[12.x] Add in_array_keys validation rule to check for presence of specified array keys

[stevebauman]

Description

This PR introduces a new validation rule called in_array_keys that validates whether an array contains at least one of the specified keys. It is named to follow the convention of existing rules (in_array and required_array_keys).

Purpose

While the required_array_keys rule exists which ensures all specified keys exist in an array, there is no built-in way to validate that an array has at least one of a given set of keys.

Usage

$validator = Validator::make($request->all(), [
    'config' => 'array|in_array_keys:api_key,access_token,oauth_token',
    'config.api_key' => 'nullable|string|min:32|max:64',
    'config.access_token' => 'nullable|string|min:40',
    'config.oauth_token' => 'nullable|string|starts_with:oauth_',
]);

Let me know if you'd like anything changed or adjusted! Thanks for your time 🙏

[shaedrich]

This PR introduces a new validation rule called in_array_keys that validates whether an array contains at least one of the specified keys. It is named to follow the convention of existing rules (in_array and required_array_keys).

Alternative possible naming:

• possible_array_keys
• allowed_array_keys