeysArray(mixed $keys): array
```

#### Description

Transform variable into standardised array of keys.

This method filters out any values that cannot be used as array key leaving only not empty strings and integers as seen in the example below.

{% hint style="info" %}
All `$keys` arguments in other methods are normalized using this method
{% endhint %}

#### Examples

```php
Arr::getKeysArray(0) -> [0]

Arr::getKeysArray(null) -> []

Arr::getKeysArray('key') -> ['key']

Arr::getKeysArray('key1.0.key2.1') -> ['key1', '0', 'key2', '1']

Arr::getKeysArray([null, 'key1', '', 'key2', 3.1415, 0]) -> ['key1', 'key2', 0]
```