Form Validation "dot array"

If you have 'addresses[X][country] ' where 'X' is the index,
it seems the validation rule 'addresses.country' should be 'addresses.*.country'.

https://codeigniter.com/user_guide/libra...are-arrays

I understand what this is about.

PHP Code:

$data = [
    'addresses' => [
        ['country' => ''],
        ['country' => 'USA'],
        ['country' => ''],
    ]
];

$v = Services::validation();

$v->setRule('addresses.*.country', 'Address', 'required')->run($data);

// error 
// ['addresses.*.country' => "The Address field is required."] 


1. In fact, there are two errors, but one (the last) is displayed. Because the $field parameter is used for the error key.
2. It is impossible to determine which specific field the error applies to.

The error format should be like this

PHP Code:

$erros = [
    'addresses.0.country' => "The Address field is required.",
    'addresses.2.country' => "The Address field is required."
];
//or 
$erros = [
    'addresses' => [
            0 => ['country' => "The Address field is required."],
            2 => ['country' => "The Address field is required."],
    ]
]; 


I wanted to do a PR, but I think it will be tagged as BC.