How to save data in php to json file, as an array of objects, without keys?

Question

PHP

For example, there is a regular array like this:

$arr = [
    [
        'name' => 'test',
        'type' => 'test'
    ],
    [
        'name' => 'test',
        'type' => 'test'
    ],
    [
        'name' => 'test',
        'type' => 'test'
    ],
];

How to save such an array to a file in which the data would be in this form:

[
    {
        'name':'test',
        'type':'test'
    },
    {
        'name':'test',
        'type':'test'
    }
]

When saving using json_encode, objects are assigned keys, example

{
    '0':{
        'name':'test',
        'type':'test'
    },
   '1': {
        'name':'test',
        'type':'test'
    }
}

They are absolutely not needed, can anyone know how to get rid of them? I just met more than one project in which many json directories are connected, which contain thousands of records (that is, these keys cannot be manually deleted in any way), and all the data in them was without keys.

Answer 1

By default, that's how it works.

Answer 2

json_encode converts the object "as is".
Most likely the array has keys.
Try to create a new array in a loop.