Editing a multidimensional array?

Question

Laravel

Good night everybody. The second day I struggle with the task.
There is a dynamic form
Fields are added dynamically, for clarity below I have indicated a diagram of a possible form

${id} - $cinema->id
<form method="POST">
    @foreach($cinemas as $cinema)
        Кинотеатр
        @foreach(сеансы)
             <input type="text" name="cinema[${id}][date_start][]">
             <input type="text" name="cinema[${id}][price][]">
         @endforeach
    @endforeach
    <input type="submit">
</form>

It is necessary to add the cinema_id key to the array
In order to understand how many sessions and to which cinema it is necessary to add them.
As a result, I need to get something like this:

0 => [
    'cinema_id' => 24,
    'date_start' => 0,
    'price' => 100,
],
1 => [
    'cinema_id' => 23,
    'date_start' => 0,
    'price' => 150,
],
2 => [
    'cinema_id' => 23,
    'date_start' => 0,
    'price' => 140,
]

After that, using the cycle, I will add 3 sessions, with the specified parameters.
Database structure:
movie_id | cinema_id | date_start | price
If anyone has encountered a similar problem or knows the solution to the problem, please help, thank you in advance for your help.

Answer 1

$cinemas = $request->cinema;
$cinemas = collect($cinemas)->map(function($item, $key){
    $item['cinema_id'] = $key;
    return $item;
})->toArray();
dd($cinemas);